From 2eddd64b90c8b30636f5b1b7f6c934653df277d9 Mon Sep 17 00:00:00 2001 From: bmaltais Date: Sat, 1 Apr 2023 07:14:25 -0400 Subject: [PATCH] Merge latest sd-script updates --- README.md | 12 + XTI_hijack.py | 209 ++++ gen_img_diffusers.py | 184 +++- library/model_util.py | 1781 ++++++++++++++++---------------- library/train_util.py | 32 +- networks/lora.py | 679 ++++++------ networks/merge_lora.py | 363 ++++--- tools/merge_lycoris.py | 80 ++ train_network.py | 31 +- train_textual_inversion_XTI.py | 644 ++++++++++++ 10 files changed, 2607 insertions(+), 1408 deletions(-) create mode 100644 XTI_hijack.py create mode 100644 tools/merge_lycoris.py create mode 100644 train_textual_inversion_XTI.py diff --git a/README.md b/README.md index 7a35f2b..ae913ad 100644 --- a/README.md +++ b/README.md @@ -192,8 +192,20 @@ This will store your a backup file with your current locally installed pip packa ## Change History +* 2023/04/01 (v21.4.0) + - Fix an issue that `merge_lora.py` does not work with the latest version. + - Fix an issue that `merge_lora.py` does not merge Conv2d3x3 weights. + - Fix an issue that the VRAM usage temporarily increases when loading a model in `train_network.py`. + - Fix an issue that an error occurs when loading a `.safetensors` model in `train_network.py`. [#354](https://github.com/kohya-ss/sd-scripts/issues/354) + - Support [P+](https://prompt-plus.github.io/) training. Thank you jakaline-dev! + - See [#327](https://github.com/kohya-ss/sd-scripts/pull/327) for details. + - Use `train_textual_inversion_XTI.py` for training. The usage is almost the same as `train_textual_inversion.py`. However, sample image generation during training is not supported. + - Use `gen_img_diffusers.py` for image generation (I think Web UI is not supported). Specify the embedding with `--XTI_embeddings` option. + - Reduce RAM usage at startup in `train_network.py`. [#332](https://github.com/kohya-ss/sd-scripts/pull/332) Thank you guaneec! + - Support pre-merge for LoRA in `gen_img_diffusers.py`. Specify `--network_merge` option. Note that the `--am` option of the prompt option is no longer available with this option. * 2023/04/01 (v21.3.9) - Update how setup is done on Windows by introducing a setup.bat script. This will make it easier to install/re-install on Windows if needed. Many thanks to @missionfloyd for his PR: https://github.com/bmaltais/kohya_ss/pull/496 + - Fix issue with WD14 caption script by applying a custom fix to kohya_ss code. * 2023/03/30 (v21.3.8) - Fix issue with LyCORIS version not being found: https://github.com/bmaltais/kohya_ss/issues/481 * 2023/03/29 (v21.3.7) diff --git a/XTI_hijack.py b/XTI_hijack.py new file mode 100644 index 0000000..f39cc8e --- /dev/null +++ b/XTI_hijack.py @@ -0,0 +1,209 @@ +import torch +from typing import Union, List, Optional, Dict, Any, Tuple +from diffusers.models.unet_2d_condition import UNet2DConditionOutput + +def unet_forward_XTI(self, + sample: torch.FloatTensor, + timestep: Union[torch.Tensor, float, int], + encoder_hidden_states: torch.Tensor, + class_labels: Optional[torch.Tensor] = None, + return_dict: bool = True, + ) -> Union[UNet2DConditionOutput, Tuple]: + r""" + Args: + sample (`torch.FloatTensor`): (batch, channel, height, width) noisy inputs tensor + timestep (`torch.FloatTensor` or `float` or `int`): (batch) timesteps + encoder_hidden_states (`torch.FloatTensor`): (batch, sequence_length, feature_dim) encoder hidden states + return_dict (`bool`, *optional*, defaults to `True`): + Whether or not to return a [`models.unet_2d_condition.UNet2DConditionOutput`] instead of a plain tuple. + + Returns: + [`~models.unet_2d_condition.UNet2DConditionOutput`] or `tuple`: + [`~models.unet_2d_condition.UNet2DConditionOutput`] if `return_dict` is True, otherwise a `tuple`. When + returning a tuple, the first element is the sample tensor. + """ + # By default samples have to be AT least a multiple of the overall upsampling factor. + # The overall upsampling factor is equal to 2 ** (# num of upsampling layears). + # However, the upsampling interpolation output size can be forced to fit any upsampling size + # on the fly if necessary. + default_overall_up_factor = 2**self.num_upsamplers + + # upsample size should be forwarded when sample is not a multiple of `default_overall_up_factor` + forward_upsample_size = False + upsample_size = None + + if any(s % default_overall_up_factor != 0 for s in sample.shape[-2:]): + logger.info("Forward upsample size to force interpolation output size.") + forward_upsample_size = True + + # 0. center input if necessary + if self.config.center_input_sample: + sample = 2 * sample - 1.0 + + # 1. time + timesteps = timestep + if not torch.is_tensor(timesteps): + # TODO: this requires sync between CPU and GPU. So try to pass timesteps as tensors if you can + # This would be a good case for the `match` statement (Python 3.10+) + is_mps = sample.device.type == "mps" + if isinstance(timestep, float): + dtype = torch.float32 if is_mps else torch.float64 + else: + dtype = torch.int32 if is_mps else torch.int64 + timesteps = torch.tensor([timesteps], dtype=dtype, device=sample.device) + elif len(timesteps.shape) == 0: + timesteps = timesteps[None].to(sample.device) + + # broadcast to batch dimension in a way that's compatible with ONNX/Core ML + timesteps = timesteps.expand(sample.shape[0]) + + t_emb = self.time_proj(timesteps) + + # timesteps does not contain any weights and will always return f32 tensors + # but time_embedding might actually be running in fp16. so we need to cast here. + # there might be better ways to encapsulate this. + t_emb = t_emb.to(dtype=self.dtype) + emb = self.time_embedding(t_emb) + + if self.config.num_class_embeds is not None: + if class_labels is None: + raise ValueError("class_labels should be provided when num_class_embeds > 0") + class_emb = self.class_embedding(class_labels).to(dtype=self.dtype) + emb = emb + class_emb + + # 2. pre-process + sample = self.conv_in(sample) + + # 3. down + down_block_res_samples = (sample,) + down_i = 0 + for downsample_block in self.down_blocks: + if hasattr(downsample_block, "has_cross_attention") and downsample_block.has_cross_attention: + sample, res_samples = downsample_block( + hidden_states=sample, + temb=emb, + encoder_hidden_states=encoder_hidden_states[down_i:down_i+2], + ) + down_i += 2 + else: + sample, res_samples = downsample_block(hidden_states=sample, temb=emb) + + down_block_res_samples += res_samples + + # 4. mid + sample = self.mid_block(sample, emb, encoder_hidden_states=encoder_hidden_states[6]) + + # 5. up + up_i = 7 + for i, upsample_block in enumerate(self.up_blocks): + is_final_block = i == len(self.up_blocks) - 1 + + res_samples = down_block_res_samples[-len(upsample_block.resnets) :] + down_block_res_samples = down_block_res_samples[: -len(upsample_block.resnets)] + + # if we have not reached the final block and need to forward the + # upsample size, we do it here + if not is_final_block and forward_upsample_size: + upsample_size = down_block_res_samples[-1].shape[2:] + + if hasattr(upsample_block, "has_cross_attention") and upsample_block.has_cross_attention: + sample = upsample_block( + hidden_states=sample, + temb=emb, + res_hidden_states_tuple=res_samples, + encoder_hidden_states=encoder_hidden_states[up_i:up_i+3], + upsample_size=upsample_size, + ) + up_i += 3 + else: + sample = upsample_block( + hidden_states=sample, temb=emb, res_hidden_states_tuple=res_samples, upsample_size=upsample_size + ) + # 6. post-process + sample = self.conv_norm_out(sample) + sample = self.conv_act(sample) + sample = self.conv_out(sample) + + if not return_dict: + return (sample,) + + return UNet2DConditionOutput(sample=sample) + +def downblock_forward_XTI( + self, hidden_states, temb=None, encoder_hidden_states=None, attention_mask=None, cross_attention_kwargs=None +): + output_states = () + i = 0 + + for resnet, attn in zip(self.resnets, self.attentions): + if self.training and self.gradient_checkpointing: + + def create_custom_forward(module, return_dict=None): + def custom_forward(*inputs): + if return_dict is not None: + return module(*inputs, return_dict=return_dict) + else: + return module(*inputs) + + return custom_forward + + hidden_states = torch.utils.checkpoint.checkpoint(create_custom_forward(resnet), hidden_states, temb) + hidden_states = torch.utils.checkpoint.checkpoint( + create_custom_forward(attn, return_dict=False), hidden_states, encoder_hidden_states[i] + )[0] + else: + hidden_states = resnet(hidden_states, temb) + hidden_states = attn(hidden_states, encoder_hidden_states=encoder_hidden_states[i]).sample + + output_states += (hidden_states,) + i += 1 + + if self.downsamplers is not None: + for downsampler in self.downsamplers: + hidden_states = downsampler(hidden_states) + + output_states += (hidden_states,) + + return hidden_states, output_states + +def upblock_forward_XTI( + self, + hidden_states, + res_hidden_states_tuple, + temb=None, + encoder_hidden_states=None, + upsample_size=None, +): + i = 0 + for resnet, attn in zip(self.resnets, self.attentions): + # pop res hidden states + res_hidden_states = res_hidden_states_tuple[-1] + res_hidden_states_tuple = res_hidden_states_tuple[:-1] + hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1) + + if self.training and self.gradient_checkpointing: + + def create_custom_forward(module, return_dict=None): + def custom_forward(*inputs): + if return_dict is not None: + return module(*inputs, return_dict=return_dict) + else: + return module(*inputs) + + return custom_forward + + hidden_states = torch.utils.checkpoint.checkpoint(create_custom_forward(resnet), hidden_states, temb) + hidden_states = torch.utils.checkpoint.checkpoint( + create_custom_forward(attn, return_dict=False), hidden_states, encoder_hidden_states[i] + )[0] + else: + hidden_states = resnet(hidden_states, temb) + hidden_states = attn(hidden_states, encoder_hidden_states=encoder_hidden_states[i]).sample + + i += 1 + + if self.upsamplers is not None: + for upsampler in self.upsamplers: + hidden_states = upsampler(hidden_states, upsample_size) + + return hidden_states \ No newline at end of file diff --git a/gen_img_diffusers.py b/gen_img_diffusers.py index 690d111..225de33 100644 --- a/gen_img_diffusers.py +++ b/gen_img_diffusers.py @@ -95,6 +95,8 @@ import library.train_util as train_util import tools.original_control_net as original_control_net from tools.original_control_net import ControlNetInfo +from XTI_hijack import unet_forward_XTI, downblock_forward_XTI, upblock_forward_XTI + # Tokenizer: checkpointから読み込むのではなくあらかじめ提供されているものを使う TOKENIZER_PATH = "openai/clip-vit-large-patch14" V2_STABLE_DIFFUSION_PATH = "stabilityai/stable-diffusion-2" # ここからtokenizerだけ使う @@ -491,6 +493,9 @@ class PipelineLike: # Textual Inversion self.token_replacements = {} + # XTI + self.token_replacements_XTI = {} + # CLIP guidance self.clip_guidance_scale = clip_guidance_scale self.clip_image_guidance_scale = clip_image_guidance_scale @@ -514,15 +519,26 @@ class PipelineLike: def add_token_replacement(self, target_token_id, rep_token_ids): self.token_replacements[target_token_id] = rep_token_ids - def replace_token(self, tokens): + def replace_token(self, tokens, layer=None): new_tokens = [] for token in tokens: if token in self.token_replacements: - new_tokens.extend(self.token_replacements[token]) + replacer_ = self.token_replacements[token] + if layer: + replacer = [] + for r in replacer_: + if r in self.token_replacements_XTI: + replacer.append(self.token_replacements_XTI[r][layer]) + else: + replacer = replacer_ + new_tokens.extend(replacer) else: new_tokens.append(token) return new_tokens + def add_token_replacement_XTI(self, target_token_id, rep_token_ids): + self.token_replacements_XTI[target_token_id] = rep_token_ids + def set_control_nets(self, ctrl_nets): self.control_nets = ctrl_nets @@ -744,14 +760,15 @@ class PipelineLike: " the batch size of `prompt`." ) - text_embeddings, uncond_embeddings, prompt_tokens = get_weighted_text_embeddings( - pipe=self, - prompt=prompt, - uncond_prompt=negative_prompt if do_classifier_free_guidance else None, - max_embeddings_multiples=max_embeddings_multiples, - clip_skip=self.clip_skip, - **kwargs, - ) + if not self.token_replacements_XTI: + text_embeddings, uncond_embeddings, prompt_tokens = get_weighted_text_embeddings( + pipe=self, + prompt=prompt, + uncond_prompt=negative_prompt if do_classifier_free_guidance else None, + max_embeddings_multiples=max_embeddings_multiples, + clip_skip=self.clip_skip, + **kwargs, + ) if negative_scale is not None: _, real_uncond_embeddings, _ = get_weighted_text_embeddings( @@ -763,11 +780,47 @@ class PipelineLike: **kwargs, ) - if do_classifier_free_guidance: - if negative_scale is None: - text_embeddings = torch.cat([uncond_embeddings, text_embeddings]) - else: - text_embeddings = torch.cat([uncond_embeddings, text_embeddings, real_uncond_embeddings]) + if self.token_replacements_XTI: + text_embeddings_concat = [] + for layer in [ + "IN01", + "IN02", + "IN04", + "IN05", + "IN07", + "IN08", + "MID", + "OUT03", + "OUT04", + "OUT05", + "OUT06", + "OUT07", + "OUT08", + "OUT09", + "OUT10", + "OUT11", + ]: + text_embeddings, uncond_embeddings, prompt_tokens = get_weighted_text_embeddings( + pipe=self, + prompt=prompt, + uncond_prompt=negative_prompt if do_classifier_free_guidance else None, + max_embeddings_multiples=max_embeddings_multiples, + clip_skip=self.clip_skip, + layer=layer, + **kwargs, + ) + if do_classifier_free_guidance: + if negative_scale is None: + text_embeddings_concat.append(torch.cat([uncond_embeddings, text_embeddings])) + else: + text_embeddings_concat.append(torch.cat([uncond_embeddings, text_embeddings, real_uncond_embeddings])) + text_embeddings = torch.stack(text_embeddings_concat) + else: + if do_classifier_free_guidance: + if negative_scale is None: + text_embeddings = torch.cat([uncond_embeddings, text_embeddings]) + else: + text_embeddings = torch.cat([uncond_embeddings, text_embeddings, real_uncond_embeddings]) # CLIP guidanceで使用するembeddingsを取得する if self.clip_guidance_scale > 0: @@ -1675,7 +1728,7 @@ def parse_prompt_attention(text): return res -def get_prompts_with_weights(pipe: PipelineLike, prompt: List[str], max_length: int): +def get_prompts_with_weights(pipe: PipelineLike, prompt: List[str], max_length: int, layer=None): r""" Tokenize a list of prompts and return its tokens with weights of each token. No padding, starting or ending token is included. @@ -1691,7 +1744,7 @@ def get_prompts_with_weights(pipe: PipelineLike, prompt: List[str], max_length: # tokenize and discard the starting and the ending token token = pipe.tokenizer(word).input_ids[1:-1] - token = pipe.replace_token(token) + token = pipe.replace_token(token, layer=layer) text_token += token # copy the weight by length of token @@ -1807,6 +1860,7 @@ def get_weighted_text_embeddings( skip_parsing: Optional[bool] = False, skip_weighting: Optional[bool] = False, clip_skip=None, + layer=None, **kwargs, ): r""" @@ -1837,11 +1891,11 @@ def get_weighted_text_embeddings( prompt = [prompt] if not skip_parsing: - prompt_tokens, prompt_weights = get_prompts_with_weights(pipe, prompt, max_length - 2) + prompt_tokens, prompt_weights = get_prompts_with_weights(pipe, prompt, max_length - 2, layer=layer) if uncond_prompt is not None: if isinstance(uncond_prompt, str): uncond_prompt = [uncond_prompt] - uncond_tokens, uncond_weights = get_prompts_with_weights(pipe, uncond_prompt, max_length - 2) + uncond_tokens, uncond_weights = get_prompts_with_weights(pipe, uncond_prompt, max_length - 2, layer=layer) else: prompt_tokens = [token[1:-1] for token in pipe.tokenizer(prompt, max_length=max_length, truncation=True).input_ids] prompt_weights = [[1.0] * len(token) for token in prompt_tokens] @@ -2229,13 +2283,17 @@ def main(args): if network is None: return - network.apply_to(text_encoder, unet) + if not args.network_merge: + network.apply_to(text_encoder, unet) - if args.opt_channels_last: - network.to(memory_format=torch.channels_last) - network.to(dtype).to(device) + if args.opt_channels_last: + network.to(memory_format=torch.channels_last) + network.to(dtype).to(device) + + networks.append(network) + else: + network.merge_to(text_encoder, unet, dtype, device) - networks.append(network) else: networks = [] @@ -2289,6 +2347,11 @@ def main(args): if args.diffusers_xformers: pipe.enable_xformers_memory_efficient_attention() + if args.XTI_embeddings: + diffusers.models.UNet2DConditionModel.forward = unet_forward_XTI + diffusers.models.unet_2d_blocks.CrossAttnDownBlock2D.forward = downblock_forward_XTI + diffusers.models.unet_2d_blocks.CrossAttnUpBlock2D.forward = upblock_forward_XTI + # Textual Inversionを処理する if args.textual_inversion_embeddings: token_ids_embeds = [] @@ -2335,6 +2398,71 @@ def main(args): for token_id, embed in zip(token_ids, embeds): token_embeds[token_id] = embed + if args.XTI_embeddings: + XTI_layers = [ + "IN01", + "IN02", + "IN04", + "IN05", + "IN07", + "IN08", + "MID", + "OUT03", + "OUT04", + "OUT05", + "OUT06", + "OUT07", + "OUT08", + "OUT09", + "OUT10", + "OUT11", + ] + token_ids_embeds_XTI = [] + for embeds_file in args.XTI_embeddings: + if model_util.is_safetensors(embeds_file): + from safetensors.torch import load_file + + data = load_file(embeds_file) + else: + data = torch.load(embeds_file, map_location="cpu") + if set(data.keys()) != set(XTI_layers): + raise ValueError("NOT XTI") + embeds = torch.concat(list(data.values())) + num_vectors_per_token = data["MID"].size()[0] + + token_string = os.path.splitext(os.path.basename(embeds_file))[0] + token_strings = [token_string] + [f"{token_string}{i+1}" for i in range(num_vectors_per_token - 1)] + + # add new word to tokenizer, count is num_vectors_per_token + num_added_tokens = tokenizer.add_tokens(token_strings) + assert ( + num_added_tokens == num_vectors_per_token + ), f"tokenizer has same word to token string (filename). please rename the file / 指定した名前（ファイル名）のトークンが既に存在します。ファイルをリネームしてください: {embeds_file}" + + token_ids = tokenizer.convert_tokens_to_ids(token_strings) + print(f"XTI embeddings `{token_string}` loaded. Tokens are added: {token_ids}") + + # if num_vectors_per_token > 1: + pipe.add_token_replacement(token_ids[0], token_ids) + + token_strings_XTI = [] + for layer_name in XTI_layers: + token_strings_XTI += [f"{t}_{layer_name}" for t in token_strings] + tokenizer.add_tokens(token_strings_XTI) + token_ids_XTI = tokenizer.convert_tokens_to_ids(token_strings_XTI) + token_ids_embeds_XTI.append((token_ids_XTI, embeds)) + for t in token_ids: + t_XTI_dic = {} + for i, layer_name in enumerate(XTI_layers): + t_XTI_dic[layer_name] = t + (i + 1) * num_added_tokens + pipe.add_token_replacement_XTI(t, t_XTI_dic) + + text_encoder.resize_token_embeddings(len(tokenizer)) + token_embeds = text_encoder.get_input_embeddings().weight.data + for token_ids, embeds in token_ids_embeds_XTI: + for token_id, embed in zip(token_ids, embeds): + token_embeds[token_id] = embed + # promptを取得する if args.from_file is not None: print(f"reading prompts from {args.from_file}") @@ -2983,6 +3111,7 @@ def setup_parser() -> argparse.ArgumentParser: "--network_args", type=str, default=None, nargs="*", help="additional argmuments for network (key=value) / ネットワークへの追加の引数" ) parser.add_argument("--network_show_meta", action="store_true", help="show metadata of network model / ネットワークモデルのメタデータを表示する") + parser.add_argument("--network_merge", action="store_true", help="merge network weights to original model / ネットワークの重みをマージする") parser.add_argument( "--textual_inversion_embeddings", type=str, @@ -2990,6 +3119,13 @@ def setup_parser() -> argparse.ArgumentParser: nargs="*", help="Embeddings files of Textual Inversion / Textual Inversionのembeddings", ) + parser.add_argument( + "--XTI_embeddings", + type=str, + default=None, + nargs="*", + help="Embeddings files of Extended Textual Inversion / Extended Textual Inversionのembeddings", + ) parser.add_argument("--clip_skip", type=int, default=None, help="layer number from bottom to use in CLIP / CLIPの後ろからn層目の出力を使う") parser.add_argument( "--max_embeddings_multiples", diff --git a/library/model_util.py b/library/model_util.py index 3d8e753..35b0b6a 100644 --- a/library/model_util.py +++ b/library/model_util.py @@ -45,596 +45,574 @@ DIFFUSERS_REF_MODEL_ID_V2 = "stabilityai/stable-diffusion-2-1" def shave_segments(path, n_shave_prefix_segments=1): - """ - Removes segments. Positive values shave the first segments, negative shave the last segments. - """ - if n_shave_prefix_segments >= 0: - return ".".join(path.split(".")[n_shave_prefix_segments:]) - else: - return ".".join(path.split(".")[:n_shave_prefix_segments]) + """ + Removes segments. Positive values shave the first segments, negative shave the last segments. + """ + if n_shave_prefix_segments >= 0: + return ".".join(path.split(".")[n_shave_prefix_segments:]) + else: + return ".".join(path.split(".")