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Update AMP imports for PyTorch version compatibility #5454

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Update AMP imports for PyTorch version compatibility #5454

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@stefanklut stefanklut commented Apr 1, 2025 •
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Replace torch.cuda.amp imports with torch.amp for PyTorch versions greater than 2.4.0, ensuring compatibility and using partial for device specification. Improvment over PR #5371 due to backward compatibility. Resolves:

FutureWarning: `torch.cuda.amp.autocast(args...)` is deprecated. Please use `torch.amp.autocast('cuda', args...)` instead.
  with autocast(dtype=self.precision):

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Apr 1, 2025
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