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AssertionError: DistributedDataParallel is not needed when a module doesn't have any parameter that requires a gradient. about torchdistill HOT 2 CLOSED

yoshitomo-matsubara avatar yoshitomo-matsubara commented on June 4, 2024
AssertionError: DistributedDataParallel is not needed when a module doesn't have any parameter that requires a gradient.

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Comments (2)

yoshitomo-matsubara avatar yoshitomo-matsubara commented on June 4, 2024

Hi @wongyufei ,
Thank you for reporting the issue.

I think it is caused by some change of DistributedDataParallel made in recent PyTorch version. When none of the modules in teacher model is trained, this will happen. (e.g., requires_grad: False in teacher/student entry)
You can avoid it by replacing wrapper: 'DistributedDataParallel' with wrapper: 'DataParallel' in teacher entry of such yaml files.

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yoshitomo-matsubara avatar yoshitomo-matsubara commented on June 4, 2024

I just merged #124, which should resolve the issue. Fetch the repo and try it again.

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