xinyun/ComfyUI-CogVideoXWrapper
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disable autocast if MPS is available

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AMP Autocast not available on current pytorch, will be added in 2.5+ version and nightlies but those are buggy, for now just disable AMP if we're on MPS.
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Chris Chance 2024-10-15 14:53:54 -04:00 committed by GitHub
parent 09ed641575
commit 035a370fa1
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1 changed files with 3 additions and 1 deletions
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nodes.py
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@ -1116,7 +1116,9 @@ class CogVideoXFunSampler:
generator= torch.Generator(device="cpu").manual_seed(seed)
autocastcondition = not pipeline["onediff"]
# Note: if we're on MPS return False, otherwise check for onediff as normal
# TODO: Torch 2.5+ is supposed to add AMP support for MPS ... not available currently.
autocastcondition = not pipeline["onediff"] if not torch.backends.mps.is_available() else False
autocast_context = torch.autocast(mm.get_autocast_device(device)) if autocastcondition else nullcontext()
with autocast_context:
video_length = int((video_length - 1) // pipe.vae.config.temporal_compression_ratio * pipe.vae.config.temporal_compression_ratio) + 1 if video_length != 1 else 1