[:n_shave_prefix_segments]) def renew_resnet_paths(old_list, n_shave_prefix_segments=0): - """ - Updates paths inside resnets to the new naming scheme (local renaming) - """ - mapping = [] - for old_item in old_list: - new_item = old_item.replace("in_layers.0", "norm1") - new_item = new_item.replace("in_layers.2", "conv1") + """ + Updates paths inside resnets to the new naming scheme (local renaming) + """ + mapping = [] + for old_item in old_list: + new_item = old_item.replace("in_layers.0", "norm1") + new_item = new_item.replace("in_layers.2", "conv1") - new_item = new_item.replace("out_layers.0", "norm2") - new_item = new_item.replace("out_layers.3", "conv2") + new_item = new_item.replace("out_layers.0", "norm2") + new_item = new_item.replace("out_layers.3", "conv2") - new_item = new_item.replace("emb_layers.1", "time_emb_proj") - new_item = new_item.replace("skip_connection", "conv_shortcut") + new_item = new_item.replace("emb_layers.1", "time_emb_proj") + new_item = new_item.replace("skip_connection", "conv_shortcut") - new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) + new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) - mapping.append({"old": old_item, "new": new_item}) + mapping.append({"old": old_item, "new": new_item}) - return mapping + return mapping def renew_vae_resnet_paths(old_list, n_shave_prefix_segments=0): - """ - Updates paths inside resnets to the new naming scheme (local renaming) - """ - mapping = [] - for old_item in old_list: - new_item = old_item + """ + Updates paths inside resnets to the new naming scheme (local renaming) + """ + mapping = [] + for old_item in old_list: + new_item = old_item - new_item = new_item.replace("nin_shortcut", "conv_shortcut") - new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) + new_item = new_item.replace("nin_shortcut", "conv_shortcut") + new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) - mapping.append({"old": old_item, "new": new_item}) + mapping.append({"old": old_item, "new": new_item}) - return mapping + return mapping def renew_attention_paths(old_list, n_shave_prefix_segments=0): - """ - Updates paths inside attentions to the new naming scheme (local renaming) - """ - mapping = [] - for old_item in old_list: - new_item = old_item + """ + Updates paths inside attentions to the new naming scheme (local renaming) + """ + mapping = [] + for old_item in old_list: + new_item = old_item - # new_item = new_item.replace('norm.weight', 'group_norm.weight') - # new_item = new_item.replace('norm.bias', 'group_norm.bias') + # new_item = new_item.replace('norm.weight', 'group_norm.weight') + # new_item = new_item.replace('norm.bias', 'group_norm.bias') - # new_item = new_item.replace('proj_out.weight', 'proj_attn.weight') - # new_item = new_item.replace('proj_out.bias', 'proj_attn.bias') + # new_item = new_item.replace('proj_out.weight', 'proj_attn.weight') + # new_item = new_item.replace('proj_out.bias', 'proj_attn.bias') - # new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) + # new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) - mapping.append({"old": old_item, "new": new_item}) + mapping.append({"old": old_item, "new": new_item}) - return mapping + return mapping def renew_vae_attention_paths(old_list, n_shave_prefix_segments=0): - """ - Updates paths inside attentions to the new naming scheme (local renaming) - """ - mapping = [] - for old_item in old_list: - new_item = old_item + """ + Updates paths inside attentions to the new naming scheme (local renaming) + """ + mapping = [] + for old_item in old_list: + new_item = old_item - new_item = new_item.replace("norm.weight", "group_norm.weight") - new_item = new_item.replace("norm.bias", "group_norm.bias") + new_item = new_item.replace("norm.weight", "group_norm.weight") + new_item = new_item.replace("norm.bias", "group_norm.bias") - new_item = new_item.replace("q.weight", "query.weight") - new_item = new_item.replace("q.bias", "query.bias") + new_item = new_item.replace("q.weight", "query.weight") + new_item = new_item.replace("q.bias", "query.bias") - new_item = new_item.replace("k.weight", "key.weight") - new_item = new_item.replace("k.bias", "key.bias") + new_item = new_item.replace("k.weight", "key.weight") + new_item = new_item.replace("k.bias", "key.bias") - new_item = new_item.replace("v.weight", "value.weight") - new_item = new_item.replace("v.bias", "value.bias") + new_item = new_item.replace("v.weight", "value.weight") + new_item = new_item.replace("v.bias", "value.bias") - new_item = new_item.replace("proj_out.weight", "proj_attn.weight") - new_item = new_item.replace("proj_out.bias", "proj_attn.bias") + new_item = new_item.replace("proj_out.weight", "proj_attn.weight") + new_item = new_item.replace("proj_out.bias", "proj_attn.bias") - new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) + new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments) - mapping.append({"old": old_item, "new": new_item}) + mapping.append({"old": old_item, "new": new_item}) - return mapping + return mapping def assign_to_checkpoint( paths, checkpoint, old_checkpoint, attention_paths_to_split=None, additional_replacements=None, config=None ): - """ - This does the final conversion step: take locally converted weights and apply a global renaming - to them. It splits attention layers, and takes into account additional replacements - that may arise. + """ + This does the final conversion step: take locally converted weights and apply a global renaming + to them. It splits attention layers, and takes into account additional replacements + that may arise. - Assigns the weights to the new checkpoint. - """ - assert isinstance(paths, list), "Paths should be a list of dicts containing 'old' and 'new' keys." + Assigns the weights to the new checkpoint. + """ + assert isinstance(paths, list), "Paths should be a list of dicts containing 'old' and 'new' keys." - # Splits the attention layers into three variables. - if attention_paths_to_split is not None: - for path, path_map in attention_paths_to_split.items(): - old_tensor = old_checkpoint[path] - channels = old_tensor.shape[0] // 3 + # Splits the attention layers into three variables. + if attention_paths_to_split is not None: + for path, path_map in attention_paths_to_split.items(): + old_tensor = old_checkpoint[path] + channels = old_tensor.shape[0] // 3 - target_shape = (-1, channels) if len(old_tensor.shape) == 3 else (-1) + target_shape = (-1, channels) if len(old_tensor.shape) == 3 else (-1) - num_heads = old_tensor.shape[0] // config["num_head_channels"] // 3 + num_heads = old_tensor.shape[0] // config["num_head_channels"] // 3 - old_tensor = old_tensor.reshape((num_heads, 3 * channels // num_heads) + old_tensor.shape[1:]) - query, key, value = old_tensor.split(channels // num_heads, dim=1) + old_tensor = old_tensor.reshape((num_heads, 3 * channels // num_heads) + old_tensor.shape[1:]) + query, key, value = old_tensor.split(channels // num_heads, dim=1) - checkpoint[path_map["query"]] = query.reshape(target_shape) - checkpoint[path_map["key"]] = key.reshape(target_shape) - checkpoint[path_map["value"]] = value.reshape(target_shape) + checkpoint[path_map["query"]] = query.reshape(target_shape) + checkpoint[path_map["key"]] = key.reshape(target_shape) + checkpoint[path_map["value"]] = value.reshape(target_shape) - for path in paths: - new_path = path["new"] + for path in paths: + new_path = path["new"] - # These have already been assigned - if attention_paths_to_split is not None and new_path in attention_paths_to_split: - continue + # These have already been assigned + if attention_paths_to_split is not None and new_path in attention_paths_to_split: + continue - # Global renaming happens here - new_path = new_path.replace("middle_block.0", "mid_block.resnets.0") - new_path = new_path.replace("middle_block.1", "mid_block.attentions.0") - new_path = new_path.replace("middle_block.2", "mid_block.resnets.1") + # Global renaming happens here + new_path = new_path.replace("middle_block.0", "mid_block.resnets.0") + new_path = new_path.replace("middle_block.1", "mid_block.attentions.0") + new_path = new_path.replace("middle_block.2", "mid_block.resnets.1") - if additional_replacements is not None: - for replacement in additional_replacements: - new_path = new_path.replace(replacement["old"], replacement["new"]) + if additional_replacements is not None: + for replacement in additional_replacements: + new_path = new_path.replace(replacement["old"], replacement["new"]) - # proj_attn.weight has to be converted from conv 1D to linear - if "proj_attn.weight" in new_path: - checkpoint[new_path] = old_checkpoint[path["old"]][:, :, 0] - else: - checkpoint[new_path] = old_checkpoint[path["old"]] + # proj_attn.weight has to be converted from conv 1D to linear + if "proj_attn.weight" in new_path: + checkpoint[new_path] = old_checkpoint[path["old"]][:, :, 0] + else: + checkpoint[new_path] = old_checkpoint[path["old"]] def conv_attn_to_linear(checkpoint): - keys = list(checkpoint.keys()) - attn_keys = ["query.weight", "key.weight", "value.weight"] - for key in keys: - if ".".join(key.split(".")[-2:]) in attn_keys: - if checkpoint[key].ndim > 2: - checkpoint[key] = checkpoint[key][:, :, 0, 0] - elif "proj_attn.weight" in key: - if checkpoint[key].ndim > 2: - checkpoint[key] = checkpoint[key][:, :, 0] + keys = list(checkpoint.keys()) + attn_keys = ["query.weight", "key.weight", "value.weight"] + for key in keys: + if ".".join(key.split(".")[-2:]) in attn_keys: + if checkpoint[key].ndim > 2: + checkpoint[key] = checkpoint[key][:, :, 0, 0] + elif "proj_attn.weight" in key: + if checkpoint[key].ndim > 2: + checkpoint[key] = checkpoint[key][:, :, 0] def linear_transformer_to_conv(checkpoint): - keys = list(checkpoint.keys()) - tf_keys = ["proj_in.weight", "proj_out.weight"] - for key in keys: - if ".".join(key.split(".")[-2:]) in tf_keys: - if checkpoint[key].ndim == 2: - checkpoint[key] = checkpoint[key].unsqueeze(2).unsqueeze(2) + keys = list(checkpoint.keys()) + tf_keys = ["proj_in.weight", "proj_out.weight"] + for key in keys: + if ".".join(key.split(".")[-2:]) in tf_keys: + if checkpoint[key].ndim == 2: + checkpoint[key] = checkpoint[key].unsqueeze(2).unsqueeze(2) def convert_ldm_unet_checkpoint(v2, checkpoint, config): - """ - Takes a state dict and a config, and returns a converted checkpoint. - """ + """ + Takes a state dict and a config, and returns a converted checkpoint. + """ - # extract state_dict for UNet - unet_state_dict = {} - unet_key = "model.diffusion_model." - keys = list(checkpoint.keys()) - for key in keys: - if key.startswith(unet_key): - unet_state_dict[key.replace(unet_key, "")] = checkpoint.pop(key) + # extract state_dict for UNet + unet_state_dict = {} + unet_key = "model.diffusion_model." + keys = list(checkpoint.keys()) + for key in keys: + if key.startswith(unet_key): + unet_state_dict[key.replace(unet_key, "")] = checkpoint.pop(key) - new_checkpoint = {} + new_checkpoint = {} - new_checkpoint["time_embedding.linear_1.weight"] = unet_state_dict["time_embed.0.weight"] - new_checkpoint["time_embedding.linear_1.bias"] = unet_state_dict["time_embed.0.bias"] - new_checkpoint["time_embedding.linear_2.weight"] = unet_state_dict["time_embed.2.weight"] - new_checkpoint["time_embedding.linear_2.bias"] = unet_state_dict["time_embed.2.bias"] + new_checkpoint["time_embedding.linear_1.weight"] = unet_state_dict["time_embed.0.weight"] + new_checkpoint["time_embedding.linear_1.bias"] = unet_state_dict["time_embed.0.bias"] + new_checkpoint["time_embedding.linear_2.weight"] = unet_state_dict["time_embed.2.weight"] + new_checkpoint["time_embedding.linear_2.bias"] = unet_state_dict["time_embed.2.bias"] - new_checkpoint["conv_in.weight"] = unet_state_dict["input_blocks.0.0.weight"] - new_checkpoint["conv_in.bias"] = unet_state_dict["input_blocks.0.0.bias"] + new_checkpoint["conv_in.weight"] = unet_state_dict["input_blocks.0.0.weight"] + new_checkpoint["conv_in.bias"] = unet_state_dict["input_blocks.0.0.bias"] - new_checkpoint["conv_norm_out.weight"] = unet_state_dict["out.0.weight"] - new_checkpoint["conv_norm_out.bias"] = unet_state_dict["out.0.bias"] - new_checkpoint["conv_out.weight"] = unet_state_dict["out.2.weight"] - new_checkpoint["conv_out.bias"] = unet_state_dict["out.2.bias"] + new_checkpoint["conv_norm_out.weight"] = unet_state_dict["out.0.weight"] + new_checkpoint["conv_norm_out.bias"] = unet_state_dict["out.0.bias"] + new_checkpoint["conv_out.weight"] = unet_state_dict["out.2.weight"] + new_checkpoint["conv_out.bias"] = unet_state_dict["out.2.bias"] - # Retrieves the keys for the input blocks only - num_input_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "input_blocks" in layer}) - input_blocks = { - layer_id: [key for key in unet_state_dict if f"input_blocks.{layer_id}." in key] - for layer_id in range(num_input_blocks) - } + # Retrieves the keys for the input blocks only + num_input_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "input_blocks" in layer}) + input_blocks = { + layer_id: [key for key in unet_state_dict if f"input_blocks.{layer_id}." in key] for layer_id in range(num_input_blocks) + } - # Retrieves the keys for the middle blocks only - num_middle_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "middle_block" in layer}) - middle_blocks = { - layer_id: [key for key in unet_state_dict if f"middle_block.{layer_id}." in key] - for layer_id in range(num_middle_blocks) - } + # Retrieves the keys for the middle blocks only + num_middle_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "middle_block" in layer}) + middle_blocks = { + layer_id: [key for key in unet_state_dict if f"middle_block.{layer_id}." in key] for layer_id in range(num_middle_blocks) + } - # Retrieves the keys for the output blocks only - num_output_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "output_blocks" in layer}) - output_blocks = { - layer_id: [key for key in unet_state_dict if f"output_blocks.{layer_id}." in key] - for layer_id in range(num_output_blocks) - } + # Retrieves the keys for the output blocks only + num_output_blocks = len({".".join(layer.split(".")[:2]) for layer in unet_state_dict if "output_blocks" in layer}) + output_blocks = { + layer_id: [key for key in unet_state_dict if f"output_blocks.{layer_id}." in key] for layer_id in range(num_output_blocks) + } - for i in range(1, num_input_blocks): - block_id = (i - 1) // (config["layers_per_block"] + 1) - layer_in_block_id = (i - 1) % (config["layers_per_block"] + 1) + for i in range(1, num_input_blocks): + block_id = (i - 1) // (config["layers_per_block"] + 1) + layer_in_block_id = (i - 1) % (config["layers_per_block"] + 1) - resnets = [ - key for key in input_blocks[i] if f"input_blocks.{i}.0" in key and f"input_blocks.{i}.0.op" not in key - ] - attentions = [key for key in input_blocks[i] if f"input_blocks.{i}.1" in key] + resnets = [key for key in input_blocks[i] if f"input_blocks.{i}.0" in key and f"input_blocks.{i}.0.op" not in key] + attentions = [key for key in input_blocks[i] if f"input_blocks.{i}.1" in key] - if f"input_blocks.{i}.0.op.weight" in unet_state_dict: - new_checkpoint[f"down_blocks.{block_id}.downsamplers.0.conv.weight"] = unet_state_dict.pop( - f"input_blocks.{i}.0.op.weight" - ) - new_checkpoint[f"down_blocks.{block_id}.downsamplers.0.conv.bias"] = unet_state_dict.pop( - f"input_blocks.{i}.0.op.bias" - ) + if f"input_blocks.{i}.0.op.weight" in unet_state_dict: + new_checkpoint[f"down_blocks.{block_id}.downsamplers.0.conv.weight"] = unet_state_dict.pop( + f"input_blocks.{i}.0.op.weight" + ) + new_checkpoint[f"down_blocks.{block_id}.downsamplers.0.conv.bias"] = unet_state_dict.pop(f"input_blocks.{i}.0.op.bias") - paths = renew_resnet_paths(resnets) - meta_path = {"old": f"input_blocks.{i}.0", "new": f"down_blocks.{block_id}.resnets.{layer_in_block_id}"} - assign_to_checkpoint( - paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config - ) + paths = renew_resnet_paths(resnets) + meta_path = {"old": f"input_blocks.{i}.0", "new": f"down_blocks.{block_id}.resnets.{layer_in_block_id}"} + assign_to_checkpoint(paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config) - if len(attentions): - paths = renew_attention_paths(attentions) - meta_path = {"old": f"input_blocks.{i}.1", "new": f"down_blocks.{block_id}.attentions.{layer_in_block_id}"} - assign_to_checkpoint( - paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config - ) + if len(attentions): + paths = renew_attention_paths(attentions) + meta_path = {"old": f"input_blocks.{i}.1", "new": f"down_blocks.{block_id}.attentions.{layer_in_block_id}"} + assign_to_checkpoint(paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config) - resnet_0 = middle_blocks[0] - attentions = middle_blocks[1] - resnet_1 = middle_blocks[2] + resnet_0 = middle_blocks[0] + attentions = middle_blocks[1] + resnet_1 = middle_blocks[2] - resnet_0_paths = renew_resnet_paths(resnet_0) - assign_to_checkpoint(resnet_0_paths, new_checkpoint, unet_state_dict, config=config) + resnet_0_paths = renew_resnet_paths(resnet_0) + assign_to_checkpoint(resnet_0_paths, new_checkpoint, unet_state_dict, config=config) - resnet_1_paths = renew_resnet_paths(resnet_1) - assign_to_checkpoint(resnet_1_paths, new_checkpoint, unet_state_dict, config=config) + resnet_1_paths = renew_resnet_paths(resnet_1) + assign_to_checkpoint(resnet_1_paths, new_checkpoint, unet_state_dict, config=config) - attentions_paths = renew_attention_paths(attentions) - meta_path = {"old": "middle_block.1", "new": "mid_block.attentions.0"} - assign_to_checkpoint( - attentions_paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config - ) + attentions_paths = renew_attention_paths(attentions) + meta_path = {"old": "middle_block.1", "new": "mid_block.attentions.0"} + assign_to_checkpoint(attentions_paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config) - for i in range(num_output_blocks): - block_id = i // (config["layers_per_block"] + 1) - layer_in_block_id = i % (config["layers_per_block"] + 1) - output_block_layers = [shave_segments(name, 2) for name in output_blocks[i]] - output_block_list = {} + for i in range(num_output_blocks): + block_id = i // (config["layers_per_block"] + 1) + layer_in_block_id = i % (config["layers_per_block"] + 1) + output_block_layers = [shave_segments(name, 2) for name in output_blocks[i]] + output_block_list = {} - for layer in output_block_layers: - layer_id, layer_name = layer.split(".")[0], shave_segments(layer, 1) - if layer_id in output_block_list: - output_block_list[layer_id].append(layer_name) - else: - output_block_list[layer_id] = [layer_name] + for layer in output_block_layers: + layer_id, layer_name = layer.split(".")[0], shave_segments(layer, 1) + if layer_id in output_block_list: + output_block_list[layer_id].append(layer_name) + else: + output_block_list[layer_id] = [layer_name] - if len(output_block_list) > 1: - resnets = [key for key in output_blocks[i] if f"output_blocks.{i}.0" in key] - attentions = [key for key in output_blocks[i] if f"output_blocks.{i}.1" in key] + if len(output_block_list) > 1: + resnets = [key for key in output_blocks[i] if f"output_blocks.{i}.0" in key] + attentions = [key for key in output_blocks[i] if f"output_blocks.{i}.1" in key] - resnet_0_paths = renew_resnet_paths(resnets) - paths = renew_resnet_paths(resnets) + resnet_0_paths = renew_resnet_paths(resnets) + paths = renew_resnet_paths(resnets) - meta_path = {"old": f"output_blocks.{i}.0", "new": f"up_blocks.{block_id}.resnets.{layer_in_block_id}"} - assign_to_checkpoint( - paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config - ) + meta_path = {"old": f"output_blocks.{i}.0", "new": f"up_blocks.{block_id}.resnets.{layer_in_block_id}"} + assign_to_checkpoint(paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config) - # オリジナル： - # if ["conv.weight", "conv.bias"] in output_block_list.values(): - # index = list(output_block_list.values()).index(["conv.weight", "conv.bias"]) + # オリジナル： + # if ["conv.weight", "conv.bias"] in output_block_list.values(): + # index = list(output_block_list.values()).index(["conv.weight", "conv.bias"]) - # biasとweightの順番に依存しないようにする：もっといいやり方がありそうだが - for l in output_block_list.values(): - l.sort() + # biasとweightの順番に依存しないようにする：もっといいやり方がありそうだが + for l in output_block_list.values(): + l.sort() - if ["conv.bias", "conv.weight"] in output_block_list.values(): - index = list(output_block_list.values()).index(["conv.bias", "conv.weight"]) - new_checkpoint[f"up_blocks.{block_id}.upsamplers.0.conv.bias"] = unet_state_dict[ - f"output_blocks.{i}.{index}.conv.bias" - ] - new_checkpoint[f"up_blocks.{block_id}.upsamplers.0.conv.weight"] = unet_state_dict[ - f"output_blocks.{i}.{index}.conv.weight" - ] + if ["conv.bias", "conv.weight"] in output_block_list.values(): + index = list(output_block_list.values()).index(["conv.bias", "conv.weight"]) + new_checkpoint[f"up_blocks.{block_id}.upsamplers.0.conv.bias"] = unet_state_dict[ + f"output_blocks.{i}.{index}.conv.bias" + ] + new_checkpoint[f"up_blocks.{block_id}.upsamplers.0.conv.weight"] = unet_state_dict[ + f"output_blocks.{i}.{index}.conv.weight" + ] - # Clear attentions as they have been attributed above. - if len(attentions) == 2: - attentions = [] + # Clear attentions as they have been attributed above. + if len(attentions) == 2: + attentions = [] - if len(attentions): - paths = renew_attention_paths(attentions) - meta_path = { - "old": f"output_blocks.