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Allow dataloaders without sampler field present #1907

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May 20, 2020
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Allow dataloaders without sampler field present #1907

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Allow dataloaders without sampler field present
maximsch2 May 20, 2020
9c3b842
chlog
Borda May 20, 2020
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4 changes: 3 additions & 1 deletion CHANGELOG.md
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Expand Up @@ -10,7 +10,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).

- Add Metric Base Classes ([#1326](https://github.com/PyTorchLightning/pytorch-lightning/pull/1326), [#1877](https://github.com/PyTorchLightning/pytorch-lightning/pull/1877))

- Added type hints in `Trainer.fit()` and `Trainer.test()` to reflect that also a list of dataloaders can be passed in ([#1723](https://github.com/PyTorchLightning/pytorch-lightning/pull/1723)).
- Added type hints in `Trainer.fit()` and `Trainer.test()` to reflect that also a list of dataloaders can be passed in ([#1723](https://github.com/PyTorchLightning/pytorch-lightning/pull/1723))

- Allow dataloaders without sampler field present ([#1907](https://github.com/PyTorchLightning/pytorch-lightning/pull/1907))

### Changed

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1 change: 1 addition & 0 deletions pytorch_lightning/trainer/training_loop.py
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Expand Up @@ -327,6 +327,7 @@ def train(self):
self.reset_train_dataloader(model)
# set seed for distributed sampler (enables shuffling for each epoch)
if (self.use_ddp or self.use_horovod) \
and hasattr(self.train_dataloader, 'sampler') \
and hasattr(self.train_dataloader.sampler, 'set_epoch'):
self.train_dataloader.sampler.set_epoch(epoch)

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