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[fix bug] PixArt inference_steps=1 #11079

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Merged
merged 3 commits into from
Mar 20, 2025
Merged

[fix bug] PixArt inference_steps=1 #11079

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2dae26c
fix bug when pixart-dmd inference with `num_inference_steps=1`
lawrence-cj Mar 17, 2025
ae78a65
use return_dict=False and return [1] element for 1-step pixart model,…
lawrence-cj Mar 20, 2025
c577fcf
Merge branch 'main' into main
lawrence-cj Mar 20, 2025
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3 changes: 1 addition & 2 deletions src/diffusers/pipelines/pixart_alpha/pipeline_pixart_alpha.py
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Original file line number Diff line number Diff line change
Expand Up @@ -941,8 +941,7 @@ def __call__(

# compute previous image: x_t -> x_t-1
if num_inference_steps == 1:
# For DMD one step sampling: https://arxiv.org/abs/2311.18828
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs).pred_original_sample
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[1]
else:
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[0]

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