{i}.1", - "new": f"up_blocks.{block_id}.attentions.{layer_in_block_id}", - } - assign_to_checkpoint( - paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config - ) - else: - resnet_0_paths = renew_resnet_paths(output_block_layers, n_shave_prefix_segments=1) - for path in resnet_0_paths: - old_path = ".".join(["output_blocks", str(i), path["old"]]) - new_path = ".".join(["up_blocks", str(block_id), "resnets", str(layer_in_block_id), path["new"]]) + if len(attentions): + paths = renew_attention_paths(attentions) + meta_path = { + "old": f"output_blocks.{i}.1", + "new": f"up_blocks.{block_id}.attentions.{layer_in_block_id}", + } + assign_to_checkpoint(paths, new_checkpoint, unet_state_dict, additional_replacements=[meta_path], config=config) + else: + resnet_0_paths = renew_resnet_paths(output_block_layers, n_shave_prefix_segments=1) + for path in resnet_0_paths: + old_path = ".".join(["output_blocks", str(i), path["old"]]) + new_path = ".".join(["up_blocks", str(block_id), "resnets", str(layer_in_block_id), path["new"]]) - new_checkpoint[new_path] = unet_state_dict[old_path] + new_checkpoint[new_path] = unet_state_dict[old_path] - # SDのv2では1*1のconv2dがlinearに変わっているので、linear->convに変換する - if v2: - linear_transformer_to_conv(new_checkpoint) + # SDのv2では1*1のconv2dがlinearに変わっているので、linear->convに変換する + if v2: + linear_transformer_to_conv(new_checkpoint) - return new_checkpoint + return new_checkpoint def convert_ldm_vae_checkpoint(checkpoint, config): - # extract state dict for VAE - vae_state_dict = {} - vae_key = "first_stage_model." - keys = list(checkpoint.keys()) - for key in keys: - if key.startswith(vae_key): - vae_state_dict[key.replace(vae_key, "")] = checkpoint.get(key) - # if len(vae_state_dict) == 0: - # # 渡されたcheckpointは.ckptから読み込んだcheckpointではなくvaeのstate_dict - # vae_state_dict = checkpoint + # extract state dict for VAE + vae_state_dict = {} + vae_key = "first_stage_model." + keys = list(checkpoint.keys()) + for key in keys: + if key.startswith(vae_key): + vae_state_dict[key.replace(vae_key, "")] = checkpoint.get(key) + # if len(vae_state_dict) == 0: + # # 渡されたcheckpointは.ckptから読み込んだcheckpointではなくvaeのstate_dict + # vae_state_dict = checkpoint - new_checkpoint = {} + new_checkpoint = {} - new_checkpoint["encoder.conv_in.weight"] = vae_state_dict["encoder.conv_in.weight"] - new_checkpoint["encoder.conv_in.bias"] = vae_state_dict["encoder.conv_in.bias"] - new_checkpoint["encoder.conv_out.weight"] = vae_state_dict["encoder.conv_out.weight"] - new_checkpoint["encoder.conv_out.bias"] = vae_state_dict["encoder.conv_out.bias"] - new_checkpoint["encoder.conv_norm_out.weight"] = vae_state_dict["encoder.norm_out.weight"] - new_checkpoint["encoder.conv_norm_out.bias"] = vae_state_dict["encoder.norm_out.bias"] + new_checkpoint["encoder.conv_in.weight"] = vae_state_dict["encoder.conv_in.weight"] + new_checkpoint["encoder.conv_in.bias"] = vae_state_dict["encoder.conv_in.bias"] + new_checkpoint["encoder.conv_out.weight"] = vae_state_dict["encoder.conv_out.weight"] + new_checkpoint["encoder.conv_out.bias"] = vae_state_dict["encoder.conv_out.bias"] + new_checkpoint["encoder.conv_norm_out.weight"] = vae_state_dict["encoder.norm_out.weight"] + new_checkpoint["encoder.conv_norm_out.bias"] = vae_state_dict["encoder.norm_out.bias"] - new_checkpoint["decoder.conv_in.weight"] = vae_state_dict["decoder.conv_in.weight"] - new_checkpoint["decoder.conv_in.bias"] = vae_state_dict["decoder.conv_in.bias"] - new_checkpoint["decoder.conv_out.weight"] = vae_state_dict["decoder.conv_out.weight"] - new_checkpoint["decoder.conv_out.bias"] = vae_state_dict["decoder.conv_out.bias"] - new_checkpoint["decoder.conv_norm_out.weight"] = vae_state_dict["decoder.norm_out.weight"] - new_checkpoint["decoder.conv_norm_out.bias"] = vae_state_dict["decoder.norm_out.bias"] + new_checkpoint["decoder.conv_in.weight"] = vae_state_dict["decoder.conv_in.weight"] + new_checkpoint["decoder.conv_in.bias"] = vae_state_dict["decoder.conv_in.bias"] + new_checkpoint["decoder.conv_out.weight"] = vae_state_dict["decoder.conv_out.weight"] + new_checkpoint["decoder.conv_out.bias"] = vae_state_dict["decoder.conv_out.bias"] + new_checkpoint["decoder.conv_norm_out.weight"] = vae_state_dict["decoder.norm_out.weight"] + new_checkpoint["decoder.conv_norm_out.bias"] = vae_state_dict["decoder.norm_out.bias"] - new_checkpoint["quant_conv.weight"] = vae_state_dict["quant_conv.weight"] - new_checkpoint["quant_conv.bias"] = vae_state_dict["quant_conv.bias"] - new_checkpoint["post_quant_conv.weight"] = vae_state_dict["post_quant_conv.weight"] - new_checkpoint["post_quant_conv.bias"] = vae_state_dict["post_quant_conv.bias"] + new_checkpoint["quant_conv.weight"] = vae_state_dict["quant_conv.weight"] + new_checkpoint["quant_conv.bias"] = vae_state_dict["quant_conv.bias"] + new_checkpoint["post_quant_conv.weight"] = vae_state_dict["post_quant_conv.weight"] + new_checkpoint["post_quant_conv.bias"] = vae_state_dict["post_quant_conv.bias"] - # Retrieves the keys for the encoder down blocks only - num_down_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "encoder.down" in layer}) - down_blocks = { - layer_id: [key for key in vae_state_dict if f"down.{layer_id}" in key] for layer_id in range(num_down_blocks) - } + # Retrieves the keys for the encoder down blocks only + num_down_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "encoder.down" in layer}) + down_blocks = {layer_id: [key for key in vae_state_dict if f"down.{layer_id}" in key] for layer_id in range(num_down_blocks)} - # Retrieves the keys for the decoder up blocks only - num_up_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "decoder.up" in layer}) - up_blocks = { - layer_id: [key for key in vae_state_dict if f"up.{layer_id}" in key] for layer_id in range(num_up_blocks) - } + # Retrieves the keys for the decoder up blocks only + num_up_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "decoder.up" in layer}) + up_blocks = {layer_id: [key for key in vae_state_dict if f"up.{layer_id}" in key] for layer_id in range(num_up_blocks)} - for i in range(num_down_blocks): - resnets = [key for key in down_blocks[i] if f"down.{i}" in key and f"down.{i}.downsample" not in key] + for i in range(num_down_blocks): + resnets = [key for key in down_blocks[i] if f"down.{i}" in key and f"down.{i}.downsample" not in key] - if f"encoder.down.{i}.downsample.conv.weight" in vae_state_dict: - new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.weight"] = vae_state_dict.pop( - f"encoder.down.{i}.downsample.conv.weight" - ) - new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.bias"] = vae_state_dict.pop( - f"encoder.down.{i}.downsample.conv.bias" - ) + if f"encoder.down.{i}.downsample.conv.weight" in vae_state_dict: + new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.weight"] = vae_state_dict.pop( + f"encoder.down.{i}.downsample.conv.weight" + ) + new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.bias"] = vae_state_dict.pop( + f"encoder.down.{i}.downsample.conv.bias" + ) - paths = renew_vae_resnet_paths(resnets) - meta_path = {"old": f"down.{i}.block", "new": f"down_blocks.{i}.resnets"} + paths = renew_vae_resnet_paths(resnets) + meta_path = {"old": f"down.{i}.block", "new": f"down_blocks.{i}.resnets"} + assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) + + mid_resnets = [key for key in vae_state_dict if "encoder.mid.block" in key] + num_mid_res_blocks = 2 + for i in range(1, num_mid_res_blocks + 1): + resnets = [key for key in mid_resnets if f"encoder.mid.block_{i}" in key] + + paths = renew_vae_resnet_paths(resnets) + meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"} + assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) + + mid_attentions = [key for key in vae_state_dict if "encoder.mid.attn" in key] + paths = renew_vae_attention_paths(mid_attentions) + meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"} assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) + conv_attn_to_linear(new_checkpoint) - mid_resnets = [key for key in vae_state_dict if "encoder.mid.block" in key] - num_mid_res_blocks = 2 - for i in range(1, num_mid_res_blocks + 1): - resnets = [key for key in mid_resnets if f"encoder.mid.block_{i}" in key] + for i in range(num_up_blocks): + block_id = num_up_blocks - 1 - i + resnets = [key for key in up_blocks[block_id] if f"up.{block_id}" in key and f"up.{block_id}.upsample" not in key] - paths = renew_vae_resnet_paths(resnets) - meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"} + if f"decoder.up.{block_id}.upsample.conv.weight" in vae_state_dict: + new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.weight"] = vae_state_dict[ + f"decoder.up.{block_id}.upsample.conv.weight" + ] + new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.bias"] = vae_state_dict[ + f"decoder.up.{block_id}.upsample.conv.bias" + ] + + paths = renew_vae_resnet_paths(resnets) + meta_path = {"old": f"up.{block_id}.block", "new": f"up_blocks.{i}.resnets"} + assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) + + mid_resnets = [key for key in vae_state_dict if "decoder.mid.block" in key] + num_mid_res_blocks = 2 + for i in range(1, num_mid_res_blocks + 1): + resnets = [key for key in mid_resnets if f"decoder.mid.block_{i}" in key] + + paths = renew_vae_resnet_paths(resnets) + meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"} + assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) + + mid_attentions = [key for key in vae_state_dict if "decoder.mid.attn" in key] + paths = renew_vae_attention_paths(mid_attentions) + meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"} assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) - - mid_attentions = [key for key in vae_state_dict if "encoder.mid.attn" in key] - paths = renew_vae_attention_paths(mid_attentions) - meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"} - assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) - conv_attn_to_linear(new_checkpoint) - - for i in range(num_up_blocks): - block_id = num_up_blocks - 1 - i - resnets = [ - key for key in up_blocks[block_id] if f"up.{block_id}" in key and f"up.{block_id}.upsample" not in key - ] - - if f"decoder.up.{block_id}.upsample.conv.weight" in vae_state_dict: - new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.weight"] = vae_state_dict[ - f"decoder.up.{block_id}.upsample.conv.weight" - ] - new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.bias"] = vae_state_dict[ - f"decoder.up.{block_id}.upsample.conv.bias" - ] - - paths = renew_vae_resnet_paths(resnets) - meta_path = {"old": f"up.{block_id}.block", "new": f"up_blocks.{i}.resnets"} - assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) - - mid_resnets = [key for key in vae_state_dict if "decoder.mid.block" in key] - num_mid_res_blocks = 2 - for i in range(1, num_mid_res_blocks + 1): - resnets = [key for key in mid_resnets if f"decoder.mid.block_{i}" in key] - - paths = renew_vae_resnet_paths(resnets) - meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"} - assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) - - mid_attentions = [key for key in vae_state_dict if "decoder.mid.attn" in key] - paths = renew_vae_attention_paths(mid_attentions) - meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"} - assign_to_checkpoint(paths, new_checkpoint, vae_state_dict, additional_replacements=[meta_path], config=config) - conv_attn_to_linear(new_checkpoint) - return new_checkpoint + conv_attn_to_linear(new_checkpoint) + return new_checkpoint def create_unet_diffusers_config(v2): - """ - Creates a config for the diffusers based on the config of the LDM model. - """ - # unet_params = original_config.model.params.unet_config.params + """ + Creates a config for the diffusers based on the config of the LDM model. + """ + # unet_params = original_config.model.params.unet_config.params - block_out_channels = [UNET_PARAMS_MODEL_CHANNELS * mult for mult in UNET_PARAMS_CHANNEL_MULT] + block_out_channels = [UNET_PARAMS_MODEL_CHANNELS * mult for mult in UNET_PARAMS_CHANNEL_MULT] - down_block_types = [] - resolution = 1 - for i in range(len(block_out_channels)): - block_type = "CrossAttnDownBlock2D" if resolution in UNET_PARAMS_ATTENTION_RESOLUTIONS else "DownBlock2D" - down_block_types.append(block_type) - if i != len(block_out_channels) - 1: - resolution *= 2 + down_block_types = [] + resolution = 1 + for i in range(len(block_out_channels)): + block_type = "CrossAttnDownBlock2D" if resolution in UNET_PARAMS_ATTENTION_RESOLUTIONS else "DownBlock2D" + down_block_types.append(block_type) + if i != len(block_out_channels) - 1: + resolution *= 2 - up_block_types = [] - for i in range(len(block_out_channels)): - block_type = "CrossAttnUpBlock2D" if resolution in UNET_PARAMS_ATTENTION_RESOLUTIONS else "UpBlock2D" - up_block_types.append(block_type) - resolution //= 2 + up_block_types = [] + for i in range(len(block_out_channels)): + block_type = "CrossAttnUpBlock2D" if resolution in UNET_PARAMS_ATTENTION_RESOLUTIONS else "UpBlock2D" + up_block_types.append(block_type) + resolution //= 2 - config = dict( - sample_size=UNET_PARAMS_IMAGE_SIZE, - in_channels=UNET_PARAMS_IN_CHANNELS, - out_channels=UNET_PARAMS_OUT_CHANNELS, - down_block_types=tuple(down_block_types), - up_block_types=tuple(up_block_types), - block_out_channels=tuple(block_out_channels), - layers_per_block=UNET_PARAMS_NUM_RES_BLOCKS, - cross_attention_dim=UNET_PARAMS_CONTEXT_DIM if not v2 else V2_UNET_PARAMS_CONTEXT_DIM, - attention_head_dim=UNET_PARAMS_NUM_HEADS if not v2 else V2_UNET_PARAMS_ATTENTION_HEAD_DIM, - ) + config = dict( + sample_size=UNET_PARAMS_IMAGE_SIZE, + in_channels=UNET_PARAMS_IN_CHANNELS, + out_channels=UNET_PARAMS_OUT_CHANNELS, + down_block_types=tuple(down_block_types), + up_block_types=tuple(up_block_types), + block_out_channels=tuple(block_out_channels), + layers_per_block=UNET_PARAMS_NUM_RES_BLOCKS, + cross_attention_dim=UNET_PARAMS_CONTEXT_DIM if not v2 else V2_UNET_PARAMS_CONTEXT_DIM, + attention_head_dim=UNET_PARAMS_NUM_HEADS if not v2 else V2_UNET_PARAMS_ATTENTION_HEAD_DIM, + ) - return config + return config def create_vae_diffusers_config(): - """ - Creates a config for the diffusers based on the config of the LDM model. - """ - # vae_params = original_config.model.params.first_stage_config.params.ddconfig - # _ = original_config.model.params.first_stage_config.params.embed_dim - block_out_channels = [VAE_PARAMS_CH * mult for mult in VAE_PARAMS_CH_MULT] - down_block_types = ["DownEncoderBlock2D"] * len(block_out_channels) - up_block_types = ["UpDecoderBlock2D"] * len(block_out_channels) + """ + Creates a config for the diffusers based on the config of the LDM model. + """ + # vae_params = original_config.model.params.first_stage_config.params.ddconfig + # _ = original_config.model.params.first_stage_config.params.embed_dim + block_out_channels = [VAE_PARAMS_CH * mult for mult in VAE_PARAMS_CH_MULT] + down_block_types = ["DownEncoderBlock2D"] * len(block_out_channels) + up_block_types = ["UpDecoderBlock2D"] * len(block_out_channels) - config = dict( - sample_size=VAE_PARAMS_RESOLUTION, - in_channels=VAE_PARAMS_IN_CHANNELS, - out_channels=VAE_PARAMS_OUT_CH, - down_block_types=tuple(down_block_types), - up_block_types=tuple(up_block_types), - block_out_channels=tuple(block_out_channels), - latent_channels=VAE_PARAMS_Z_CHANNELS, - layers_per_block=VAE_PARAMS_NUM_RES_BLOCKS, - ) - return config + config = dict( + sample_size=VAE_PARAMS_RESOLUTION, + in_channels=VAE_PARAMS_IN_CHANNELS, + out_channels=VAE_PARAMS_OUT_CH, + down_block_types=tuple(down_block_types), + up_block_types=tuple(up_block_types), + block_out_channels=tuple(block_out_channels), + latent_channels=VAE_PARAMS_Z_CHANNELS, + layers_per_block=VAE_PARAMS_NUM_RES_BLOCKS, + ) + return config def convert_ldm_clip_checkpoint_v1(checkpoint): - keys = list(checkpoint.keys()) - text_model_dict = {} - for key in keys: - if key.startswith("cond_stage_model.transformer"): - text_model_dict[key[len("cond_stage_model.transformer."):]] = checkpoint[key] - return text_model_dict + keys = list(checkpoint.keys()) + text_model_dict = {} + for key in keys: + if key.startswith("cond_stage_model.transformer"): + text_model_dict[key[len("cond_stage_model.transformer.") :]] = checkpoint[key] + return text_model_dict def convert_ldm_clip_checkpoint_v2(checkpoint, max_length): - # 嫌になるくらい違うぞ！ - def convert_key(key): - if not key.startswith("cond_stage_model"): - return None + # 嫌になるくらい違うぞ！ + def convert_key(key): + if not key.startswith("cond_stage_model"): + return None - # common conversion - key = key.replace("cond_stage_model.model.transformer.", "text_model.encoder.") - key = key.replace("cond_stage_model.model.", "text_model.") + # common conversion + key = key.replace("cond_stage_model.model.transformer.", "text_model.encoder.") + key = key.replace("cond_stage_model.model.", "text_model.") - if "resblocks" in key: - # resblocks conversion - key = key.replace(".resblocks.", ".layers.") - if ".ln_" in key: - key = key.replace(".ln_", ".layer_norm") - elif ".mlp." in key: - key = key.replace(".c_fc.", ".fc1.") - key = key.replace(".c_proj.", ".fc2.") - elif '.attn.out_proj' in key: - key = key.replace(".attn.out_proj.", ".self_attn.out_proj.") - elif '.attn.in_proj' in key: - key = None # 特殊なので後で処理する - else: - raise ValueError(f"unexpected key in SD: {key}") - elif '.positional_embedding' in key: - key = key.replace(".positional_embedding", ".embeddings.position_embedding.weight") - elif '.text_projection' in key: - key = None # 使われない??? - elif '.logit_scale' in key: - key = None # 使われない??? - elif '.token_embedding' in key: - key = key.replace(".token_embedding.weight", ".embeddings.token_embedding.weight") - elif '.ln_final' in key: - key = key.replace(".ln_final", ".final_layer_norm") - return key + if "resblocks" in key: + # resblocks conversion + key = key.replace(".resblocks.", ".layers.") + if ".ln_" in key: + key = key.replace(".ln_", ".layer_norm") + elif ".mlp." in key: + key = key.replace(".c_fc.", ".fc1.") + key = key.replace(".c_proj.", ".fc2.") + elif ".attn.out_proj" in key: + key = key.replace(".attn.out_proj.", ".self_attn.out_proj.") + elif ".attn.in_proj" in key: + key = None # 特殊なので後で処理する + else: + raise ValueError(f"unexpected key in SD: {key}") + elif ".positional_embedding" in key: + key = key.replace(".positional_embedding", ".embeddings.position_embedding.weight") + elif ".text_projection" in key: + key = None # 使われない??? + elif ".logit_scale" in key: + key = None # 使われない??? + elif ".token_embedding" in key: + key = key.replace(".token_embedding.weight", ".embeddings.token_embedding.weight") + elif ".ln_final" in key: + key = key.replace(".ln_final", ".final_layer_norm") + return key - keys = list(checkpoint.keys()) - new_sd = {} - for key in keys: - # remove resblocks 23 - if '.resblocks.23.' in key: - continue - new_key = convert_key(key) - if new_key is None: - continue - new_sd[new_key] = checkpoint[key] + keys = list(checkpoint.keys()) + new_sd = {} + for key in keys: + # remove resblocks 23 + if ".resblocks.23." in key: + continue + new_key = convert_key(key) + if new_key is None: + continue + new_sd[new_key] = checkpoint[key] - # attnの変換 - for key in keys: - if '.resblocks.23.' in key: - continue - if '.resblocks' in key and '.attn.in_proj_' in key: - # 三つに分割 - values = torch.chunk(checkpoint[key], 3) + # attnの変換 + for key in keys: + if ".resblocks.23." in key: + continue + if ".resblocks" in key and ".attn.in_proj_" in key: + # 三つに分割 + values = torch.chunk(checkpoint[key], 3) - key_suffix = ".weight" if "weight" in key else ".bias" - key_pfx = key.replace("cond_stage_model.model.transformer.resblocks.", "text_model.encoder.layers.") - key_pfx = key_pfx.replace("_weight", "") - key_pfx = key_pfx.replace("_bias", "") - key_pfx = key_pfx.replace(".attn.in_proj", ".self_attn.") - new_sd[key_pfx + "q_proj" + key_suffix] = values[0] - new_sd[key_pfx + "k_proj" + key_suffix] = values[1] - new_sd[key_pfx + "v_proj" + key_suffix] = values[2] + key_suffix = ".weight" if "weight" in key else ".bias" + key_pfx = key.replace("cond_stage_model.model.transformer.resblocks.", "text_model.encoder.layers.") + key_pfx = key_pfx.replace("_weight", "") + key_pfx = key_pfx.replace("_bias", "") + key_pfx = key_pfx.replace(".attn.in_proj", ".self_attn.") + new_sd[key_pfx + "q_proj" + key_suffix] = values[0] + new_sd[key_pfx + "k_proj" + key_suffix] = values[1] + new_sd[key_pfx + "v_proj" + key_suffix] = values[2] - # rename or add position_ids - ANOTHER_POSITION_IDS_KEY = "text_model.encoder.text_model.embeddings.position_ids" - if ANOTHER_POSITION_IDS_KEY in new_sd: - # waifu diffusion v1.4 - position_ids = new_sd[ANOTHER_POSITION_IDS_KEY] - del new_sd[ANOTHER_POSITION_IDS_KEY] - else: - position_ids = torch.Tensor([list(range(max_length))]).to(torch.int64) + # rename or add position_ids + ANOTHER_POSITION_IDS_KEY = "text_model.encoder.text_model.embeddings.position_ids" + if ANOTHER_POSITION_IDS_KEY in new_sd: + # waifu diffusion v1.4 + position_ids = new_sd[ANOTHER_POSITION_IDS_KEY] + del new_sd[ANOTHER_POSITION_IDS_KEY] + else: + position_ids = torch.Tensor([list(range(max_length))]).to(torch.int64) + + new_sd["text_model.embeddings.position_ids"] = position_ids + return new_sd - new_sd["text_model.embeddings.position_ids"] = position_ids - return new_sd # endregion @@ -642,547 +620,546 @@ def convert_ldm_clip_checkpoint_v2(checkpoint, max_length): # region Diffusers->StableDiffusion の変換コード # convert_diffusers_to_original_stable_diffusion をコピーして修正している（ASL 2.0） + def conv_transformer_to_linear(checkpoint): - keys = list(checkpoint.keys()) - tf_keys = ["proj_in.weight", "proj_out.weight"] - for key in keys: - if ".".join(key.split(".")