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[Fix] Correctly saves _metadata of state_dict when saving checkpoints #1131

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May 6, 2023
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[Fix] Correctly saves _metadata of state_dict when saving checkpoints #1131

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5 changes: 3 additions & 2 deletions mmengine/runner/checkpoint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -652,10 +652,11 @@ def weights_to_cpu(state_dict):
Returns:
OrderedDict: Model weights on GPU.
"""
# stash metadata to put in state_dict later
metadata = getattr(state_dict, '_metadata', OrderedDict())
state_dict = apply_to(state_dict, lambda x: hasattr(x, 'cpu'),
lambda x: x.cpu())
# Keep metadata in state_dict
state_dict._metadata = getattr(state_dict, '_metadata', OrderedDict())
state_dict._metadata = metadata
return state_dict


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