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check if model is instance of DataParallel before saving checkpoint #14

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check if model is instance of DataParallel before saving checkpoint #14

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8 changes: 7 additions & 1 deletion pytorchtools.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ def __init__(self, patience=7, verbose=False, delta=0, path='checkpoint.pt', tra
self.delta = delta
self.path = path
self.trace_func = trace_func

def __call__(self, val_loss, model):

score = -val_loss
Expand All @@ -47,5 +48,10 @@ def save_checkpoint(self, val_loss, model):
'''Saves model when validation loss decrease.'''
if self.verbose:
self.trace_func(f'Validation loss decreased ({self.val_loss_min:.6f} --> {val_loss:.6f}). Saving model ...')
torch.save(model.state_dict(), self.path)

if isinstance(model, torch.nn.DataParallel):
torch.save(model.module.state_dict(), self.path)
else:
torch.save(model.state_dict(), self.path)

self.val_loss_min = val_loss
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