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[Fix] Ensure we set the default device before initializing deepspeed #6460

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merged 4 commits into from
Mar 10, 2021
Merged

[Fix] Ensure we set the default device before initializing deepspeed #6460

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05422ca
Ensure we set the default device before initializing deepspeed
Mar 10, 2021
01adbd4
Add CHANGELOG.md
Mar 10, 2021
a0dd6ee
Update pytorch_lightning/plugins/training_type/deepspeed.py
SeanNaren Mar 10, 2021
40108cf
Merge branch 'master' into fix/default_device
SeanNaren Mar 10, 2021
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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -122,6 +122,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
- Fixed logger creating directory structure too early in DDP ([#6380](https://github.com/PyTorchLightning/pytorch-lightning/pull/6380))


- Fixed DeepSpeed additional memory use on rank 0 when default device not set early enough ([#6460](https://github.com/PyTorchLightning/pytorch-lightning/pull/6460))


## [1.2.3] - 2021-03-09

### Fixed
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2 changes: 2 additions & 0 deletions pytorch_lightning/plugins/training_type/deepspeed.py
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Expand Up @@ -231,6 +231,8 @@ def _init_scheduler_optimizer(self):
return optimizer, scheduler, optimizer_frequencies

def _initialize_deepspeed_train(self, model):
if self.root_device.type == "cuda":
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torch.cuda.set_device(self.root_device)
optimizer, lightning_scheduler, optimizer_frequencies = None, None, None
if "optimizer" not in self.config:
rank_zero_info(
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