check if model is instance of DataParallel before saving checkpoint #14
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Problem
In current save_checkpoint function, if the model is on multiple GPUs, i.e. model is a instance of torch.nn.DataParallel, and then the saved checkpoint could not be loaded again.
Describe your changes
Follow the pytorch tutorial, first the current model is checked, if it is a instance of DataParallel class.
If the model is a instance of DataParallel class, then
model.module.state_dict()is saved instead ofmodel.state_dict()in current implementation.