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Update trainer.py

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William Falcon 2019-07-16 13:12:56 -04:00 committed by GitHub
parent 80192752b7
commit a83588b14e
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pytorch_lightning/models/trainer.py
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@ -277,7 +277,7 @@ class Trainer(TrainerIO):
self.test_dataloader = model.test_dataloader
self.val_dataloader = model.val_dataloader
if self.data_parallel and issubclass(self.tng_dataloader.sampler, DistributedSampler):
if self.data_parallel and not issubclass(self.tng_dataloader.sampler, DistributedSampler):
msg = '''
when using multiple gpus and multiple nodes you must pass a DistributedSampler to DataLoader(sampler).