Download Latest Version Lightning v2.5.5 source code.tar.gz (16.4 MB)
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pytorch_lightning-2.5.5.tar.gz 2025-09-05 643.7 kB
lightning-2.5.5.tar.gz 2025-09-05 640.8 kB
pytorch_lightning-2.5.5-py3-none-any.whl 2025-09-05 832.4 kB
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Lightning v2.5.5 source code.tar.gz 2025-09-05 16.4 MB
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README.md 2025-09-05 2.7 kB
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Changes in 2.5.5

PyTorch Lightning

Changed - Include `exclude_frozen_parameters` to `DeepSpeedStrategy` ([#21060](https://github.com/Lightning-AI/pytorch-lightning/pull/21060)) - Include `PossibleUserWarning` that is raised if modules are in eval mode when training starts ([#21146](https://github.com/Lightning-AI/pytorch-lightning/pull/21146))
Fixed - Fixed `LightningCLI` not using `ckpt_path` hyperparameters to instantiate classes ([#21116](https://github.com/Lightning-AI/pytorch-lightning/pull/21116)) - Fixed callbacks by defer step/time-triggered `ModelCheckpoint` saves until validation metrics are available ([#21106](https://github.com/Lightning-AI/pytorch-lightning/pull/21106)) - Fixed with adding a missing device id for pytorch 2.8 ([#21105](https://github.com/Lightning-AI/pytorch-lightning/pull/21105)) - Fixed `TQDMProgressBar` not resetting correctly when using both a finite and iterable dataloader ([#21147](https://github.com/Lightning-AI/pytorch-lightning/pull/21147)) - Fixed cleanup of temporary files from `Tuner` on crashes ([#21162](https://github.com/Lightning-AI/pytorch-lightning/pull/21162))

Lightning Fabric

Changed - Include `exclude_frozen_parameters` to `DeepSpeedStrategy` ([#21060](https://github.com/Lightning-AI/pytorch-lightning/pull/21060)) - Let `_get_default_process_group_backend_for_device` support more hardware platforms ( [#21057](https://github.com/Lightning-AI/pytorch-lightning/pull/21057), [#21093](https://github.com/Lightning-AI/pytorch-lightning/pull/21093))
Fixed - Fixed with adding a missing device id for pytorch 2.8 ([#21105](https://github.com/Lightning-AI/pytorch-lightning/pull/21105)) - Respecting `verbose=False` in `seed_everything` when no seed is provided ([#21161](https://github.com/Lightning-AI/pytorch-lightning/pull/21161))


Full commit list: 2.5.4 -> 2.5.5

Contributors

We thank all folks who submitted issues, features, fixes and doc changes. It's the only way we can collectively make Lightning :zap: better for everyone, nice job!

In particular, we would like to thank the authors of the pull-requests above, in no particular order:

@Borda, @KAVYANSHTYAGI, @littlebullGit, @mauvilsa, @SkafteNicki, @taozhiwei

Thank you :heart: and we hope you'll keep them coming!

Source: README.md, updated 2025-09-05