[-2:]) in tf_keys: - if checkpoint[key].ndim > 2: - checkpoint[key] = checkpoint[key][:, :, 0, 0] + keys = list(checkpoint.keys()) + tf_keys = ["proj_in.weight", "proj_out.weight"] + for key in keys: + if ".".join(key.split(".")[-2:]) in tf_keys: + if checkpoint[key].ndim > 2: + checkpoint[key] = checkpoint[key][:, :, 0, 0] def convert_unet_state_dict_to_sd(v2, unet_state_dict): - unet_conversion_map = [ - # (stable-diffusion, HF Diffusers) - ("time_embed.0.weight", "time_embedding.linear_1.weight"), - ("time_embed.0.bias", "time_embedding.linear_1.bias"), - ("time_embed.2.weight", "time_embedding.linear_2.weight"), - ("time_embed.2.bias", "time_embedding.linear_2.bias"), - ("input_blocks.0.0.weight", "conv_in.weight"), - ("input_blocks.0.0.bias", "conv_in.bias"), - ("out.0.weight", "conv_norm_out.weight"), - ("out.0.bias", "conv_norm_out.bias"), - ("out.2.weight", "conv_out.weight"), - ("out.2.bias", "conv_out.bias"), - ] + unet_conversion_map = [ + # (stable-diffusion, HF Diffusers) + ("time_embed.0.weight", "time_embedding.linear_1.weight"), + ("time_embed.0.bias", "time_embedding.linear_1.bias"), + ("time_embed.2.weight", "time_embedding.linear_2.weight"), + ("time_embed.2.bias", "time_embedding.linear_2.bias"), + ("input_blocks.0.0.weight", "conv_in.weight"), + ("input_blocks.0.0.bias", "conv_in.bias"), + ("out.0.weight", "conv_norm_out.weight"), + ("out.0.bias", "conv_norm_out.bias"), + ("out.2.weight", "conv_out.weight"), + ("out.2.bias", "conv_out.bias"), + ] - unet_conversion_map_resnet = [ - # (stable-diffusion, HF Diffusers) - ("in_layers.0", "norm1"), - ("in_layers.2", "conv1"), - ("out_layers.0", "norm2"), - ("out_layers.3", "conv2"), - ("emb_layers.1", "time_emb_proj"), - ("skip_connection", "conv_shortcut"), - ] + unet_conversion_map_resnet = [ + # (stable-diffusion, HF Diffusers) + ("in_layers.0", "norm1"), + ("in_layers.2", "conv1"), + ("out_layers.0", "norm2"), + ("out_layers.3", "conv2"), + ("emb_layers.1", "time_emb_proj"), + ("skip_connection", "conv_shortcut"), + ] - unet_conversion_map_layer = [] - for i in range(4): - # loop over downblocks/upblocks + unet_conversion_map_layer = [] + for i in range(4): + # loop over downblocks/upblocks + + for j in range(2): + # loop over resnets/attentions for downblocks + hf_down_res_prefix = f"down_blocks.{i}.resnets.{j}." + sd_down_res_prefix = f"input_blocks.{3*i + j + 1}.0." + unet_conversion_map_layer.append((sd_down_res_prefix, hf_down_res_prefix)) + + if i < 3: + # no attention layers in down_blocks.3 + hf_down_atn_prefix = f"down_blocks.{i}.attentions.{j}." + sd_down_atn_prefix = f"input_blocks.{3*i + j + 1}.1." + unet_conversion_map_layer.append((sd_down_atn_prefix, hf_down_atn_prefix)) + + for j in range(3): + # loop over resnets/attentions for upblocks + hf_up_res_prefix = f"up_blocks.{i}.resnets.{j}." + sd_up_res_prefix = f"output_blocks.{3*i + j}.0." + unet_conversion_map_layer.append((sd_up_res_prefix, hf_up_res_prefix)) + + if i > 0: + # no attention layers in up_blocks.0 + hf_up_atn_prefix = f"up_blocks.{i}.attentions.{j}." + sd_up_atn_prefix = f"output_blocks.{3*i + j}.1." + unet_conversion_map_layer.append((sd_up_atn_prefix, hf_up_atn_prefix)) + + if i < 3: + # no downsample in down_blocks.3 + hf_downsample_prefix = f"down_blocks.{i}.downsamplers.0.conv." + sd_downsample_prefix = f"input_blocks.{3*(i+1)}.0.op." + unet_conversion_map_layer.append((sd_downsample_prefix, hf_downsample_prefix)) + + # no upsample in up_blocks.3 + hf_upsample_prefix = f"up_blocks.{i}.upsamplers.0." + sd_upsample_prefix = f"output_blocks.{3*i + 2}.{1 if i == 0 else 2}." + unet_conversion_map_layer.append((sd_upsample_prefix, hf_upsample_prefix)) + + hf_mid_atn_prefix = "mid_block.attentions.0." + sd_mid_atn_prefix = "middle_block.1." + unet_conversion_map_layer.append((sd_mid_atn_prefix, hf_mid_atn_prefix)) for j in range(2): - # loop over resnets/attentions for downblocks - hf_down_res_prefix = f"down_blocks.{i}.resnets.{j}." - sd_down_res_prefix = f"input_blocks.{3*i + j + 1}.0." - unet_conversion_map_layer.append((sd_down_res_prefix, hf_down_res_prefix)) + hf_mid_res_prefix = f"mid_block.resnets.{j}." + sd_mid_res_prefix = f"middle_block.{2*j}." + unet_conversion_map_layer.append((sd_mid_res_prefix, hf_mid_res_prefix)) - if i < 3: - # no attention layers in down_blocks.3 - hf_down_atn_prefix = f"down_blocks.{i}.attentions.{j}." - sd_down_atn_prefix = f"input_blocks.{3*i + j + 1}.1." - unet_conversion_map_layer.append((sd_down_atn_prefix, hf_down_atn_prefix)) + # buyer beware: this is a *brittle* function, + # and correct output requires that all of these pieces interact in + # the exact order in which I have arranged them. + mapping = {k: k for k in unet_state_dict.keys()} + for sd_name, hf_name in unet_conversion_map: + mapping[hf_name] = sd_name + for k, v in mapping.items(): + if "resnets" in k: + for sd_part, hf_part in unet_conversion_map_resnet: + v = v.replace(hf_part, sd_part) + mapping[k] = v + for k, v in mapping.items(): + for sd_part, hf_part in unet_conversion_map_layer: + v = v.replace(hf_part, sd_part) + mapping[k] = v + new_state_dict = {v: unet_state_dict[k] for k, v in mapping.items()} - for j in range(3): - # loop over resnets/attentions for upblocks - hf_up_res_prefix = f"up_blocks.{i}.resnets.{j}." - sd_up_res_prefix = f"output_blocks.{3*i + j}.0." - unet_conversion_map_layer.append((sd_up_res_prefix, hf_up_res_prefix)) + if v2: + conv_transformer_to_linear(new_state_dict) - if i > 0: - # no attention layers in up_blocks.0 - hf_up_atn_prefix = f"up_blocks.{i}.attentions.{j}." - sd_up_atn_prefix = f"output_blocks.{3*i + j}.1." - unet_conversion_map_layer.append((sd_up_atn_prefix, hf_up_atn_prefix)) - - if i < 3: - # no downsample in down_blocks.3 - hf_downsample_prefix = f"down_blocks.{i}.downsamplers.0.conv." - sd_downsample_prefix = f"input_blocks.{3*(i+1)}.0.op." - unet_conversion_map_layer.append((sd_downsample_prefix, hf_downsample_prefix)) - - # no upsample in up_blocks.3 - hf_upsample_prefix = f"up_blocks.{i}.upsamplers.0." - sd_upsample_prefix = f"output_blocks.{3*i + 2}.{1 if i == 0 else 2}." - unet_conversion_map_layer.append((sd_upsample_prefix, hf_upsample_prefix)) - - hf_mid_atn_prefix = "mid_block.attentions.0." - sd_mid_atn_prefix = "middle_block.1." - unet_conversion_map_layer.append((sd_mid_atn_prefix, hf_mid_atn_prefix)) - - for j in range(2): - hf_mid_res_prefix = f"mid_block.resnets.{j}." - sd_mid_res_prefix = f"middle_block.{2*j}." - unet_conversion_map_layer.append((sd_mid_res_prefix, hf_mid_res_prefix)) - - # buyer beware: this is a *brittle* function, - # and correct output requires that all of these pieces interact in - # the exact order in which I have arranged them. - mapping = {k: k for k in unet_state_dict.keys()} - for sd_name, hf_name in unet_conversion_map: - mapping[hf_name] = sd_name - for k, v in mapping.items(): - if "resnets" in k: - for sd_part, hf_part in unet_conversion_map_resnet: - v = v.replace(hf_part, sd_part) - mapping[k] = v - for k, v in mapping.items(): - for sd_part, hf_part in unet_conversion_map_layer: - v = v.replace(hf_part, sd_part) - mapping[k] = v - new_state_dict = {v: unet_state_dict[k] for k, v in mapping.items()} - - if v2: - conv_transformer_to_linear(new_state_dict) - - return new_state_dict + return new_state_dict # ================# # VAE Conversion # # ================# + def reshape_weight_for_sd(w): # convert HF linear weights to SD conv2d weights - return w.reshape(*w.shape, 1, 1) + return w.reshape(*w.shape, 1, 1) def convert_vae_state_dict(vae_state_dict): - vae_conversion_map = [ - # (stable-diffusion, HF Diffusers) - ("nin_shortcut", "conv_shortcut"), - ("norm_out", "conv_norm_out"), - ("mid.attn_1.", "mid_block.attentions.0."), - ] + vae_conversion_map = [ + # (stable-diffusion, HF Diffusers) + ("nin_shortcut", "conv_shortcut"), + ("norm_out", "conv_norm_out"), + ("mid.attn_1.", "mid_block.attentions.0."), + ] - for i in range(4): - # down_blocks have two resnets - for j in range(2): - hf_down_prefix = f"encoder.down_blocks.{i}.resnets.{j}." - sd_down_prefix = f"encoder.down.{i}.block.{j}." - vae_conversion_map.append((sd_down_prefix, hf_down_prefix)) + for i in range(4): + # down_blocks have two resnets + for j in range(2): + hf_down_prefix = f"encoder.down_blocks.{i}.resnets.{j}." + sd_down_prefix = f"encoder.down.{i}.block.{j}." + vae_conversion_map.append((sd_down_prefix, hf_down_prefix)) - if i < 3: - hf_downsample_prefix = f"down_blocks.{i}.downsamplers.0." - sd_downsample_prefix = f"down.{i}.downsample." - vae_conversion_map.append((sd_downsample_prefix, hf_downsample_prefix)) + if i < 3: + hf_downsample_prefix = f"down_blocks.{i}.downsamplers.0." + sd_downsample_prefix = f"down.{i}.downsample." + vae_conversion_map.append((sd_downsample_prefix, hf_downsample_prefix)) - hf_upsample_prefix = f"up_blocks.{i}.upsamplers.0." - sd_upsample_prefix = f"up.{3-i}.upsample." - vae_conversion_map.append((sd_upsample_prefix, hf_upsample_prefix)) + hf_upsample_prefix = f"up_blocks.{i}.upsamplers.0." + sd_upsample_prefix = f"up.{3-i}.upsample." + vae_conversion_map.append((sd_upsample_prefix, hf_upsample_prefix)) - # up_blocks have three resnets - # also, up blocks in hf are numbered in reverse from sd - for j in range(3): - hf_up_prefix = f"decoder.up_blocks.{i}.resnets.{j}." - sd_up_prefix = f"decoder.up.{3-i}.block.{j}." - vae_conversion_map.append((sd_up_prefix, hf_up_prefix)) + # up_blocks have three resnets + # also, up blocks in hf are numbered in reverse from sd + for j in range(3): + hf_up_prefix = f"decoder.up_blocks.{i}.resnets.{j}." + sd_up_prefix = f"decoder.up.{3-i}.block.{j}." + vae_conversion_map.append((sd_up_prefix, hf_up_prefix)) - # this part accounts for mid blocks in both the encoder and the decoder - for i in range(2): - hf_mid_res_prefix = f"mid_block.resnets.{i}." - sd_mid_res_prefix = f"mid.block_{i+1}." - vae_conversion_map.append((sd_mid_res_prefix, hf_mid_res_prefix)) + # this part accounts for mid blocks in both the encoder and the decoder + for i in range(2): + hf_mid_res_prefix = f"mid_block.resnets.{i}." + sd_mid_res_prefix = f"mid.block_{i+1}." + vae_conversion_map.append((sd_mid_res_prefix, hf_mid_res_prefix)) - vae_conversion_map_attn = [ - # (stable-diffusion, HF Diffusers) - ("norm.", "group_norm."), - ("q.", "query."), - ("k.", "key."), - ("v.", "value."), - ("proj_out.", "proj_attn."), - ] + vae_conversion_map_attn = [ + # (stable-diffusion, HF Diffusers) + ("norm.", "group_norm."), + ("q.", "query."), + ("k.", "key."), + ("v.", "value."), + ("proj_out.", "proj_attn."), + ] - mapping = {k: k for k in vae_state_dict.keys()} - for k, v in mapping.items(): - for sd_part, hf_part in vae_conversion_map: - v = v.replace(hf_part, sd_part) - mapping[k] = v - for k, v in mapping.items(): - if "attentions" in k: - for sd_part, hf_part in vae_conversion_map_attn: - v = v.replace(hf_part, sd_part) - mapping[k] = v - new_state_dict = {v: vae_state_dict[k] for k, v in mapping.items()} - weights_to_convert = ["q", "k", "v", "proj_out"] - for k, v in new_state_dict.items(): - for weight_name in weights_to_convert: - if f"mid.attn_1.{weight_name}.weight" in k: - # print(f"Reshaping {k} for SD format") - new_state_dict[k] = reshape_weight_for_sd(v) + mapping = {k: k for k in vae_state_dict.keys()} + for k, v in mapping.items(): + for sd_part, hf_part in vae_conversion_map: + v = v.replace(hf_part, sd_part) + mapping[k] = v + for k, v in mapping.items(): + if "attentions" in k: + for sd_part, hf_part in vae_conversion_map_attn: + v = v.replace(hf_part, sd_part) + mapping[k] = v + new_state_dict = {v: vae_state_dict[k] for k, v in mapping.items()} + weights_to_convert = ["q", "k", "v", "proj_out"] + for k, v in new_state_dict.items(): + for weight_name in weights_to_convert: + if f"mid.attn_1.{weight_name}.weight" in k: + # print(f"Reshaping {k} for SD format") + new_state_dict[k] = reshape_weight_for_sd(v) - return new_state_dict + return new_state_dict # endregion # region 自作のモデル読み書きなど + def is_safetensors(path): - return os.path.splitext(path)[1].lower() == '.safetensors' + return os.path.splitext(path)[1].lower() == ".safetensors" -def load_checkpoint_with_text_encoder_conversion(ckpt_path): - # text encoderの格納形式が違うモデルに対応する ('text_model'がない) - TEXT_ENCODER_KEY_REPLACEMENTS = [ - ('cond_stage_model.transformer.embeddings.', 'cond_stage_model.transformer.text_model.embeddings.'), - ('cond_stage_model.transformer.encoder.', 'cond_stage_model.transformer.text_model.encoder.'), - ('cond_stage_model.transformer.final_layer_norm.', 'cond_stage_model.transformer.text_model.final_layer_norm.') - ] +def load_checkpoint_with_text_encoder_conversion(ckpt_path, device="cpu"): + # text encoderの格納形式が違うモデルに対応する ('text_model'がない) + TEXT_ENCODER_KEY_REPLACEMENTS = [ + ("cond_stage_model.transformer.embeddings.", "cond_stage_model.transformer.text_model.embeddings."), + ("cond_stage_model.transformer.encoder.", "cond_stage_model.transformer.text_model.encoder."), + ("cond_stage_model.transformer.final_layer_norm.", "cond_stage_model.transformer.text_model.final_layer_norm."), + ] - if is_safetensors(ckpt_path): - checkpoint = None - state_dict = load_file(ckpt_path, "cpu") - else: - checkpoint = torch.load(ckpt_path, map_location="cpu") - if "state_dict" in checkpoint: - state_dict = checkpoint["state_dict"] + if is_safetensors(ckpt_path): + checkpoint = None + state_dict = load_file(ckpt_path) # , device) # may causes error else: - state_dict = checkpoint - checkpoint = None + checkpoint = torch.load(ckpt_path, map_location=device) + if "state_dict" in checkpoint: + state_dict = checkpoint["state_dict"] + else: + state_dict = checkpoint + checkpoint = None - key_reps = [] - for rep_from, rep_to in TEXT_ENCODER_KEY_REPLACEMENTS: - for key in state_dict.keys(): - if key.startswith(rep_from): - new_key = rep_to + key[len(rep_from):] - key_reps.append((key, new_key)) + key_reps = [] + for rep_from, rep_to in TEXT_ENCODER_KEY_REPLACEMENTS: + for key in state_dict.keys(): + if key.startswith(rep_from): + new_key = rep_to + key[len(rep_from) :] + key_reps.append((key, new_key)) - for key, new_key in key_reps: - state_dict[new_key] = state_dict[key] - del state_dict[key] + for key, new_key in key_reps: + state_dict[new_key] = state_dict[key] + del state_dict[key] - return checkpoint, state_dict + return checkpoint, state_dict # TODO dtype指定の動作が怪しいので確認する text_encoderを指定形式で作れるか未確認 -def load_models_from_stable_diffusion_checkpoint(v2, ckpt_path, dtype=None): - _, state_dict = load_checkpoint_with_text_encoder_conversion(ckpt_path) - if dtype is not None: - for k, v in state_dict.items(): - if type(v) is torch.Tensor: - state_dict[k] = v.to(dtype) +def load_models_from_stable_diffusion_checkpoint(v2, ckpt_path, device="cpu", dtype=None): + _, state_dict = load_checkpoint_with_text_encoder_conversion(ckpt_path, device) - # Convert the UNet2DConditionModel model. - unet_config = create_unet_diffusers_config(v2) - converted_unet_checkpoint = convert_ldm_unet_checkpoint(v2, state_dict, unet_config) + # Convert the UNet2DConditionModel model. + unet_config = create_unet_diffusers_config(v2) + converted_unet_checkpoint = convert_ldm_unet_checkpoint(v2, state_dict, unet_config) - unet = UNet2DConditionModel(**unet_config) - info = unet.load_state_dict(converted_unet_checkpoint) - print("loading u-net:", info) + unet = UNet2DConditionModel(**unet_config).to(device) + info = unet.load_state_dict(converted_unet_checkpoint) + print("loading u-net:", info) - # Convert the VAE model. - vae_config = create_vae_diffusers_config() - converted_vae_checkpoint = convert_ldm_vae_checkpoint(state_dict, vae_config) + # Convert the VAE model. + vae_config = create_vae_diffusers_config() + converted_vae_checkpoint = convert_ldm_vae_checkpoint(state_dict, vae_config) - vae = AutoencoderKL(**vae_config) - info = vae.load_state_dict(converted_vae_checkpoint) - print("loading vae:", info) + vae = AutoencoderKL(**vae_config).to(device) + info = vae.load_state_dict(converted_vae_checkpoint) + print("loading vae:", info) - # convert text_model - if v2: - converted_text_encoder_checkpoint = convert_ldm_clip_checkpoint_v2(state_dict, 77) - cfg = CLIPTextConfig( - vocab_size=49408, - hidden_size=1024, - intermediate_size=4096, - num_hidden_layers=23, - num_attention_heads=16, - max_position_embeddings=77, - hidden_act="gelu", - layer_norm_eps=1e-05, - dropout=0.0, - attention_dropout=0.0, - initializer_range=0.02, - initializer_factor=1.0, - pad_token_id=1, - bos_token_id=0, - eos_token_id=2, - model_type="clip_text_model", - projection_dim=512, - torch_dtype="float32", - transformers_version="4.25.0.dev0", - ) - text_model = CLIPTextModel._from_config(cfg) - info = text_model.load_state_dict(converted_text_encoder_checkpoint) - else: - converted_text_encoder_checkpoint = convert_ldm_clip_checkpoint_v1(state_dict) + # convert text_model + if v2: + converted_text_encoder_checkpoint = convert_ldm_clip_checkpoint_v2(state_dict, 77) + cfg = CLIPTextConfig( + vocab_size=49408, + hidden_size=1024, + intermediate_size=4096, + num_hidden_layers=23, + num_attention_heads=16, + max_position_embeddings=77, + hidden_act="gelu", + layer_norm_eps=1e-05, + dropout=0.0, + attention_dropout=0.0, + initializer_range=0.02, + initializer_factor=1.0, + pad_token_id=1, + bos_token_id=0, + eos_token_id=2, + model_type="clip_text_model", + projection_dim=512, + torch_dtype="float32", + transformers_version="4.25.0.dev0", + ) + text_model = CLIPTextModel._from_config(cfg) + info = text_model.load_state_dict(converted_text_encoder_checkpoint) + else: + converted_text_encoder_checkpoint = convert_ldm_clip_checkpoint_v1(state_dict) - logging.set_verbosity_error() # don't show annoying warning - text_model = CLIPTextModel.from_pretrained("openai/clip-vit-large-patch14") - logging.set_verbosity_warning() + logging.set_verbosity_error() # don't show annoying warning + text_model = CLIPTextModel.from_pretrained("openai/clip-vit-large-patch14").to(device) + logging.set_verbosity_warning() - info = text_model.load_state_dict(converted_text_encoder_checkpoint) - print("loading text encoder:", info) + info = text_model.load_state_dict(converted_text_encoder_checkpoint) + print("loading text encoder:", info) - return text_model, vae, unet + return text_model, vae, unet def convert_text_encoder_state_dict_to_sd_v2(checkpoint, make_dummy_weights=False): - def convert_key(key): - # position_idsの除去 - if ".position_ids" in key: - return None + def convert_key(key): + # position_idsの除去 + if ".position_ids" in key: + return None - # common - key = key.replace("text_model.encoder.", "transformer.") - key = key.replace("text_model.", "") - if "layers" in key: - # resblocks conversion - key = key.replace(".layers.", ".resblocks.") - if ".layer_norm" in key: - key = key.replace(".layer_norm", ".ln_") - elif ".mlp." in key: - key = key.replace(".fc1.", ".c_fc.") - key = key.replace(".fc2.", ".c_proj.") - elif '.self_attn.out_proj' in key: - key = key.replace(".self_attn.out_proj.", ".attn.out_proj.") - elif '.self_attn.' in key: - key = None # 特殊なので後で処理する - else: - raise ValueError(f"unexpected key in DiffUsers model: {key}") - elif '.position_embedding' in key: - key = key.replace("embeddings.position_embedding.weight", "positional_embedding") - elif '.token_embedding' in key: - key = key.replace("embeddings.token_embedding.weight", "token_embedding.weight") - elif 'final_layer_norm' in key: - key = key.replace("final_layer_norm", "ln_final") - return key + # common + key = key.replace("text_model.encoder.", "transformer.") + key = key.replace("text_model.", "") + if "layers" in key: + # resblocks conversion + key = key.replace(".layers.", ".resblocks.") + if ".layer_norm" in key: + key = key.replace(".layer_norm", ".ln_") + elif ".mlp." in key: + key = key.replace(".fc1.", ".c_fc.") + key = key.replace(".fc2.", ".c_proj.") + elif ".self_attn.out_proj" in key: + key = key.replace(".self_attn.out_proj.", ".attn.out_proj.") + elif ".self_attn." in key: + key = None # 特殊なので後で処理する + else: + raise ValueError(f"unexpected key in DiffUsers model: {key}") + elif ".position_embedding" in key: + key = key.replace("embeddings.position_embedding.weight", "positional_embedding") + elif ".token_embedding" in key: + key = key.replace("embeddings.token_embedding.weight", "token_embedding.weight") + elif "final_layer_norm" in key: + key = key.replace("final_layer_norm", "ln_final") + return key - keys = list(checkpoint.keys()) - new_sd = {} - for key in keys: - new_key = convert_key(key) - if new_key is None: - continue - new_sd[new_key] = checkpoint[key] - - # attnの変換 - for key in keys: - if 'layers' in key and 'q_proj' in key: - # 三つを結合 - key_q = key - key_k = key.replace("q_proj", "k_proj") - key_v = key.replace("q_proj", "v_proj") - - value_q = checkpoint[key_q] - value_k = checkpoint[key_k] - value_v = checkpoint[key_v] - value = torch.cat([value_q, value_k, value_v]) - - new_key = key.replace("text_model.encoder.layers.", "transformer.resblocks.") - new_key = new_key.replace(".self_attn.q_proj.", ".attn.in_proj_") - new_sd[new_key] = value - - # 最後の層などを捏造するか - if make_dummy_weights: - print("make dummy weights for resblock.23, text_projection and logit scale.") - keys = list(new_sd.keys()) + keys = list(checkpoint.keys()) + new_sd = {} for key in keys: - if key.startswith("transformer.resblocks.22."): - new_sd[key.replace(".22.", ".23.")] = new_sd[key].clone() # copyしないとsafetensorsの保存で落ちる + new_key = convert_key(key) + if new_key is None: + continue + new_sd[new_key] = checkpoint[key] - # Diffusersに含まれない重みを作っておく - new_sd['text_projection'] = torch.ones((1024, 1024), dtype=new_sd[keys[0]].dtype, device=new_sd[keys[0]].device) - new_sd['logit_scale'] = torch.tensor(1) + # attnの変換 + for key in keys: + if "layers" in key and "q_proj" in key: + # 三つを結合 + key_q = key + key_k = key.replace("q_proj", "k_proj") + key_v = key.replace("q_proj", "v_proj") - return new_sd + value_q = checkpoint[key_q] + value_k = checkpoint[key_k] + value_v = checkpoint[key_v] + value = torch.cat([value_q, value_k, value_v]) + + new_key = key.replace("text_model.encoder.layers.", "transformer.resblocks.") + new_key = new_key.replace(".self_attn.q_proj.", ".attn.in_proj_") + new_sd[new_key] = value + + # 最後の層などを捏造するか + if make_dummy_weights: + print("make dummy weights for resblock.23, text_projection and logit scale.") + keys = list(new_sd.keys()) + for key in keys: + if key.startswith("transformer.resblocks.22."): + new_sd[key.replace(".22.", ".23.")] = new_sd[key].clone() # copyしないとsafetensorsの保存で落ちる + + # Diffusersに含まれない重みを作っておく + new_sd["text_projection"] = torch.ones((1024, 1024), dtype=new_sd[keys[0]].dtype, device=new_sd[keys[0]].device) + new_sd["logit_scale"] = torch.tensor(1) + + return new_sd def save_stable_diffusion_checkpoint(v2, output_file, text_encoder, unet, ckpt_path, epochs, steps, save_dtype=None, vae=None): - if ckpt_path is not None: - # epoch/stepを参照する。