Change of Pytorch API causes error (torch.nn.backends is deprecated)
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Description
The recent commit pytorch/pytorch@23fde77 removed torch.nn.backends.backend.FunctionBackend from the torch.nn . This cause errors when using the apex library since the existence of this module is tested on apex/amp/utils.py on functions has_func, get_func and set_func. Simply removing the test appears to fix the problem since these functions were deprecated on Pytorch.
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Research direction
Start in apex/amp/utils.py and inspect the has_func, get_func, and set_func checks for torch.nn.backends.backend.FunctionBackend. Verify the affected Apex AMP behavior against the described PyTorch API change; done means the deprecated-module check no longer causes errors while the affected functions remain usable.
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Assessment
- Tech stack
- python, pytorch
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 35/100