Deprecate nvidia/apex #16039

carmocca · 2022-12-13T16:14:46Z

What does this PR do?

Fixes #14416

PyTorch Lightning package changes:

Removes apex from the docs and the deprecated pieces below
Updates tests to avoid the deprecation messages, or catch them
Deprecates NativeMixedPrecisionPlugin in favor of MixedPrecisionPlugin
Deprecates the LightningModule.optimizer_step(..., using_native_amp=bool) argument
Deprecates Trainer(amp_backend)
Deprecates Trainer.amp_backend
Deprecates Trainer(amp_level). This was already deprecated but the previous deprecation has been replaced with the one in this PR for consistency.
Deprecates the ApexMixedPrecisionPlugin. The deprecation message triggered by Apex internally is replaced by ours.
Deprecates the AMPType enum and updates the codebase to avoid it. The _DeprecatedEnumMeta class is re-introduced to do this.
Deprecates DeepSpeedPrecisionPlugin(amp_type, amp_level) arguments.

Lite package changes:

Renames the NativeMixedPrecision class to MixedPrecision
Removes DeepSpeedPrecision(amp_type, amp_level) arguments and their support
Remvoes the AMPType enum and its uses.

Follow-up items (out of scope for this PR):

Remove native_ from the appropriate filenames
Remove "Native" from the FSDP class names

Does your PR introduce any breaking changes? If yes, please list them.

None intended

Before submitting

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Did you write any new necessary tests? (not for typos and docs)
Did you verify new and existing tests pass locally with your changes?
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cc @Borda @tchaton @carmocca @justusschock @awaelchli

src/pytorch_lightning/plugins/precision/native_amp.py

github-actions · 2022-12-20T00:35:04Z

⚡ Required checks status: All passing 🟢

Groups summary

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install-pkg (windows-2022, notset, 3.7)	success	✅
install-pkg (windows-2022, notset, 3.10)	success	✅

These checks are required after the changes to src/lightning_lite/connector.py, src/lightning_lite/plugins/__init__.py, src/lightning_lite/plugins/precision/__init__.py, src/lightning_lite/plugins/precision/deepspeed.py, src/lightning_lite/plugins/precision/fsdp.py, src/lightning_lite/plugins/precision/native_amp.py, src/lightning_lite/strategies/deepspeed.py, src/lightning_lite/utilities/__init__.py, src/lightning_lite/utilities/enums.py, src/pytorch_lightning/core/module.py, src/pytorch_lightning/lite/lite.py, src/pytorch_lightning/loops/optimization/optimizer_loop.py, src/pytorch_lightning/plugins/__init__.py, src/pytorch_lightning/plugins/precision/__init__.py, src/pytorch_lightning/plugins/precision/apex_amp.py, src/pytorch_lightning/plugins/precision/deepspeed.py, src/pytorch_lightning/plugins/precision/fsdp_native_native_amp.py, src/pytorch_lightning/plugins/precision/native_amp.py, src/pytorch_lightning/plugins/precision/sharded_native_amp.py, src/pytorch_lightning/strategies/deepspeed.py, src/pytorch_lightning/trainer/configuration_validator.py, src/pytorch_lightning/trainer/connectors/accelerator_connector.py, src/pytorch_lightning/trainer/connectors/checkpoint_connector.py, src/pytorch_lightning/trainer/trainer.py, src/pytorch_lightning/utilities/__init__.py, src/pytorch_lightning/utilities/enums.py, src/pytorch_lightning/utilities/imports.py.

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carmocca self-assigned this Dec 13, 2022

github-actions bot added the pl Generic label for PyTorch Lightning package label Dec 13, 2022

carmocca added deprecation Includes a deprecation precision: apex (removed) NVIDIA/apex precision labels Dec 13, 2022

carmocca added this to the v1.9 milestone Dec 13, 2022

carmocca commented Dec 13, 2022

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carmocca added 5 commits December 19, 2022 16:55

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carmocca force-pushed the depreaction/apex branch from 024d6dc to 15ed1ce Compare December 19, 2022 15:55

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carmocca force-pushed the depreaction/apex branch from 2f286e1 to ea40f56 Compare December 19, 2022 17:18

carmocca added 6 commits December 20, 2022 00:36

Deprecation tests

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CHANGELOG

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Trainer.amp_backend. Tests

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carmocca marked this pull request as ready for review December 20, 2022 00:33

carmocca requested review from awaelchli, justusschock, williamFalcon, tchaton, Borda and edenlightning as code owners December 20, 2022 00:33

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carmocca changed the title ~~[WIP] Deprecate nvidia/apex~~ Deprecate nvidia/apex Dec 20, 2022

carmocca enabled auto-merge (squash) December 20, 2022 01:31

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carmocca merged commit 14f441c into master Dec 20, 2022

carmocca deleted the depreaction/apex branch December 20, 2022 10:09

mergify bot added the ready PRs ready to be merged label Dec 20, 2022

carmocca added a commit that referenced this pull request Dec 20, 2022

Deprecate nvidia/apex (#16039)

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Deprecate nvidia/apex (#16039)

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Deprecate nvidia/apex (#16039)

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Deprecate nvidia/apex (#16039)

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Deprecate nvidia/apex (#16039)

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Deprecate nvidia/apex (#16039)

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