またVAEがメモリ上にないときなど、もう一度VAEを含めて読み込む - checkpoint, state_dict = load_checkpoint_with_text_encoder_conversion(ckpt_path) - if checkpoint is None: # safetensors または state_dictのckpt - checkpoint = {} - strict = False + if ckpt_path is not None: + # epoch/stepを参照する。またVAEがメモリ上にないときなど、もう一度VAEを含めて読み込む + checkpoint, state_dict = load_checkpoint_with_text_encoder_conversion(ckpt_path) + if checkpoint is None: # safetensors または state_dictのckpt + checkpoint = {} + strict = False + else: + strict = True + if "state_dict" in state_dict: + del state_dict["state_dict"] else: - strict = True - if "state_dict" in state_dict: - del state_dict["state_dict"] - else: - # 新しく作る - assert vae is not None, "VAE is required to save a checkpoint without a given checkpoint" - checkpoint = {} - state_dict = {} - strict = False + # 新しく作る + assert vae is not None, "VAE is required to save a checkpoint without a given checkpoint" + checkpoint = {} + state_dict = {} + strict = False - def update_sd(prefix, sd): - for k, v in sd.items(): - key = prefix + k - assert not strict or key in state_dict, f"Illegal key in save SD: {key}" - if save_dtype is not None: - v = v.detach().clone().to("cpu").to(save_dtype) - state_dict[key] = v + def update_sd(prefix, sd): + for k, v in sd.items(): + key = prefix + k + assert not strict or key in state_dict, f"Illegal key in save SD: {key}" + if save_dtype is not None: + v = v.detach().clone().to("cpu").to(save_dtype) + state_dict[key] = v - # Convert the UNet model - unet_state_dict = convert_unet_state_dict_to_sd(v2, unet.state_dict()) - update_sd("model.diffusion_model.", unet_state_dict) + # Convert the UNet model + unet_state_dict = convert_unet_state_dict_to_sd(v2, unet.state_dict()) + update_sd("model.diffusion_model.", unet_state_dict) - # Convert the text encoder model - if v2: - make_dummy = ckpt_path is None # 参照元のcheckpointがない場合は最後の層を前の層から複製して作るなどダミーの重みを入れる - text_enc_dict = convert_text_encoder_state_dict_to_sd_v2(text_encoder.state_dict(), make_dummy) - update_sd("cond_stage_model.model.", text_enc_dict) - else: - text_enc_dict = text_encoder.state_dict() - update_sd("cond_stage_model.transformer.", text_enc_dict) + # Convert the text encoder model + if v2: + make_dummy = ckpt_path is None # 参照元のcheckpointがない場合は最後の層を前の層から複製して作るなどダミーの重みを入れる + text_enc_dict = convert_text_encoder_state_dict_to_sd_v2(text_encoder.state_dict(), make_dummy) + update_sd("cond_stage_model.model.", text_enc_dict) + else: + text_enc_dict = text_encoder.state_dict() + update_sd("cond_stage_model.transformer.", text_enc_dict) - # Convert the VAE - if vae is not None: - vae_dict = convert_vae_state_dict(vae.state_dict()) - update_sd("first_stage_model.", vae_dict) + # Convert the VAE + if vae is not None: + vae_dict = convert_vae_state_dict(vae.state_dict()) + update_sd("first_stage_model.", vae_dict) - # Put together new checkpoint - key_count = len(state_dict.keys()) - new_ckpt = {'state_dict': state_dict} + # Put together new checkpoint + key_count = len(state_dict.keys()) + new_ckpt = {"state_dict": state_dict} - # epoch and global_step are sometimes not int - try: - if 'epoch' in checkpoint: - epochs += checkpoint['epoch'] - if 'global_step' in checkpoint: - steps += checkpoint['global_step'] - except: - pass + # epoch and global_step are sometimes not int + try: + if "epoch" in checkpoint: + epochs += checkpoint["epoch"] + if "global_step" in checkpoint: + steps += checkpoint["global_step"] + except: + pass - new_ckpt['epoch'] = epochs - new_ckpt['global_step'] = steps + new_ckpt["epoch"] = epochs + new_ckpt["global_step"] = steps - if is_safetensors(output_file): - # TODO Tensor以外のdictの値を削除したほうがいいか - save_file(state_dict, output_file) - else: - torch.save(new_ckpt, output_file) + if is_safetensors(output_file): + # TODO Tensor以外のdictの値を削除したほうがいいか + save_file(state_dict, output_file) + else: + torch.save(new_ckpt, output_file) - return key_count + return key_count def save_diffusers_checkpoint(v2, output_dir, text_encoder, unet, pretrained_model_name_or_path, vae=None, use_safetensors=False): - if pretrained_model_name_or_path is None: - # load default settings for v1/v2 - if v2: - pretrained_model_name_or_path = DIFFUSERS_REF_MODEL_ID_V2 - else: - pretrained_model_name_or_path = DIFFUSERS_REF_MODEL_ID_V1 + if pretrained_model_name_or_path is None: + # load default settings for v1/v2 + if v2: + pretrained_model_name_or_path = DIFFUSERS_REF_MODEL_ID_V2 + else: + pretrained_model_name_or_path = DIFFUSERS_REF_MODEL_ID_V1 - scheduler = DDIMScheduler.from_pretrained(pretrained_model_name_or_path, subfolder="scheduler") - tokenizer = CLIPTokenizer.from_pretrained(pretrained_model_name_or_path, subfolder="tokenizer") - if vae is None: - vae = AutoencoderKL.from_pretrained(pretrained_model_name_or_path, subfolder="vae") + scheduler = DDIMScheduler.from_pretrained(pretrained_model_name_or_path, subfolder="scheduler") + tokenizer = CLIPTokenizer.from_pretrained(pretrained_model_name_or_path, subfolder="tokenizer") + if vae is None: + vae = AutoencoderKL.from_pretrained(pretrained_model_name_or_path, subfolder="vae") - pipeline = StableDiffusionPipeline( - unet=unet, - text_encoder=text_encoder, - vae=vae, - scheduler=scheduler, - tokenizer=tokenizer, - safety_checker=None, - feature_extractor=None, - requires_safety_checker=None, - ) - pipeline.save_pretrained(output_dir, safe_serialization=use_safetensors) + pipeline = StableDiffusionPipeline( + unet=unet, + text_encoder=text_encoder, + vae=vae, + scheduler=scheduler, + tokenizer=tokenizer, + safety_checker=None, + feature_extractor=None, + requires_safety_checker=None, + ) + pipeline.save_pretrained(output_dir, safe_serialization=use_safetensors) VAE_PREFIX = "first_stage_model." def load_vae(vae_id, dtype): - print(f"load VAE: {vae_id}") - if os.path.isdir(vae_id) or not os.path.isfile(vae_id): - # Diffusers local/remote - try: - vae = AutoencoderKL.from_pretrained(vae_id, subfolder=None, torch_dtype=dtype) - except EnvironmentError as e: - print(f"exception occurs in loading vae: {e}") - print("retry with subfolder='vae'") - vae = AutoencoderKL.from_pretrained(vae_id, subfolder="vae", torch_dtype=dtype) + print(f"load VAE: {vae_id}") + if os.path.isdir(vae_id) or not os.path.isfile(vae_id): + # Diffusers local/remote + try: + vae = AutoencoderKL.from_pretrained(vae_id, subfolder=None, torch_dtype=dtype) + except EnvironmentError as e: + print(f"exception occurs in loading vae: {e}") + print("retry with subfolder='vae'") + vae = AutoencoderKL.from_pretrained(vae_id, subfolder="vae", torch_dtype=dtype) + return vae + + # local + vae_config = create_vae_diffusers_config() + + if vae_id.endswith(".bin"): + # SD 1.5 VAE on Huggingface + converted_vae_checkpoint = torch.load(vae_id, map_location="cpu") + else: + # StableDiffusion + vae_model = load_file(vae_id, "cpu") if is_safetensors(vae_id) else torch.load(vae_id, map_location="cpu") + vae_sd = vae_model["state_dict"] if "state_dict" in vae_model else vae_model + + # vae only or full model + full_model = False + for vae_key in vae_sd: + if vae_key.startswith(VAE_PREFIX): + full_model = True + break + if not full_model: + sd = {} + for key, value in vae_sd.items(): + sd[VAE_PREFIX + key] = value + vae_sd = sd + del sd + + # Convert the VAE model. + converted_vae_checkpoint = convert_ldm_vae_checkpoint(vae_sd, vae_config) + + vae = AutoencoderKL(**vae_config) + vae.load_state_dict(converted_vae_checkpoint) return vae - # local - vae_config = create_vae_diffusers_config() - - if vae_id.endswith(".bin"): - # SD 1.5 VAE on Huggingface - converted_vae_checkpoint = torch.load(vae_id, map_location="cpu") - else: - # StableDiffusion - vae_model = (load_file(vae_id, "cpu") if is_safetensors(vae_id) - else torch.load(vae_id, map_location="cpu")) - vae_sd = vae_model['state_dict'] if 'state_dict' in vae_model else vae_model - - # vae only or full model - full_model = False - for vae_key in vae_sd: - if vae_key.startswith(VAE_PREFIX): - full_model = True - break - if not full_model: - sd = {} - for key, value in vae_sd.items(): - sd[VAE_PREFIX + key] = value - vae_sd = sd - del sd - - # Convert the VAE model. - converted_vae_checkpoint = convert_ldm_vae_checkpoint(vae_sd, vae_config) - - vae = AutoencoderKL(**vae_config) - vae.load_state_dict(converted_vae_checkpoint) - return vae # endregion def make_bucket_resolutions(max_reso, min_size=256, max_size=1024, divisible=64): - max_width, max_height = max_reso - max_area = (max_width // divisible) * (max_height // divisible) + max_width, max_height = max_reso + max_area = (max_width // divisible) * (max_height // divisible) - resos = set() + resos = set() - size = int(math.sqrt(max_area)) * divisible - resos.add((size, size)) + size = int(math.sqrt(max_area)) * divisible + resos.add((size, size)) - size = min_size - while size <= max_size: - width = size - height = min(max_size, (max_area // (width // divisible)) * divisible) - resos.add((width, height)) - resos.add((height, width)) + size = min_size + while size <= max_size: + width = size + height = min(max_size, (max_area // (width // divisible)) * divisible) + resos.add((width, height)) + resos.add((height, width)) - # # make additional resos - # if width >= height and width - divisible >= min_size: - # resos.add((width - divisible, height)) - # resos.add((height, width - divisible)) - # if height >= width and height - divisible >= min_size: - # resos.add((width, height - divisible)) - # resos.add((height - divisible, width)) + # # make additional resos + # if width >= height and width - divisible >= min_size: + # resos.add((width - divisible, height)) + # resos.add((height, width - divisible)) + # if height >= width and height - divisible >= min_size: + # resos.add((width, height - divisible)) + # resos.add((height - divisible, width)) - size += divisible + size += divisible - resos = list(resos) - resos.sort() - return resos + resos = list(resos) + resos.sort() + return resos -if __name__ == '__main__': - resos = make_bucket_resolutions((512, 768)) - print(len(resos)) - print(resos) - aspect_ratios = [w / h for w, h in resos] - print(aspect_ratios) +if __name__ == "__main__": + resos = make_bucket_resolutions((512, 768)) + print(len(resos)) + print(resos) + aspect_ratios = [w / h for w, h in resos] + print(aspect_ratios) - ars = set() - for ar in aspect_ratios: - if ar in ars: - print("error! duplicate ar:", ar) - ars.add(ar) + ars = set() + for ar in aspect_ratios: + if ar in ars: + print("error! duplicate ar:", ar) + ars.add(ar) diff --git a/library/train_util.py b/library/train_util.py index e1a8e92..59dbc44 100644 --- a/library/train_util.py +++ b/library/train_util.py @@ -404,6 +404,8 @@ class BaseDataset(torch.utils.data.Dataset): self.token_padding_disabled = False self.tag_frequency = {} + self.XTI_layers = None + self.token_strings = None self.enable_bucket = False self.bucket_manager: BucketManager = None # not initialized @@ -464,6 +466,10 @@ class BaseDataset(torch.utils.data.Dataset): def disable_token_padding(self): self.token_padding_disabled = True + def enable_XTI(self, layers=None, token_strings=None): + self.XTI_layers = layers + self.token_strings = token_strings + def add_replacement(self, str_from, str_to): self.replacements[str_from] = str_to @@ -909,9 +915,22 @@ class BaseDataset(torch.utils.data.Dataset): latents_list.append(latents) caption = self.process_caption(subset, image_info.caption) - captions.append(caption) + if self.XTI_layers: + caption_layer = [] + for layer in self.XTI_layers: + token_strings_from = " ".join(self.token_strings) + token_strings_to = " ".join([f"{x}_{layer}" for x in self.token_strings]) + caption_ = caption.replace(token_strings_from, token_strings_to) + caption_layer.append(caption_) + captions.append(caption_layer) + else: + captions.append(caption) if not self.token_padding_disabled: # this option might be omitted in future - input_ids_list.append(self.get_input_ids(caption)) + if self.XTI_layers: + token_caption = self.get_input_ids(caption_layer) + else: + token_caption = self.get_input_ids(caption) + input_ids_list.append(token_caption) example = {} example["loss_weights"] = torch.FloatTensor(loss_weights) @@ -1314,6 +1333,10 @@ class DatasetGroup(torch.utils.data.ConcatDataset): # for dataset in self.datasets: # dataset.make_buckets() + def enable_XTI(self, *args, **kwargs): + for dataset in self.datasets: + dataset.enable_XTI(*args, **kwargs) + def cache_latents(self, vae, vae_batch_size=1): for i, dataset in enumerate(self.datasets): print(f"[Dataset {i}]") @@ -2617,14 +2640,15 @@ def prepare_dtype(args: argparse.Namespace): return weight_dtype, save_dtype -def load_target_model(args: argparse.Namespace, weight_dtype): +def load_target_model(args: argparse.Namespace, weight_dtype, device='cpu'): name_or_path = args.pretrained_model_name_or_path name_or_path = os.readlink(name_or_path) if os.path.islink(name_or_path) else name_or_path load_stable_diffusion_format = os.path.isfile(name_or_path) # determine SD or Diffusers if load_stable_diffusion_format: print("load StableDiffusion checkpoint") - text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(args.v2, name_or_path) + text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(args.v2, name_or_path, device) else: + # Diffusers model is loaded to CPU print("load Diffusers pretrained models") try: pipe = StableDiffusionPipeline.from_pretrained(name_or_path, tokenizer=None, safety_checker=None) diff --git a/networks/lora.py b/networks/lora.py index 6d3875d..2bf7851 100644 --- a/networks/lora.py +++ b/networks/lora.py @@ -13,386 +13,471 @@ from library import train_util class LoRAModule(torch.nn.Module): - """ - replaces forward method of the original Linear, instead of replacing the original Linear module. - """ + """ + replaces forward method of the original Linear, instead of replacing the original Linear module. + """ - def __init__(self, lora_name, org_module: torch.nn.Module, multiplier=1.0, lora_dim=4, alpha=1): - """ if alpha == 0 or None, alpha is rank (no scaling). """ - super().__init__() - self.lora_name = lora_name + def __init__(self, lora_name, org_module: torch.nn.Module, multiplier=1.0, lora_dim=4, alpha=1): + """if alpha == 0 or None, alpha is rank (no scaling).""" + super().__init__() + self.lora_name = lora_name - if org_module.__class__.__name__ == 'Conv2d': - in_dim = org_module.in_channels - out_dim = org_module.out_channels - else: - in_dim = org_module.in_features - out_dim = org_module.out_features + if org_module.__class__.__name__ == "Conv2d": + in_dim = org_module.in_channels + out_dim = org_module.out_channels + else: + in_dim = org_module.in_features + out_dim = org_module.out_features - # if limit_rank: - # self.lora_dim = min(lora_dim, in_dim, out_dim) - # if self.lora_dim != lora_dim: - # print(f"{lora_name} dim (rank) is changed to: {self.lora_dim}") - # else: - self.lora_dim = lora_dim + # if limit_rank: + # self.lora_dim = min(lora_dim, in_dim, out_dim) + # if self.lora_dim != lora_dim: + # print(f"{lora_name} dim (rank) is changed to: {self.lora_dim}") + # else: + self.lora_dim = lora_dim - if org_module.__class__.__name__ == 'Conv2d': - kernel_size = org_module.kernel_size - stride = org_module.stride - padding = org_module.padding - self.lora_down = torch.nn.Conv2d(in_dim, self.lora_dim, kernel_size, stride, padding, bias=False) - self.lora_up = torch.nn.Conv2d(self.lora_dim, out_dim, (1, 1), (1, 1), bias=False) - else: - self.lora_down = torch.nn.Linear(in_dim, self.lora_dim, bias=False) - self.lora_up = torch.nn.Linear(self.lora_dim, out_dim, bias=False) + if org_module.__class__.