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fix the bug on the leading time schedule #13868

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fix the bug on the leading time schedule #13868

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665c034
fix the bug on the leading time schedule
TheLovesOfLadyPurple Jun 5, 2026
19c4cb8
Merge branch 'main' into fix-timeschedule
TheLovesOfLadyPurple Jun 9, 2026
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2 changes: 1 addition & 1 deletion src/diffusers/schedulers/scheduling_unipc_multistep.py
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Original file line number Diff line number Diff line change
Expand Up @@ -356,7 +356,7 @@ def set_timesteps(
.astype(np.int64)
)
elif self.config.timestep_spacing == "leading":
step_ratio = self.config.num_train_timesteps // (num_inference_steps + 1)
step_ratio = self.config.num_train_timesteps // (num_inference_steps)
# creates integer timesteps by multiplying by ratio
# casting to int to avoid issues when num_inference_step is power of 3
timesteps = (np.arange(0, num_inference_steps + 1) * step_ratio).round()[::-1][:-1].copy().astype(np.int64)
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