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Attempt to resolve NaN issue with unstable VAEs in fp32 mk2 #12630

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Aug 19, 2023
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Attempt to resolve NaN issue with unstable VAEs in fp32 mk2 #12630

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3 changes: 2 additions & 1 deletion modules/sd_samplers_common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,8 @@ def samples_to_images_tensor(sample, approximation=None, model=None):
else:
if model is None:
model = shared.sd_model
x_sample = model.decode_first_stage(sample.to(model.first_stage_model.dtype))
with devices.without_autocast(): # fixes an issue with unstable VAEs that are flaky even in fp32
x_sample = model.decode_first_stage(sample.to(model.first_stage_model.dtype))

return x_sample

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