__name__ == "Conv2d": + kernel_size = org_module.kernel_size + stride = org_module.stride + padding = org_module.padding + self.lora_down = torch.nn.Conv2d(in_dim, self.lora_dim, kernel_size, stride, padding, bias=False) + self.lora_up = torch.nn.Conv2d(self.lora_dim, out_dim, (1, 1), (1, 1), bias=False) + else: + self.lora_down = torch.nn.Linear(in_dim, self.lora_dim, bias=False) + self.lora_up = torch.nn.Linear(self.lora_dim, out_dim, bias=False) - if type(alpha) == torch.Tensor: - alpha = alpha.detach().float().numpy() # without casting, bf16 causes error - alpha = self.lora_dim if alpha is None or alpha == 0 else alpha - self.scale = alpha / self.lora_dim - self.register_buffer('alpha', torch.tensor(alpha)) # 定数として扱える + if type(alpha) == torch.Tensor: + alpha = alpha.detach().float().numpy() # without casting, bf16 causes error + alpha = self.lora_dim if alpha is None or alpha == 0 else alpha + self.scale = alpha / self.lora_dim + self.register_buffer("alpha", torch.tensor(alpha)) # 定数として扱える - # same as microsoft's - torch.nn.init.kaiming_uniform_(self.lora_down.weight, a=math.sqrt(5)) - torch.nn.init.zeros_(self.lora_up.weight) + # same as microsoft's + torch.nn.init.kaiming_uniform_(self.lora_down.weight, a=math.sqrt(5)) + torch.nn.init.zeros_(self.lora_up.weight) - self.multiplier = multiplier - self.org_module = org_module # remove in applying - self.region = None - self.region_mask = None + self.multiplier = multiplier + self.org_module = org_module # remove in applying + self.region = None + self.region_mask = None - def apply_to(self): - self.org_forward = self.org_module.forward - self.org_module.forward = self.forward - del self.org_module + def apply_to(self): + self.org_forward = self.org_module.forward + self.org_module.forward = self.forward + del self.org_module - def set_region(self, region): - self.region = region - self.region_mask = None + def merge_to(self, sd, dtype, device): + # get up/down weight + up_weight = sd["lora_up.weight"].to(torch.float).to(device) + down_weight = sd["lora_down.weight"].to(torch.float).to(device) - def forward(self, x): - if self.region is None: - return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale + # extract weight from org_module + org_sd = self.org_module.state_dict() + weight = org_sd["weight"].to(torch.float) - # regional LoRA FIXME same as additional-network extension - if x.size()[1] % 77 == 0: - # print(f"LoRA for context: {self.lora_name}") - self.region = None - return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale + # merge weight + if len(weight.size()) == 2: + # linear + weight = weight + self.multiplier * (up_weight @ down_weight) * self.scale + elif down_weight.size()[2:4] == (1, 1): + # conv2d 1x1 + weight = ( + weight + + self.multiplier + * (up_weight.squeeze(3).squeeze(2) @ down_weight.squeeze(3).squeeze(2)).unsqueeze(2).unsqueeze(3) + * self.scale + ) + else: + # conv2d 3x3 + conved = torch.nn.functional.conv2d(down_weight.permute(1, 0, 2, 3), up_weight).permute(1, 0, 2, 3) + # print(conved.size(), weight.size(), module.stride, module.padding) + weight = weight + self.multiplier * conved * self.scale - # calculate region mask first time - if self.region_mask is None: - if len(x.size()) == 4: - h, w = x.size()[2:4] - else: - seq_len = x.size()[1] - ratio = math.sqrt((self.region.size()[0] * self.region.size()[1]) / seq_len) - h = int(self.region.size()[0] / ratio + .5) - w = seq_len // h + # set weight to org_module + org_sd["weight"] = weight.to(dtype) + self.org_module.load_state_dict(org_sd) - r = self.region.to(x.device) - if r.dtype == torch.bfloat16: - r = r.to(torch.float) - r = r.unsqueeze(0).unsqueeze(1) - # print(self.lora_name, self.region.size(), x.size(), r.size(), h, w) - r = torch.nn.functional.interpolate(r, (h, w), mode='bilinear') - r = r.to(x.dtype) + def set_region(self, region): + self.region = region + self.region_mask = None - if len(x.size()) == 3: - r = torch.reshape(r, (1, x.size()[1], -1)) + def forward(self, x): + if self.region is None: + return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale - self.region_mask = r + # regional LoRA FIXME same as additional-network extension + if x.size()[1] % 77 == 0: + # print(f"LoRA for context: {self.lora_name}") + self.region = None + return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale - return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale * self.region_mask + # calculate region mask first time + if self.region_mask is None: + if len(x.size()) == 4: + h, w = x.size()[2:4] + else: + seq_len = x.size()[1] + ratio = math.sqrt((self.region.size()[0] * self.region.size()[1]) / seq_len) + h = int(self.region.size()[0] / ratio + 0.5) + w = seq_len // h + + r = self.region.to(x.device) + if r.dtype == torch.bfloat16: + r = r.to(torch.float) + r = r.unsqueeze(0).unsqueeze(1) + # print(self.lora_name, self.region.size(), x.size(), r.size(), h, w) + r = torch.nn.functional.interpolate(r, (h, w), mode="bilinear") + r = r.to(x.dtype) + + if len(x.size()) == 3: + r = torch.reshape(r, (1, x.size()[1], -1)) + + self.region_mask = r + + return self.org_forward(x) + self.lora_up(self.lora_down(x)) * self.multiplier * self.scale * self.region_mask def create_network(multiplier, network_dim, network_alpha, vae, text_encoder, unet, **kwargs): - if network_dim is None: - network_dim = 4 # default + if network_dim is None: + network_dim = 4 # default - # extract dim/alpha for conv2d, and block dim - conv_dim = kwargs.get('conv_dim', None) - conv_alpha = kwargs.get('conv_alpha', None) - if conv_dim is not None: - conv_dim = int(conv_dim) - if conv_alpha is None: - conv_alpha = 1.0 - else: - conv_alpha = float(conv_alpha) + # extract dim/alpha for conv2d, and block dim + conv_dim = kwargs.get("conv_dim", None) + conv_alpha = kwargs.get("conv_alpha", None) + if conv_dim is not None: + conv_dim = int(conv_dim) + if conv_alpha is None: + conv_alpha = 1.0 + else: + conv_alpha = float(conv_alpha) - """ - block_dims = kwargs.get("block_dims") - block_alphas = None + """ + block_dims = kwargs.get("block_dims") + block_alphas = None - if block_dims is not None: + if block_dims is not None: block_dims = [int(d) for d in block_dims.split(',')] assert len(block_dims) == NUM_BLOCKS, f"Number of block dimensions is not same to {NUM_BLOCKS}" block_alphas = kwargs.get("block_alphas") if block_alphas is None: - block_alphas = [1] * len(block_dims) + block_alphas = [1] * len(block_dims) else: - block_alphas = [int(a) for a in block_alphas(',')] + block_alphas = [int(a) for a in block_alphas(',')] assert len(block_alphas) == NUM_BLOCKS, f"Number of block alphas is not same to {NUM_BLOCKS}" - conv_block_dims = kwargs.get("conv_block_dims") - conv_block_alphas = None + conv_block_dims = kwargs.get("conv_block_dims") + conv_block_alphas = None - if conv_block_dims is not None: + if conv_block_dims is not None: conv_block_dims = [int(d) for d in conv_block_dims.split(',')] assert len(conv_block_dims) == NUM_BLOCKS, f"Number of block dimensions is not same to {NUM_BLOCKS}" conv_block_alphas = kwargs.get("conv_block_alphas") if conv_block_alphas is None: - conv_block_alphas = [1] * len(conv_block_dims) + conv_block_alphas = [1] * len(conv_block_dims) else: - conv_block_alphas = [int(a) for a in conv_block_alphas(',')] + conv_block_alphas = [int(a) for a in conv_block_alphas(',')] assert len(conv_block_alphas) == NUM_BLOCKS, f"Number of block alphas is not same to {NUM_BLOCKS}" """ - network = LoRANetwork(text_encoder, unet, multiplier=multiplier, lora_dim=network_dim, - alpha=network_alpha, conv_lora_dim=conv_dim, conv_alpha=conv_alpha) - return network + network = LoRANetwork( + text_encoder, + unet, + multiplier=multiplier, + lora_dim=network_dim, + alpha=network_alpha, + conv_lora_dim=conv_dim, + conv_alpha=conv_alpha, + ) + return network def create_network_from_weights(multiplier, file, vae, text_encoder, unet, weights_sd=None, **kwargs): - if weights_sd is None: - if os.path.splitext(file)[1] == '.safetensors': - from safetensors.torch import load_file, safe_open - weights_sd = load_file(file) - else: - weights_sd = torch.load(file, map_location='cpu') + if weights_sd is None: + if os.path.splitext(file)[1] == ".safetensors": + from safetensors.torch import load_file, safe_open - # get dim/alpha mapping - modules_dim = {} - modules_alpha = {} - for key, value in weights_sd.items(): - if '.' not in key: - continue + weights_sd = load_file(file) + else: + weights_sd = torch.load(file, map_location="cpu") - lora_name = key.split('.')[0] - if 'alpha' in key: - modules_alpha[lora_name] = value - elif 'lora_down' in key: - dim = value.size()[0] - modules_dim[lora_name] = dim - # print(lora_name, value.size(), dim) + # get dim/alpha mapping + modules_dim = {} + modules_alpha = {} + for key, value in weights_sd.items(): + if "." not in key: + continue - # support old LoRA without alpha - for key in modules_dim.keys(): - if key not in modules_alpha: - modules_alpha = modules_dim[key] + lora_name = key.split(".")[0] + if "alpha" in key: + modules_alpha[lora_name] = value + elif "lora_down" in key: + dim = value.size()[0] + modules_dim[lora_name] = dim + # print(lora_name, value.size(), dim) - network = LoRANetwork(text_encoder, unet, multiplier=multiplier, modules_dim=modules_dim, modules_alpha=modules_alpha) - network.weights_sd = weights_sd - return network + # support old LoRA without alpha + for key in modules_dim.keys(): + if key not in modules_alpha: + modules_alpha = modules_dim[key] + + network = LoRANetwork(text_encoder, unet, multiplier=multiplier, modules_dim=modules_dim, modules_alpha=modules_alpha) + network.weights_sd = weights_sd + return network class LoRANetwork(torch.nn.Module): - # is it possible to apply conv_in and conv_out? - UNET_TARGET_REPLACE_MODULE = ["Transformer2DModel", "Attention"] - UNET_TARGET_REPLACE_MODULE_CONV2D_3X3 = ["ResnetBlock2D", "Downsample2D", "Upsample2D"] - TEXT_ENCODER_TARGET_REPLACE_MODULE = ["CLIPAttention", "CLIPMLP"] - LORA_PREFIX_UNET = 'lora_unet' - LORA_PREFIX_TEXT_ENCODER = 'lora_te' + # is it possible to apply conv_in and conv_out? + UNET_TARGET_REPLACE_MODULE = ["Transformer2DModel", "Attention"] + UNET_TARGET_REPLACE_MODULE_CONV2D_3X3 = ["ResnetBlock2D", "Downsample2D", "Upsample2D"] + TEXT_ENCODER_TARGET_REPLACE_MODULE = ["CLIPAttention", "CLIPMLP"] + LORA_PREFIX_UNET = "lora_unet" + LORA_PREFIX_TEXT_ENCODER = "lora_te" - def __init__(self, text_encoder, unet, multiplier=1.0, lora_dim=4, alpha=1, conv_lora_dim=None, conv_alpha=None, modules_dim=None, modules_alpha=None) -> None: - super().__init__() - self.multiplier = multiplier + def __init__( + self, + text_encoder, + unet, + multiplier=1.0, + lora_dim=4, + alpha=1, + conv_lora_dim=None, + conv_alpha=None, + modules_dim=None, + modules_alpha=None, + ) -> None: + super().__init__() + self.multiplier = multiplier - self.lora_dim = lora_dim - self.alpha = alpha - self.conv_lora_dim = conv_lora_dim - self.conv_alpha = conv_alpha + self.lora_dim = lora_dim + self.alpha = alpha + self.conv_lora_dim = conv_lora_dim + self.conv_alpha = conv_alpha - if modules_dim is not None: - print(f"create LoRA network from weights") - else: - print(f"create LoRA network. base dim (rank): {lora_dim}, alpha: {alpha}") + if modules_dim is not None: + print(f"create LoRA network from weights") + else: + print(f"create LoRA network. base dim (rank): {lora_dim}, alpha: {alpha}") - self.apply_to_conv2d_3x3 = self.conv_lora_dim is not None - if self.apply_to_conv2d_3x3: - if self.conv_alpha is None: - self.conv_alpha = self.alpha - print(f"apply LoRA to Conv2d with kernel size (3,3). dim (rank): {self.conv_lora_dim}, alpha: {self.conv_alpha}") + self.apply_to_conv2d_3x3 = self.conv_lora_dim is not None + if self.apply_to_conv2d_3x3: + if self.conv_alpha is None: + self.conv_alpha = self.alpha + print(f"apply LoRA to Conv2d with kernel size (3,3). dim (rank): {self.conv_lora_dim}, alpha: {self.conv_alpha}") - # create module instances - def create_modules(prefix, root_module: torch.nn.Module, target_replace_modules) -> List[LoRAModule]: - loras = [] - for name, module in root_module.named_modules(): - if module.__class__.__name__ in target_replace_modules: - # TODO get block index here - for child_name, child_module in module.named_modules(): - is_linear = child_module.__class__.__name__ == "Linear" - is_conv2d = child_module.__class__.__name__ == "Conv2d" - is_conv2d_1x1 = is_conv2d and child_module.kernel_size == (1, 1) - if is_linear or is_conv2d: - lora_name = prefix + '.' + name + '.' + child_name - lora_name = lora_name.replace('.', '_') + # create module instances + def create_modules(prefix, root_module: torch.nn.Module, target_replace_modules) -> List[LoRAModule]: + loras = [] + for name, module in root_module.named_modules(): + if module.__class__.__name__ in target_replace_modules: + # TODO get block index here + for child_name, child_module in module.named_modules(): + is_linear = child_module.__class__.__name__ == "Linear" + is_conv2d = child_module.__class__.__name__ == "Conv2d" + is_conv2d_1x1 = is_conv2d and child_module.kernel_size == (1, 1) + if is_linear or is_conv2d: + lora_name = prefix + "." + name + "." + child_name + lora_name = lora_name.replace(".", "_") - if modules_dim is not None: - if lora_name not in modules_dim: - continue # no LoRA module in this weights file - dim = modules_dim[lora_name] - alpha = modules_alpha[lora_name] - else: - if is_linear or is_conv2d_1x1: - dim = self.lora_dim - alpha = self.alpha - elif self.apply_to_conv2d_3x3: - dim = self.conv_lora_dim - alpha = self.conv_alpha - else: - continue + if modules_dim is not None: + if lora_name not in modules_dim: + continue # no LoRA module in this weights file + dim = modules_dim[lora_name] + alpha = modules_alpha[lora_name] + else: + if is_linear or is_conv2d_1x1: + dim = self.lora_dim + alpha = self.alpha + elif self.apply_to_conv2d_3x3: + dim = self.conv_lora_dim + alpha = self.conv_alpha + else: + continue - lora = LoRAModule(lora_name, child_module, self.multiplier, dim, alpha) - loras.append(lora) - return loras + lora = LoRAModule(lora_name, child_module, self.multiplier, dim, alpha) + loras.append(lora) + return loras - self.text_encoder_loras = create_modules(LoRANetwork.LORA_PREFIX_TEXT_ENCODER, - text_encoder, LoRANetwork.TEXT_ENCODER_TARGET_REPLACE_MODULE) - print(f"create LoRA for Text Encoder: {len(self.text_encoder_loras)} modules.") + self.text_encoder_loras = create_modules( + LoRANetwork.LORA_PREFIX_TEXT_ENCODER, text_encoder, LoRANetwork.TEXT_ENCODER_TARGET_REPLACE_MODULE + ) + print(f"create LoRA for Text Encoder: {len(self.text_encoder_loras)} modules.") - # extend U-Net target modules if conv2d 3x3 is enabled, or load from weights - target_modules = LoRANetwork.UNET_TARGET_REPLACE_MODULE - if modules_dim is not None or self.conv_lora_dim is not None: - target_modules += LoRANetwork.UNET_TARGET_REPLACE_MODULE_CONV2D_3X3 + # extend U-Net target modules if conv2d 3x3 is enabled, or load from weights + target_modules = LoRANetwork.UNET_TARGET_REPLACE_MODULE + if modules_dim is not None or self.conv_lora_dim is not None: + target_modules += LoRANetwork.UNET_TARGET_REPLACE_MODULE_CONV2D_3X3 - self.unet_loras = create_modules(LoRANetwork.LORA_PREFIX_UNET, unet, target_modules) - print(f"create LoRA for U-Net: {len(self.unet_loras)} modules.") + self.unet_loras = create_modules(LoRANetwork.LORA_PREFIX_UNET, unet, target_modules) + print(f"create LoRA for U-Net: {len(self.unet_loras)} modules.") - self.weights_sd = None + self.weights_sd = None - # assertion - names = set() - for lora in self.text_encoder_loras + self.unet_loras: - assert lora.lora_name not in names, f"duplicated lora name: {lora.lora_name}" - names.add(lora.lora_name) + # assertion + names = set() + for lora in self.text_encoder_loras + self.unet_loras: + assert lora.lora_name not in names, f"duplicated lora name: {lora.lora_name}" + names.add(lora.lora_name) - def set_multiplier(self, multiplier): - self.multiplier = multiplier - for lora in self.text_encoder_loras + self.unet_loras: - lora.multiplier = self.multiplier + def set_multiplier(self, multiplier): + self.multiplier = multiplier + for lora in self.text_encoder_loras + self.unet_loras: + lora.multiplier = self.multiplier - def load_weights(self, file): - if os.path.splitext(file)[1] == '.safetensors': - from safetensors.torch import load_file, safe_open - self.weights_sd = load_file(file) - else: - self.weights_sd = torch.load(file, map_location='cpu') + def load_weights(self, file): + if os.path.splitext(file)[1] == ".safetensors": + from safetensors.torch import load_file, safe_open - def apply_to(self, text_encoder, unet, apply_text_encoder=None, apply_unet=None): - if self.weights_sd: - weights_has_text_encoder = weights_has_unet = False - for key in self.weights_sd.keys(): - if key.startswith(LoRANetwork.LORA_PREFIX_TEXT_ENCODER): - weights_has_text_encoder = True - elif key.startswith(LoRANetwork.LORA_PREFIX_UNET): - weights_has_unet = True + self.weights_sd = load_file(file) + else: + self.weights_sd = torch.load(file, map_location="cpu") - if apply_text_encoder is None: - apply_text_encoder = weights_has_text_encoder - else: - assert apply_text_encoder == weights_has_text_encoder, f"text encoder weights: {weights_has_text_encoder} but text encoder flag: {apply_text_encoder} / 重みとText Encoderのフラグが矛盾しています" + def apply_to(self, text_encoder, unet, apply_text_encoder=None, apply_unet=None): + if self.weights_sd: + weights_has_text_encoder = weights_has_unet = False + for key in self.weights_sd.keys(): + if key.startswith(LoRANetwork.LORA_PREFIX_TEXT_ENCODER): + weights_has_text_encoder = True + elif key.startswith(LoRANetwork.LORA_PREFIX_UNET): + weights_has_unet = True - if apply_unet is None: - apply_unet = weights_has_unet - else: - assert apply_unet == weights_has_unet, f"u-net weights: {weights_has_unet} but u-net flag: {apply_unet} / 重みとU-Netのフラグが矛盾しています" - else: - assert apply_text_encoder is not None and apply_unet is not None, f"internal error: flag not set" + if apply_text_encoder is None: + apply_text_encoder = weights_has_text_encoder + else: + assert ( + apply_text_encoder == weights_has_text_encoder + ), f"text encoder weights: {weights_has_text_encoder} but text encoder flag: {apply_text_encoder} / 重みとText Encoderのフラグが矛盾しています" - if apply_text_encoder: - print("enable LoRA for text encoder") - else: - self.text_encoder_loras = [] + if apply_unet is None: + apply_unet = weights_has_unet + else: + assert ( + apply_unet == weights_has_unet + ), f"u-net weights: {weights_has_unet} but u-net flag: {apply_unet} / 重みとU-Netのフラグが矛盾しています" + else: + assert apply_text_encoder is not None and apply_unet is not None, f"internal error: flag not set" - if apply_unet: - print("enable LoRA for U-Net") - else: - self.unet_loras = [] + if apply_text_encoder: + print("enable LoRA for text encoder") + else: + self.text_encoder_loras = [] - for lora in self.text_encoder_loras + self.unet_loras: - lora.apply_to() - self.add_module(lora.lora_name, lora) + if apply_unet: + print("enable LoRA for U-Net") + else: + self.unet_loras = [] - if self.weights_sd: - # if some weights are not in state dict, it is ok because initial LoRA does nothing (lora_up is initialized by zeros) - info = self.load_state_dict(self.weights_sd, False) - print(f"weights are loaded: {info}") + for lora in self.text_encoder_loras + self.unet_loras: + lora.apply_to() + self.add_module(lora.lora_name, lora) - def enable_gradient_checkpointing(self): - # not supported - pass + if self.weights_sd: + # if some weights are not in state dict, it is ok because initial LoRA does nothing (lora_up is initialized by zeros) + info = self.load_state_dict(self.weights_sd, False) + print(f"weights are loaded: {info}") - def prepare_optimizer_params(self, text_encoder_lr, unet_lr): - def enumerate_params(loras): - params = [] - for lora in loras: - params.extend(lora.parameters()) - return params + # TODO refactor to common function with apply_to + def merge_to(self, text_encoder, unet, dtype, device): + assert self.weights_sd is not None, "weights are not loaded" - self.requires_grad_(True) - all_params = [] + apply_text_encoder = apply_unet = False + for key in self.weights_sd.keys(): + if key.startswith(LoRANetwork.LORA_PREFIX_TEXT_ENCODER): + apply_text_encoder = True + elif key.startswith(LoRANetwork.LORA_PREFIX_UNET): + apply_unet = True - if self.text_encoder_loras: - param_data = {'params': enumerate_params(self.text_encoder_loras)} - if text_encoder_lr is not None: - param_data['lr'] = text_encoder_lr - all_params.append(param_data) + if apply_text_encoder: + print("enable LoRA for text encoder") + else: + self.text_encoder_loras = [] - if self.unet_loras: - param_data = {'params': enumerate_params(self.unet_loras)} - if unet_lr is not None: - param_data['lr'] = unet_lr - all_params.append(param_data) + if apply_unet: + print("enable LoRA for U-Net") + else: + self.unet_loras = [] - return all_params + for lora in self.text_encoder_loras + self.unet_loras: + sd_for_lora = {} + for key in self.weights_sd.keys(): + if key.startswith(lora.lora_name): + sd_for_lora[key[len(lora.lora_name) + 1 :]] = self.weights_sd[key] + lora.merge_to(sd_for_lora, dtype, device) + print(f"weights are merged") - def prepare_grad_etc(self, text_encoder, unet): - self.requires_grad_(True) + def enable_gradient_checkpointing(self): + # not supported + pass - def on_epoch_start(self, text_encoder, unet): - self.train() + def prepare_optimizer_params(self, text_encoder_lr, unet_lr): + def enumerate_params(loras): + params = [] + for lora in loras: + params.extend(lora.parameters()) + return params - def get_trainable_params(self): - return self.parameters() + self.requires_grad_(True) + all_params = [] - def save_weights(self, file, dtype, metadata): - if metadata is not None and len(metadata) == 0: - metadata = None + if self.text_encoder_loras: + param_data = {"params": enumerate_params(self.text_encoder_loras)} + if text_encoder_lr is not None: + param_data["lr"] = text_encoder_lr + all_params.append(param_data) - state_dict = self.state_dict() + if self.unet_loras: + param_data = {"params": enumerate_params(self.unet_loras)} + if unet_lr is not None: + param_data["lr"] = unet_lr + all_params.append(param_data) - if dtype is not None: - for key in list(state_dict.keys()): - v = state_dict[key] - v = v.detach().clone().to("cpu").to(dtype) - state_dict[key] = v + return all_params - if os.path.splitext(file)[1] == '.safetensors': - from safetensors.torch import save_file + def prepare_grad_etc(self, text_encoder, unet): + self.requires_grad_(True) - # Precalculate model hashes to save time on indexing - if metadata is None: - metadata = {} - model_hash, legacy_hash = train_util.precalculate_safetensors_hashes(state_dict, metadata) - metadata["sshs_model_hash"] = model_hash - metadata["sshs_legacy_hash"] = legacy_hash + def on_epoch_start(self, text_encoder, unet): + self.train() - save_file(state_dict, file, metadata) - else: - torch.save(state_dict, file) + def get_trainable_params(self): + return self.parameters() - @ staticmethod - def set_regions(networks, image): - image = image.astype(np.float32) / 255.0 - for i, network in enumerate(networks[:3]): - # NOTE: consider averaging overwrapping area - region = image[:, :, i] - if region.max() == 0: - continue - region = torch.tensor(region) - network.set_region(region) + def save_weights(self, file, dtype, metadata): + if metadata is not None and len(metadata) == 0: + metadata = None - def set_region(self, region): - for lora in self.unet_loras: - lora.set_region(region) + state_dict = self.state_dict() + + if dtype is not None: + for key in list(state_dict.keys()): + v = state_dict[key] + v = v.detach().clone().to("cpu").to(dtype) + state_dict[key] = v + + if os.path.splitext(file)[1] == ".safetensors": + from safetensors.torch import save_file + + # Precalculate model hashes to save time on indexing + if metadata is None: + metadata = {} + model_hash, legacy_hash = train_util.precalculate_safetensors_hashes(state_dict, metadata) + metadata["sshs_model_hash"] = model_hash + metadata["sshs_legacy_hash"] = legacy_hash + + save_file(state_dict, file, metadata) + else: + torch.save(state_dict, file) + + @staticmethod + def set_regions(networks, image): + image = image.astype(np.float32) / 255.0 + for i, network in enumerate(networks[:3]): + # NOTE: consider averaging overwrapping area + region = image[:, :, i] + if region.max() == 0: + continue + region = torch.tensor(region) + network.set_region(region) + + def set_region(self, region): + for lora in self.unet_loras: + lora.set_region(region) diff --git a/networks/merge_lora.py b/networks/merge_lora.py index 8d97392..2fa8861 100644 --- a/networks/merge_lora.py +++ b/networks/merge_lora.py @@ -1,4 +1,3 @@ - import math import argparse import os @@ -9,216 +8,236 @@ import lora def load_state_dict(file_name, dtype): - if os.path.splitext(file_name)[1] == '.safetensors': - sd = load_file(file_name) - else: - sd = torch.load(file_name, map_location='cpu') - for key in list(sd.keys()): - if type(sd[key]) == torch.Tensor: - sd[key] = sd[key].to(dtype) - return sd + if os.path.splitext(file_name)[1] == ".safetensors": + sd = load_file(file_name) + else: + sd = torch.load(file_name, map_location="cpu") + for key in list(sd.keys()): + if type(sd[key]) == torch.Tensor: + sd[key] = sd[key].to(dtype) + return sd def save_to_file(file_name, model, state_dict, dtype): - if dtype is not None: - for key in list(state_dict.keys()): - if type(state_dict[key]) == torch.Tensor: - state_dict[key] = state_dict[key].to(dtype) + if dtype is not None: + for key in list(state_dict.keys()): + if type(state_dict[key]) == torch.Tensor: + state_dict[key] = state_dict[key].to(dtype) - if os.path.splitext(file_name)[1] == '.safetensors': - save_file(model, file_name) - else: - torch.save(model, file_name) + if os.path.splitext(file_name)[1] == ".safetensors": + save_file(model, file_name) + else: + torch.save(model, file_name) def merge_to_sd_model(text_encoder, unet, models, ratios, merge_dtype): - text_encoder.to(merge_dtype) - unet.to(merge_dtype) + text_encoder.to(merge_dtype) + unet.to(merge_dtype) - # create module map - name_to_module = {} - for i, root_module in enumerate([text_encoder, unet]): - if i == 0: - prefix = lora.LoRANetwork.LORA_PREFIX_TEXT_ENCODER - target_replace_modules = lora.LoRANetwork.TEXT_ENCODER_TARGET_REPLACE_MODULE - else: - prefix = lora.LoRANetwork.LORA_PREFIX_UNET - target_replace_modules = lora.LoRANetwork.UNET_TARGET_REPLACE_MODULE - - for name, module in root_module.named_modules(): - if module.