diff --git a/modules/sd_samplers_kdiffusion.py b/modules/sd_samplers_kdiffusion.py index f076fc55..86d657e2 100644 --- a/modules/sd_samplers_kdiffusion.py +++ b/modules/sd_samplers_kdiffusion.py @@ -269,6 +269,16 @@ class KDiffusionSampler: return sigmas + def create_noise_sampler(self, x, sigmas, p): + """For DPM++ SDE: manually create noise sampler to enable deterministic results across different batch sizes""" + if shared.opts.no_dpmpp_sde_batch_determinism: + return None + + from k_diffusion.sampling import BrownianTreeNoiseSampler + sigma_min, sigma_max = sigmas[sigmas > 0].min(), sigmas.max() + current_iter_seeds = p.all_seeds[p.iteration * p.batch_size:(p.iteration + 1) * p.batch_size] + return BrownianTreeNoiseSampler(x, sigma_min, sigma_max, seed=current_iter_seeds) + def sample_img2img(self, p, x, noise, conditioning, unconditional_conditioning, steps=None, image_conditioning=None): steps, t_enc = sd_samplers_common.setup_img2img_steps(p, steps) @@ -278,18 +288,24 @@ class KDiffusionSampler: xi = x + noise * sigma_sched[0] extra_params_kwargs = self.initialize(p) - if 'sigma_min' in inspect.signature(self.func).parameters: + parameters = inspect.signature(self.func).parameters + + if 'sigma_min' in parameters: ## last sigma is zero which isn't allowed by DPM Fast & Adaptive so taking value before last extra_params_kwargs['sigma_min'] = sigma_sched[-2] - if 'sigma_max' in inspect.signature(self.func).parameters: + if 'sigma_max' in parameters: extra_params_kwargs['sigma_max'] = sigma_sched[0] - if 'n' in inspect.signature(self.func).parameters: + if 'n' in parameters: extra_params_kwargs['n'] = len(sigma_sched) - 1 - if 'sigma_sched' in inspect.signature(self.func).parameters: + if 'sigma_sched' in parameters: extra_params_kwargs['sigma_sched'] = sigma_sched - if 'sigmas' in inspect.signature(self.func).parameters: + if 'sigmas' in parameters: extra_params_kwargs['sigmas'] = sigma_sched + if self.funcname == 'sample_dpmpp_sde': + noise_sampler = self.create_noise_sampler(x, sigmas, p) + extra_params_kwargs['noise_sampler'] = noise_sampler + self.model_wrap_cfg.init_latent = x self.last_latent = x extra_args={ @@ -303,7 +319,7 @@ class KDiffusionSampler: return samples - def sample(self, p, x, conditioning, unconditional_conditioning, steps=None, image_conditioning = None): + def sample(self, p, x, conditioning, unconditional_conditioning, steps=None, image_conditioning=None): steps = steps or p.steps sigmas = self.get_sigmas(p, steps) @@ -311,14 +327,20 @@ class KDiffusionSampler: x = x * sigmas[0] extra_params_kwargs = self.initialize(p) - if 'sigma_min' in inspect.signature(self.func).parameters: + parameters = inspect.signature(self.func).parameters + + if 'sigma_min' in parameters: extra_params_kwargs['sigma_min'] = self.model_wrap.sigmas[0].item() extra_params_kwargs['sigma_max'] = self.model_wrap.sigmas[-1].item() - if 'n' in inspect.signature(self.func).parameters: + if 'n' in parameters: extra_params_kwargs['n'] = steps else: extra_params_kwargs['sigmas'] = sigmas + if self.funcname == 'sample_dpmpp_sde': + noise_sampler = self.create_noise_sampler(x, sigmas, p) + extra_params_kwargs['noise_sampler'] = noise_sampler + self.last_latent = x samples = self.launch_sampling(steps, lambda: self.func(self.model_wrap_cfg, x, extra_args={ 'cond': conditioning, diff --git a/modules/shared.py b/modules/shared.py index 79fbf724..22344431 100644 --- a/modules/shared.py +++ b/modules/shared.py @@ -414,6 +414,7 @@ options_templates.update(options_section(('sd', "Stable Diffusion"), { options_templates.update(options_section(('compatibility', "Compatibility"), { "use_old_emphasis_implementation": OptionInfo(False, "Use old emphasis implementation. Can be useful to reproduce old seeds."), "use_old_karras_scheduler_sigmas": OptionInfo(False, "Use old karras scheduler sigmas (0.1 to 10)."), + "no_dpmpp_sde_batch_determinism": OptionInfo(False, "Do not make DPM++ SDE deterministic across different batch sizes."), "use_old_hires_fix_width_height": OptionInfo(False, "For hires fix, use width/height sliders to set final resolution rather than first pass (disables Upscale by, Resize width/height to)."), }))