__class__.__name__ in target_replace_modules: - for child_name, child_module in module.named_modules(): - if child_module.__class__.__name__ == "Linear" or child_module.__class__.__name__ == "Conv2d": - lora_name = prefix + '.' + name + '.' + child_name - lora_name = lora_name.replace('.', '_') - name_to_module[lora_name] = child_module - - for model, ratio in zip(models, ratios): - print(f"loading: {model}") - lora_sd = load_state_dict(model, merge_dtype) - - print(f"merging...") - for key in lora_sd.keys(): - if "lora_down" in key: - up_key = key.replace("lora_down", "lora_up") - alpha_key = key[:key.index("lora_down")] + 'alpha' - - # find original module for this lora - module_name = '.'.join(key.split('.')[:-2]) # remove trailing ".lora_down.weight" - if module_name not in name_to_module: - print(f"no module found for LoRA weight: {key}") - continue - module = name_to_module[module_name] - # print(f"apply {key} to {module}") - - down_weight = lora_sd[key] - up_weight = lora_sd[up_key] - - dim = down_weight.size()[0] - alpha = lora_sd.get(alpha_key, dim) - scale = alpha / dim - - # W <- W + U * D - weight = module.weight - # print(module_name, down_weight.size(), up_weight.size()) - if len(weight.size()) == 2: - # linear - weight = weight + ratio * (up_weight @ down_weight) * scale - elif down_weight.size()[2:4] == (1, 1): - # conv2d 1x1 - weight = weight + ratio * (up_weight.squeeze(3).squeeze(2) @ down_weight.squeeze(3).squeeze(2) - ).unsqueeze(2).unsqueeze(3) * scale + # create module map + name_to_module = {} + for i, root_module in enumerate([text_encoder, unet]): + if i == 0: + prefix = lora.LoRANetwork.LORA_PREFIX_TEXT_ENCODER + target_replace_modules = lora.LoRANetwork.TEXT_ENCODER_TARGET_REPLACE_MODULE else: - # conv2d 3x3 - conved = torch.nn.functional.conv2d(down_weight.permute(1, 0, 2, 3), up_weight).permute(1, 0, 2, 3) - # print(conved.size(), weight.size(), module.stride, module.padding) - weight = weight + ratio * conved * scale + prefix = lora.LoRANetwork.LORA_PREFIX_UNET + target_replace_modules = ( + lora.LoRANetwork.UNET_TARGET_REPLACE_MODULE + lora.LoRANetwork.UNET_TARGET_REPLACE_MODULE_CONV2D_3X3 + ) - module.weight = torch.nn.Parameter(weight) + for name, module in root_module.named_modules(): + if module.__class__.__name__ in target_replace_modules: + for child_name, child_module in module.named_modules(): + if child_module.__class__.__name__ == "Linear" or child_module.__class__.__name__ == "Conv2d": + lora_name = prefix + "." + name + "." + child_name + lora_name = lora_name.replace(".", "_") + name_to_module[lora_name] = child_module + + for model, ratio in zip(models, ratios): + print(f"loading: {model}") + lora_sd = load_state_dict(model, merge_dtype) + + print(f"merging...") + for key in lora_sd.keys(): + if "lora_down" in key: + up_key = key.replace("lora_down", "lora_up") + alpha_key = key[: key.index("lora_down")] + "alpha" + + # find original module for this lora + module_name = ".".join(key.split(".")[:-2]) # remove trailing ".lora_down.weight" + if module_name not in name_to_module: + print(f"no module found for LoRA weight: {key}") + continue + module = name_to_module[module_name] + # print(f"apply {key} to {module}") + + down_weight = lora_sd[key] + up_weight = lora_sd[up_key] + + dim = down_weight.size()[0] + alpha = lora_sd.get(alpha_key, dim) + scale = alpha / dim + + # W <- W + U * D + weight = module.weight + # print(module_name, down_weight.size(), up_weight.size()) + if len(weight.size()) == 2: + # linear + weight = weight + ratio * (up_weight @ down_weight) * scale + elif down_weight.size()[2:4] == (1, 1): + # conv2d 1x1 + weight = ( + weight + + ratio + * (up_weight.squeeze(3).squeeze(2) @ down_weight.squeeze(3).squeeze(2)).unsqueeze(2).unsqueeze(3) + * scale + ) + else: + # conv2d 3x3 + conved = torch.nn.functional.conv2d(down_weight.permute(1, 0, 2, 3), up_weight).permute(1, 0, 2, 3) + # print(conved.size(), weight.size(), module.stride, module.padding) + weight = weight + ratio * conved * scale + + module.weight = torch.nn.Parameter(weight) def merge_lora_models(models, ratios, merge_dtype): - base_alphas = {} # alpha for merged model - base_dims = {} + base_alphas = {} # alpha for merged model + base_dims = {} - merged_sd = {} - for model, ratio in zip(models, ratios): - print(f"loading: {model}") - lora_sd = load_state_dict(model, merge_dtype) + merged_sd = {} + for model, ratio in zip(models, ratios): + print(f"loading: {model}") + lora_sd = load_state_dict(model, merge_dtype) - # get alpha and dim - alphas = {} # alpha for current model - dims = {} # dims for current model - for key in lora_sd.keys(): - if 'alpha' in key: - lora_module_name = key[:key.rfind(".alpha")] - alpha = float(lora_sd[key].detach().numpy()) - alphas[lora_module_name] = alpha - if lora_module_name not in base_alphas: - base_alphas[lora_module_name] = alpha - elif "lora_down" in key: - lora_module_name = key[:key.rfind(".lora_down")] - dim = lora_sd[key].size()[0] - dims[lora_module_name] = dim - if lora_module_name not in base_dims: - base_dims[lora_module_name] = dim + # get alpha and dim + alphas = {} # alpha for current model + dims = {} # dims for current model + for key in lora_sd.keys(): + if "alpha" in key: + lora_module_name = key[: key.rfind(".alpha")] + alpha = float(lora_sd[key].detach().numpy()) + alphas[lora_module_name] = alpha + if lora_module_name not in base_alphas: + base_alphas[lora_module_name] = alpha + elif "lora_down" in key: + lora_module_name = key[: key.rfind(".lora_down")] + dim = lora_sd[key].size()[0] + dims[lora_module_name] = dim + if lora_module_name not in base_dims: + base_dims[lora_module_name] = dim - for lora_module_name in dims.keys(): - if lora_module_name not in alphas: - alpha = dims[lora_module_name] - alphas[lora_module_name] = alpha - if lora_module_name not in base_alphas: - base_alphas[lora_module_name] = alpha + for lora_module_name in dims.keys(): + if lora_module_name not in alphas: + alpha = dims[lora_module_name] + alphas[lora_module_name] = alpha + if lora_module_name not in base_alphas: + base_alphas[lora_module_name] = alpha - print(f"dim: {list(set(dims.values()))}, alpha: {list(set(alphas.values()))}") + print(f"dim: {list(set(dims.values()))}, alpha: {list(set(alphas.values()))}") - # merge - print(f"merging...") - for key in lora_sd.keys(): - if 'alpha' in key: - continue + # merge + print(f"merging...") + for key in lora_sd.keys(): + if "alpha" in key: + continue - lora_module_name = key[:key.rfind(".lora_")] + lora_module_name = key[: key.rfind(".lora_")] - base_alpha = base_alphas[lora_module_name] - alpha = alphas[lora_module_name] + base_alpha = base_alphas[lora_module_name] + alpha = alphas[lora_module_name] - scale = math.sqrt(alpha / base_alpha) * ratio + scale = math.sqrt(alpha / base_alpha) * ratio - if key in merged_sd: - assert merged_sd[key].size() == lora_sd[key].size( - ), f"weights shape mismatch merging v1 and v2, different dims? / 重みのサイズが合いません。v1とv2、または次元数の異なるモデルはマージできません" - merged_sd[key] = merged_sd[key] + lora_sd[key] * scale - else: - merged_sd[key] = lora_sd[key] * scale + if key in merged_sd: + assert ( + merged_sd[key].size() == lora_sd[key].size() + ), f"weights shape mismatch merging v1 and v2, different dims? / 重みのサイズが合いません。v1とv2、または次元数の異なるモデルはマージできません" + merged_sd[key] = merged_sd[key] + lora_sd[key] * scale + else: + merged_sd[key] = lora_sd[key] * scale - # set alpha to sd - for lora_module_name, alpha in base_alphas.items(): - key = lora_module_name + ".alpha" - merged_sd[key] = torch.tensor(alpha) + # set alpha to sd + for lora_module_name, alpha in base_alphas.items(): + key = lora_module_name + ".alpha" + merged_sd[key] = torch.tensor(alpha) - print("merged model") - print(f"dim: {list(set(base_dims.values()))}, alpha: {list(set(base_alphas.values()))}") + print("merged model") + print(f"dim: {list(set(base_dims.values()))}, alpha: {list(set(base_alphas.values()))}") - return merged_sd + return merged_sd def merge(args): - assert len(args.models) == len(args.ratios), f"number of models must be equal to number of ratios / モデルの数と重みの数は合わせてください" + assert len(args.models) == len(args.ratios), f"number of models must be equal to number of ratios / モデルの数と重みの数は合わせてください" - def str_to_dtype(p): - if p == 'float': - return torch.float - if p == 'fp16': - return torch.float16 - if p == 'bf16': - return torch.bfloat16 - return None + def str_to_dtype(p): + if p == "float": + return torch.float + if p == "fp16": + return torch.float16 + if p == "bf16": + return torch.bfloat16 + return None - merge_dtype = str_to_dtype(args.precision) - save_dtype = str_to_dtype(args.save_precision) - if save_dtype is None: - save_dtype = merge_dtype + merge_dtype = str_to_dtype(args.precision) + save_dtype = str_to_dtype(args.save_precision) + if save_dtype is None: + save_dtype = merge_dtype - if args.sd_model is not None: - print(f"loading SD model: {args.sd_model}") + if args.sd_model is not None: + print(f"loading SD model: {args.sd_model}") - text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(args.v2, args.sd_model) + text_encoder, vae, unet = model_util.load_models_from_stable_diffusion_checkpoint(args.v2, args.sd_model) - merge_to_sd_model(text_encoder, unet, args.models, args.ratios, merge_dtype) + merge_to_sd_model(text_encoder, unet, args.models, args.ratios, merge_dtype) - print(f"saving SD model to: {args.save_to}") - model_util.save_stable_diffusion_checkpoint(args.v2, args.save_to, text_encoder, unet, - args.sd_model, 0, 0, save_dtype, vae) - else: - state_dict = merge_lora_models(args.models, args.ratios, merge_dtype) + print(f"saving SD model to: {args.save_to}") + model_util.save_stable_diffusion_checkpoint(args.v2, args.save_to, text_encoder, unet, args.sd_model, 0, 0, save_dtype, vae) + else: + state_dict = merge_lora_models(args.models, args.ratios, merge_dtype) - print(f"saving model to: {args.save_to}") - save_to_file(args.save_to, state_dict, state_dict, save_dtype) + print(f"saving model to: {args.save_to}") + save_to_file(args.save_to, state_dict, state_dict, save_dtype) def setup_parser() -> argparse.ArgumentParser: - parser = argparse.ArgumentParser() - parser.add_argument("--v2", action='store_true', - help='load Stable Diffusion v2.x model / Stable Diffusion 2.xのモデルを読み込む') - parser.add_argument("--save_precision", type=str, default=None, - choices=[None, "float", "fp16", "bf16"], help="precision in saving, same to merging if omitted / 保存時に精度を変更して保存する、省略時はマージ時の精度と同じ") - parser.add_argument("--precision", type=str, default="float", - choices=["float", "fp16", "bf16"], help="precision in merging (float is recommended) / マージの計算時の精度（floatを推奨）") - parser.add_argument("--sd_model", type=str, default=None, - help="Stable Diffusion model to load: ckpt or safetensors file, merge LoRA models if omitted / 読み込むモデル、ckptまたはsafetensors。省略時はLoRAモデル同士をマージする") - parser.add_argument("--save_to", type=str, default=None, - help="destination file name: ckpt or safetensors file / 保存先のファイル名、ckptまたはsafetensors") - parser.add_argument("--models", type=str, nargs='*', - help="LoRA models to merge: ckpt or safetensors file / マージするLoRAモデル、ckptまたはsafetensors") - parser.add_argument("--ratios", type=float, nargs='*', - help="ratios for each model / それぞれのLoRAモデルの比率") + parser = argparse.ArgumentParser() + parser.add_argument("--v2", action="store_true", help="load Stable Diffusion v2.x model / Stable Diffusion 2.xのモデルを読み込む") + parser.add_argument( + "--save_precision", + type=str, + default=None, + choices=[None, "float", "fp16", "bf16"], + help="precision in saving, same to merging if omitted / 保存時に精度を変更して保存する、省略時はマージ時の精度と同じ", + ) + parser.add_argument( + "--precision", + type=str, + default="float", + choices=["float", "fp16", "bf16"], + help="precision in merging (float is recommended) / マージの計算時の精度（floatを推奨）", + ) + parser.add_argument( + "--sd_model", + type=str, + default=None, + help="Stable Diffusion model to load: ckpt or safetensors file, merge LoRA models if omitted / 読み込むモデル、ckptまたはsafetensors。省略時はLoRAモデル同士をマージする", + ) + parser.add_argument( + "--save_to", type=str, default=None, help="destination file name: ckpt or safetensors file / 保存先のファイル名、ckptまたはsafetensors" + ) + parser.add_argument( + "--models", type=str, nargs="*", help="LoRA models to merge: ckpt or safetensors file / マージするLoRAモデル、ckptまたはsafetensors" + ) + parser.add_argument("--ratios", type=float, nargs="*", help="ratios for each model / それぞれのLoRAモデルの比率") - return parser + return parser -if __name__ == '__main__': - parser = setup_parser() +if __name__ == "__main__": + parser = setup_parser() - args = parser.parse_args() - merge(args) + args = parser.parse_args() + merge(args) diff --git a/tools/merge_lycoris.py b/tools/merge_lycoris.py new file mode 100644 index 0000000..570fa2b --- /dev/null +++ b/tools/merge_lycoris.py @@ -0,0 +1,80 @@ +import os +import sys +import argparse +import torch +from lycoris.utils import merge_loha, merge_locon +from lycoris.kohya_model_utils import ( + load_models_from_stable_diffusion_checkpoint, + save_stable_diffusion_checkpoint, + load_file +) +import gradio as gr + + +def merge_models(base_model, lycoris_model, output_name, is_v2, device, dtype, weight): + base = load_models_from_stable_diffusion_checkpoint(is_v2, base_model) + if lycoris_model.rsplit('.', 1)[-1] == 'safetensors': + lyco = load_file(lycoris_model) + else: + lyco = torch.load(lycoris_model) + + algo = None + for key in lyco: + if 'hada' in key: + algo = 'loha' + break + elif 'lora_up' in key: + algo = 'lora' + break + else: + raise NotImplementedError('Cannot find the algo for this lycoris model file.') + + dtype_str = dtype.replace('fp', 'float').replace('bf', 'bfloat') + dtype = { + 'float': torch.float, + 'float16': torch.float16, + 'float32': torch.float32, + 'float64': torch.float64, + 'bfloat': torch.bfloat16, + 'bfloat16': torch.bfloat16, + }.get(dtype_str, None) + if dtype is None: + raise ValueError(f'Cannot Find the dtype "{dtype}"') + + if algo == 'loha': + merge_loha(base, lyco, weight, device) + elif algo == 'lora': + merge_locon(base, lyco, weight, device) + + save_stable_diffusion_checkpoint( + is_v2, output_name, + base[0], base[2], + None, 0, 0, dtype, + base[1] + ) + + return output_name + + +def main(): + iface = gr.Interface( + fn=merge_models, + inputs=[ + gr.inputs.Textbox(label="Base Model Path"), + gr.inputs.Textbox(label="Lycoris Model Path"), + gr.inputs.Textbox(label="Output Model Path", default='./out.pt'), + gr.inputs.Checkbox(label="Is base model SD V2?", default=False), + gr.inputs.Textbox(label="Device", default='cpu'), + gr.inputs.Dropdown(choices=['float', 'float16', 'float32', 'float64', 'bfloat', 'bfloat16'], label="Dtype", default='float'), + gr.inputs.Number(label="Weight", default=1.0) + ], + outputs=gr.outputs.Textbox(label="Merged Model Path"), + title="Model Merger", + description="Merge Lycoris and Stable Diffusion models", + ) + + iface.launch() + + +if __name__ == '__main__': + main() diff --git a/train_network.py b/train_network.py index 423649e..476f76d 100644 --- a/train_network.py +++ b/train_network.py @@ -25,7 +25,7 @@ from library.config_util import ( BlueprintGenerator, ) import library.custom_train_functions as custom_train_functions -from library.custom_train_functions import apply_snr_weight +from library.custom_train_functions import apply_snr_weight # TODO 他のスクリプトと共通化する @@ -127,12 +127,25 @@ def train(args): weight_dtype, save_dtype = train_util.prepare_dtype(args) # モデルを読み込む - text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype) + for pi in range(accelerator.state.num_processes): + # TODO: modify other training scripts as well + if pi == accelerator.state.local_process_index: + print(f"loading model for process {accelerator.state.local_process_index}/{accelerator.state.num_processes}") + + text_encoder, vae, unet, _ = train_util.load_target_model( + args, weight_dtype, accelerator.device if args.lowram else "cpu" + ) + + # work on low-ram device + if args.lowram: + text_encoder.to(accelerator.device) + unet.to(accelerator.device) + vae.to(accelerator.device) + + gc.collect() + torch.cuda.empty_cache() + accelerator.wait_for_everyone() - # work on low-ram device - if args.lowram: - text_encoder.to("cuda") - unet.to("cuda") # モデルに xformers とか memory efficient attention を組み込む train_util.replace_unet_modules(unet, args.mem_eff_attn, args.xformers) @@ -189,7 +202,7 @@ def train(args): # dataloaderを準備する # DataLoaderのプロセス数：0はメインプロセスになる n_workers = min(args.max_data_loader_n_workers, os.cpu_count() - 1) # cpu_count-1 ただし最大で指定された数まで - + train_dataloader = torch.utils.data.DataLoader( train_dataset_group, batch_size=1, @@ -556,9 +569,9 @@ def train(args): loss_weights = batch["loss_weights"] # 各sampleごとのweight loss = loss * loss_weights - + if args.min_snr_gamma: - loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma) + loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma) loss = loss.mean() # 平均なのでbatch_sizeで割る必要なし diff --git a/train_textual_inversion_XTI.py b/train_textual_inversion_XTI.py new file mode 100644 index 0000000..74e9bc2 --- /dev/null +++ b/train_textual_inversion_XTI.py @@ -0,0 +1,644 @@ +import importlib +import argparse +import gc +import math +import os +import toml +from multiprocessing import Value + +from tqdm import tqdm +import torch +from accelerate.utils import set_seed +import diffusers +from diffusers import DDPMScheduler + +import library.train_util as train_util +import library.config_util as config_util +from library.config_util import ( + ConfigSanitizer, + BlueprintGenerator, +) +import library.custom_train_functions as custom_train_functions +from library.custom_train_functions import apply_snr_weight +from XTI_hijack import unet_forward_XTI, downblock_forward_XTI, upblock_forward_XTI + +imagenet_templates_small = [ + "a photo of a {}", + "a rendering of a {}", + "a cropped photo of the {}", + "the photo of a {}", + "a photo of a clean {}", + "a photo of a dirty {}", + "a dark photo of the {}", + "a photo of my {}", + "a photo of the cool {}", + "a close-up photo of a {}", + "a bright photo of the {}", + "a cropped photo of a {}", + "a photo of the {}", + "a good photo of the {}", + "a photo of one {}", + "a close-up photo of the {}", + "a rendition of the {}", + "a photo of the clean {}", + "a rendition of a {}", + "a photo of a nice {}", + "a good photo of a {}", + "a photo of the nice {}", + "a photo of the small {}", + "a photo of the weird {}", + "a photo of the large {}", + "a photo of a cool {}", + "a photo of a small {}", +] + +imagenet_style_templates_small = [ + "a painting in the style of {}", + "a rendering in the style of {}", + "a cropped painting in the style of {}", + "the painting in the style of {}", + "a clean painting in the style of {}", + "a dirty painting in the style of {}", + "a dark painting in the style of {}", + "a picture in the style of {}", + "a cool painting in the style of {}", + "a close-up painting in the style of {}", + "a bright painting in the style of {}", + "a cropped painting in the style of {}", + "a good painting in the style of {}", + "a close-up painting in the style of {}", + "a rendition in the style of {}", + "a nice painting in the style of {}", + "a small painting in the style of {}", + "a weird painting in the style of {}", + "a large painting in the style of {}", +] + + +def train(args): + if args.output_name is None: + args.output_name = args.token_string + use_template = args.use_object_template or args.use_style_template + + train_util.verify_training_args(args) + train_util.prepare_dataset_args(args, True) + + if args.sample_every_n_steps is not None or args.sample_every_n_epochs is not None: + print( + "sample_every_n_steps and sample_every_n_epochs are not supported in this script currently / sample_every_n_stepsとsample_every_n_epochsは現在このスクリプトではサポートされていません" + ) + + cache_latents = args.cache_latents + + if args.seed is not None: + set_seed(args.seed) + + tokenizer = train_util.load_tokenizer(args) + + # acceleratorを準備する + print("prepare accelerator") + accelerator, unwrap_model = train_util.prepare_accelerator(args) + + # mixed precisionに対応した型を用意しておき適宜castする + weight_dtype, save_dtype = train_util.prepare_dtype(args) + + # モデルを読み込む + text_encoder, vae, unet, _ = train_util.load_target_model(args, weight_dtype) + + # Convert the init_word to token_id + if args.init_word is not None: + init_token_ids = tokenizer.encode(args.init_word, add_special_tokens=False) + if len(init_token_ids) > 1 and len(init_token_ids) != args.num_vectors_per_token: + print( + f"token length for init words is not same to num_vectors_per_token, init words is repeated or truncated / 初期化単語のトークン長がnum_vectors_per_tokenと合わないため、繰り返しまたは切り捨てが発生します: length {len(init_token_ids)}" + ) + else: + init_token_ids = None + + # add new word to tokenizer, count is num_vectors_per_token + token_strings = [args.token_string] + [f"{args.token_string}{i+1}" for i in range(args.num_vectors_per_token - 1)] + num_added_tokens = tokenizer.add_tokens(token_strings) + assert ( + num_added_tokens == args.num_vectors_per_token + ), f"tokenizer has same word to token string. please use another one / 指定したargs.token_stringは既に存在します。別の単語を使ってください: {args.token_string}" + + token_ids = tokenizer.convert_tokens_to_ids(token_strings) + print(f"tokens are added: {token_ids}") + assert min(token_ids) == token_ids[0] and token_ids[-1] == token_ids[0] + len(token_ids) - 1, f"token ids is not ordered" + assert len(tokenizer) - 1 == token_ids[-1], f"token ids is not end of tokenize: {len(tokenizer)}" + + token_strings_XTI = [] + XTI_layers = [ + "IN01", + "IN02", + "IN04", + "IN05", + "IN07", + "IN08", + "MID", + "OUT03", + "OUT04", + "OUT05", + "OUT06", + "OUT07", + "OUT08", + "OUT09", + "OUT10", + "OUT11", + ] + for layer_name in XTI_layers: + token_strings_XTI += [f"{t}_{layer_name}" for t in token_strings] + + tokenizer.add_tokens(token_strings_XTI) + token_ids_XTI = tokenizer.convert_tokens_to_ids(token_strings_XTI) + print(f"tokens are added (XTI): {token_ids_XTI}") + # Resize the token embeddings as we are adding new special tokens to the tokenizer + text_encoder.resize_token_embeddings(len(tokenizer)) + + # Initialise the newly added placeholder token with the embeddings of the initializer token + token_embeds = text_encoder.get_input_embeddings().weight.data + if init_token_ids is not None: + for i, token_id in enumerate(token_ids_XTI): + token_embeds[token_id] = token_embeds[init_token_ids[(i // 16) % len(init_token_ids)]] + # print(token_id, token_embeds[token_id].mean(), token_embeds[token_id].min()) + + # load weights + if args.weights is not None: + embeddings = load_weights(args.weights) + assert len(token_ids) == len( + embeddings + ), f"num_vectors_per_token is mismatch for weights / 指定した重みとnum_vectors_per_tokenの値が異なります: {len(embeddings)}" + # print(token_ids, embeddings.size()) + for token_id, embedding in zip(token_ids_XTI, embeddings): + token_embeds[token_id] = embedding + # print(token_id, token_embeds[token_id].mean(), token_embeds[token_id].min()) + print(f"weighs loaded") + + print(f"create embeddings for {args.num_vectors_per_token} tokens, for {args.token_string}") + + # データセットを準備する + blueprint_generator = BlueprintGenerator(ConfigSanitizer(True, True, False)) + if args.dataset_config is not None: + print(f"Load dataset config from {args.dataset_config}") + user_config = config_util.load_user_config(args.dataset_config) + ignored = ["train_data_dir", "reg_data_dir", "in_json"] + if any(getattr(args, attr) is not None for attr in ignored): + print( + "ignore following options because config file is found: {0} / 設定ファイルが利用されるため以下のオプションは無視されます: {0}".format( + ", ".join(ignored) + ) + ) + else: + use_dreambooth_method = args.in_json is None + if use_dreambooth_method: + print("Use DreamBooth method.") + user_config = { + "datasets": [ + {"subsets": config_util.generate_dreambooth_subsets_config_by_subdirs(args.train_data_dir, args.reg_data_dir)} + ] + } + else: + print("Train with captions.") + user_config = { + "datasets": [ + { + "subsets": [ + { + "image_dir": args.train_data_dir, + "metadata_file": args.in_json, + } + ] + } + ] + } + + blueprint = blueprint_generator.generate(user_config, args, tokenizer=tokenizer) + train_dataset_group = config_util.generate_dataset_group_by_blueprint(blueprint.dataset_group) + train_dataset_group.enable_XTI(XTI_layers, token_strings=token_strings) + current_epoch = Value("i", 0) + current_step = Value("i", 0) + ds_for_collater = train_dataset_group if args.max_data_loader_n_workers == 0 else None + collater = train_util.collater_class(current_epoch, current_step, ds_for_collater) + + # make captions: tokenstring tokenstring1 tokenstring2 ...tokenstringn という文字列に書き換える超乱暴な実装 + if use_template: + print("use template for training captions. is object: {args.use_object_template}") + templates = imagenet_templates_small if args.use_object_template else imagenet_style_templates_small + replace_to = " ".join(token_strings) + captions = [] + for tmpl in templates: + captions.append(tmpl.format(replace_to)) + train_dataset_group.add_replacement("", captions) + + if args.num_vectors_per_token > 1: + prompt_replacement = (args.token_string, replace_to) + else: + prompt_replacement = None + else: + if args.num_vectors_per_token > 1: + replace_to = " ".join(token_strings) + train_dataset_group.add_replacement(args.token_string, replace_to) + prompt_replacement = (args.token_string, replace_to) + else: + prompt_replacement = None + + if args.debug_dataset: + train_util.debug_dataset(train_dataset_group, show_input_ids=True) + return + if len(train_dataset_group) == 0: + print("No data found. Please verify arguments / 画像がありません。引数指定を確認してください") + return + + if cache_latents: + assert ( + train_dataset_group.is_latent_cacheable() + ), "when caching latents, either color_aug or random_crop cannot be used / latentをキャッシュするときはcolor_augとrandom_cropは使えません" + + # モデルに xformers とか memory efficient attention を組み込む + train_util.replace_unet_modules(unet, args.mem_eff_attn, args.xformers) + diffusers.models.UNet2DConditionModel.forward = unet_forward_XTI + diffusers.models.unet_2d_blocks.CrossAttnDownBlock2D.forward = downblock_forward_XTI + diffusers.models.unet_2d_blocks.CrossAttnUpBlock2D.forward = upblock_forward_XTI + + # 学習を準備する + if cache_latents: + vae.to(accelerator.device, dtype=weight_dtype) + vae.requires_grad_(False) + vae.eval() + with torch.no_grad(): + train_dataset_group.cache_latents(vae, args.vae_batch_size) + vae.to("cpu") + if torch.cuda.is_available(): + torch.cuda.empty_cache() + gc.collect() + + if args.gradient_checkpointing: + unet.enable_gradient_checkpointing() + text_encoder.gradient_checkpointing_enable() + + # 学習に必要なクラスを準備する + print("prepare optimizer, data loader etc.") + trainable_params = text_encoder.get_input_embeddings().parameters() + _, _, optimizer = train_util.get_optimizer(args, trainable_params) + + # dataloaderを準備する + # DataLoaderのプロセス数：0はメインプロセスになる + n_workers = min(args.max_data_loader_n_workers, os.cpu_count() - 1) # cpu_count-1 ただし最大で指定された数まで + train_dataloader = torch.utils.data.DataLoader( + train_dataset_group, + batch_size=1, + shuffle=True, + collate_fn=collater, + num_workers=n_workers, + persistent_workers=args.persistent_data_loader_workers, + ) + + # 学習ステップ数を計算する + if args.max_train_epochs is not None: + args.max_train_steps = args.max_train_epochs * math.ceil( + len(train_dataloader) / accelerator.num_processes / args.gradient_accumulation_steps + ) + print(f"override steps. steps for {args.max_train_epochs} epochs is / 指定エポックまでのステップ数: {args.max_train_steps}") + + # データセット側にも学習ステップを送信 + train_dataset_group.set_max_train_steps(args.max_train_steps) + + # lr schedulerを用意する + lr_scheduler = train_util.get_scheduler_fix(args, optimizer, accelerator.num_processes) + + # acceleratorがなんかよろしくやってくれるらしい + text_encoder, optimizer, train_dataloader, lr_scheduler = accelerator.prepare( + text_encoder, optimizer, train_dataloader, lr_scheduler + ) + + index_no_updates = torch.arange(len(tokenizer)) < token_ids_XTI[0] + # print(len(index_no_updates), torch.sum(index_no_updates)) + orig_embeds_params = unwrap_model(text_encoder).get_input_embeddings().weight.data.detach().clone() + + # Freeze all parameters except for the token embeddings in text encoder + text_encoder.requires_grad_(True) + text_encoder.text_model.encoder.requires_grad_(False) + text_encoder.text_model.final_layer_norm.requires_grad_(False) + text_encoder.text_model.embeddings.position_embedding.requires_grad_(False) + # text_encoder.text_model.embeddings.token_embedding.requires_grad_(True) + + unet.requires_grad_(False) + unet.to(accelerator.device, dtype=weight_dtype) + if args.gradient_checkpointing: # according to TI example in Diffusers, train is required + unet.train() + else: + unet.eval() + + if not cache_latents: + vae.requires_grad_(False) + vae.eval() + vae.to(accelerator.device, dtype=weight_dtype) + + # 実験的機能：勾配も含めたfp16学習を行う　PyTorchにパッチを当ててfp16でのgrad scaleを有効にする + if args.full_fp16: + train_util.patch_accelerator_for_fp16_training(accelerator) + text_encoder.to(weight_dtype) + + # resumeする + if args.resume is not None: + print(f"resume training from state: {args.resume}") + accelerator.load_state(args.resume) + + # epoch数を計算する + num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps) + num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch) + if (args.save_n_epoch_ratio is not None) and (args.save_n_epoch_ratio > 0): + args.save_every_n_epochs = math.floor(num_train_epochs / args.save_n_epoch_ratio) or 1 + + # 学習する + total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps + print("running training / 学習開始") + print(f" num train images * repeats / 学習画像の数×繰り返し回数: {train_dataset_group.num_train_images}") + print(f" num reg images / 正則化画像の数: {train_dataset_group.num_reg_images}") + print(f" num batches per epoch / 1epochのバッチ数: {len(train_dataloader)}") + print(f" num epochs / epoch数: {num_train_epochs}") + print(f" batch size per device / バッチサイズ: {args.train_batch_size}") + print(f" total train batch size (with parallel & distributed & accumulation) / 総バッチサイズ（並列学習、勾配合計含む）: {total_batch_size}") + print(f" gradient ccumulation steps / 勾配を合計するステップ数 = {args.gradient_accumulation_steps}") + print(f" total optimization steps / 学習ステップ数: {args.max_train_steps}") + + progress_bar = tqdm(range(args.max_train_steps), smoothing=0, disable=not accelerator.is_local_main_process, desc="steps") + global_step = 0 + + noise_scheduler = DDPMScheduler( + beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear", num_train_timesteps=1000, clip_sample=False + ) + + if accelerator.is_main_process: + accelerator.init_trackers("textual_inversion") + + for epoch in range(num_train_epochs): + print(f"epoch {epoch+1}/{num_train_epochs}") + current_epoch.value = epoch + 1 + + text_encoder.train() + + loss_total = 0 + + for step, batch in enumerate(train_dataloader): + current_step.value = global_step + with accelerator.accumulate(text_encoder): + with torch.no_grad(): + if "latents" in batch and batch["latents"] is not None: + latents = batch["latents"].to(accelerator.device) + else: + # latentに変換 + latents = vae.encode(batch["images"].to(dtype=weight_dtype)).latent_dist.sample() + latents = latents * 0.18215 + b_size = latents.shape[0] + + # Get the text embedding for conditioning + input_ids = batch["input_ids"].to(accelerator.device) + # weight_dtype) use float instead of fp16/bf16 because text encoder is float + encoder_hidden_states = torch.stack( + [ + train_util.get_hidden_states(args, s, tokenizer, text_encoder, weight_dtype) + for s in torch.split(input_ids, 1, dim=1) + ] + ) + + # Sample noise that we'll add to the latents + noise = torch.randn_like(latents, device=latents.device) + if args.noise_offset: + # https://www.crosslabs.org//blog/diffusion-with-offset-noise + noise += args.noise_offset * torch.randn((latents.shape[0], latents.shape[1], 1, 1), device=latents.device) + + # Sample a random timestep for each image + timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (b_size,), device=latents.device) + timesteps = timesteps.long() + + # Add noise to the latents according to the noise magnitude at each timestep + # (this is the forward diffusion process) + noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps) + + # Predict the noise residual + noise_pred = unet(noisy_latents, timesteps, encoder_hidden_states=encoder_hidden_states).sample + + if args.v_parameterization: + # v-parameterization training + target = noise_scheduler.get_velocity(latents, noise, timesteps) + else: + target = noise + + loss = torch.nn.functional.mse_loss(noise_pred.float(), target.float(), reduction="none") + loss = loss.mean([1, 2, 3]) + + if args.min_snr_gamma: + loss = apply_snr_weight(loss, timesteps, noise_scheduler, args.min_snr_gamma) + + loss_weights = batch["loss_weights"] # 各sampleごとのweight + loss = loss * loss_weights + + loss = loss.mean() # 平均なのでbatch_sizeで割る必要なし + + accelerator.backward(loss) + if accelerator.sync_gradients and args.max_grad_norm != 0.0: + params_to_clip = text_encoder.get_input_embeddings().parameters() + accelerator.clip_grad_norm_(params_to_clip, args.max_grad_norm) + + optimizer.step() + lr_scheduler.step() + optimizer.zero_grad(set_to_none=True) + + # Let's make sure we don't update any embedding weights besides the newly added token + with torch.no_grad(): + unwrap_model(text_encoder).get_input_embeddings().weight[index_no_updates] = orig_embeds_params[ + index_no_updates + ] + + # Checks if the accelerator has performed an optimization step behind the scenes + if accelerator.sync_gradients: + progress_bar.update(1) + global_step += 1 + # TODO: fix sample_images + # train_util.sample_images( + # accelerator, args, None, global_step, accelerator.device, vae, tokenizer, text_encoder, unet, prompt_replacement + # ) + + current_loss = loss.detach().item() + if args.logging_dir is not None: + logs = {"loss": current_loss, "lr": float(lr_scheduler.get_last_lr()[0])} + if args.optimizer_type.lower() == "DAdaptation".lower(): # tracking d*lr value + logs["lr/d*lr"] = ( + lr_scheduler.optimizers[0].param_groups[0]["d"] * lr_scheduler.optimizers[0].param_groups[0]["lr"] + ) + accelerator.log(logs, step=global_step) + + loss_total += current_loss + avr_loss = loss_total / (step + 1) + logs = {"loss": avr_loss} # , "lr": lr_scheduler.get_last_lr()[0]} + progress_bar.set_postfix(**logs) + + if global_step >= args.max_train_steps: + break + + if args.logging_dir is not None: + logs = {"loss/epoch": loss_total / len(train_dataloader)} + accelerator.log(logs, step=epoch + 1) + + accelerator.wait_for_everyone() + + updated_embs = unwrap_model(text_encoder).get_input_embeddings().weight[token_ids_XTI].data.detach().clone() + + if args.save_every_n_epochs is not None: + model_name = train_util.DEFAULT_EPOCH_NAME if args.output_name is None else args.output_name + + def save_func(): + ckpt_name = train_util.EPOCH_FILE_NAME.format(model_name, epoch + 1) + "." + args.save_model_as + ckpt_file = os.path.join(args.output_dir, ckpt_name) + print(f"saving checkpoint: {ckpt_file}") + save_weights(ckpt_file, updated_embs, save_dtype) + + def remove_old_func(old_epoch_no): + old_ckpt_name = train_util.EPOCH_FILE_NAME.format(model_name, old_epoch_no) + "." + args.save_model_as + old_ckpt_file = os.path.join(args.output_dir, old_ckpt_name) + if os.path.exists(old_ckpt_file): + print(f"removing old checkpoint: {old_ckpt_file}") + os.remove(old_ckpt_file) + + saving = train_util.save_on_epoch_end(args, save_func, remove_old_func, epoch + 1, num_train_epochs) + if saving and args.save_state: + train_util.save_state_on_epoch_end(args, accelerator, model_name, epoch + 1) + + # TODO: fix sample_images + # train_util.sample_images( + # accelerator, args, epoch + 1, global_step, accelerator.device, vae, tokenizer, text_encoder, unet, prompt_replacement + # ) + + # end of epoch + + is_main_process = accelerator.is_main_process + if is_main_process: + text_encoder = unwrap_model(text_encoder) + + accelerator.end_training() + + if args.save_state: + train_util.save_state_on_train_end(args, accelerator) + + updated_embs = text_encoder.get_input_embeddings().weight[token_ids_XTI].data.detach().clone() + + del accelerator # この後メモリを使うのでこれは消す + + if is_main_process: + os.makedirs(args.output_dir, exist_ok=True) + + model_name = train_util.DEFAULT_LAST_OUTPUT_NAME if args.output_name is None else args.output_name + ckpt_name = model_name + "." + args.save_model_as + ckpt_file = os.path.join(args.output_dir, ckpt_name) + + print(f"save trained model to {ckpt_file}") + save_weights(ckpt_file, updated_embs, save_dtype) + print("model saved.") + + +def save_weights(file, updated_embs, save_dtype): + updated_embs = updated_embs.reshape(16, -1, updated_embs.shape[-1]) + updated_embs = updated_embs.chunk(16) + XTI_layers = [ + "IN01", + "IN02", + "IN04", + "IN05", + "IN07", + "IN08", + "MID", + "OUT03", + "OUT04", + "OUT05", + "OUT06", + "OUT07", + "OUT08", + "OUT09", + "OUT10", + "OUT11", + ] + state_dict = {} + for i, layer_name in enumerate(XTI_layers): + state_dict[layer_name] = updated_embs[i].squeeze(0).detach().clone().to("cpu").to(save_dtype) + + # if save_dtype is not None: + # for key in list(state_dict.keys()): + # v = state_dict[key] + # v = v.detach().clone().to("cpu").to(save_dtype) + # state_dict[key] = v + + if os.path.splitext(file)[1] == ".safetensors": + from safetensors.torch import save_file + + save_file(state_dict, file) + else: + torch.save(state_dict, file) # can be loaded in Web UI + + +def load_weights(file): + if os.path.splitext(file)[1] == ".safetensors": + from safetensors.torch import load_file + + data = load_file(file) + else: + raise ValueError(f"NOT XTI: {file}") + + if len(data.values()) != 16: + raise ValueError(f"NOT XTI: {file}") + + emb = torch.concat([x for x in data.values()]) + + return emb + + +def setup_parser() -> argparse.ArgumentParser: + parser = argparse.ArgumentParser() + + train_util.add_sd_models_arguments(parser) + train_util.add_dataset_arguments(parser, True, True, False) + train_util.add_training_arguments(parser, True) + train_util.add_optimizer_arguments(parser) + config_util.add_config_arguments(parser) + custom_train_functions.add_custom_train_arguments(parser) + + parser.add_argument( + "--save_model_as", + type=str, + default="pt", + choices=[None, "ckpt", "pt", "safetensors"], + help="format to save the model (default is .pt) / モデル保存時の形式（デフォルトはpt）", + ) + + parser.add_argument("--weights", type=str, default=None, help="embedding weights to initialize / 学習するネットワークの初期重み") + parser.add_argument( + "--num_vectors_per_token", type=int, default=1, help="number of vectors per token / トークンに割り当てるembeddingsの要素数" + ) + parser.add_argument( + "--token_string", + type=str, + default=None, + help="token string used in training, must not exist in tokenizer / 学習時に使用されるトークン文字列、tokenizerに存在しない文字であること", + ) + parser.add_argument("--init_word", type=str, default=None, help="words to initialize vector / ベクトルを初期化に使用する単語、複数可") + parser.add_argument( + "--use_object_template", + action="store_true", + help="ignore caption and use default templates for object / キャプションは使わずデフォルトの物体用テンプレートで学習する", + ) + parser.add_argument( + "--use_style_template", + action="store_true", + help="ignore caption and use default templates for stype / キャプションは使わずデフォルトのスタイル用テンプレートで学習する", + ) + + return parser + + +if __name__ == "__main__": + parser = setup_parser() + + args = parser.parse_args() + args = train_util.read_config_from_file(args, parser) + + train(args)