pytorch-lightning
https://github.com/pytorchlightning/pytorch-lightning
Python
The lightweight PyTorch wrapper for high-performance AI research. Scale your models, not the boilerplate.
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- Issues
- fix(data): support positional DataLoader arguments when re-instantiating
- Fix `WandbLogger` ignoring `dir` when `save_dir` is not set
- fix(strategies): report the world size as `num_replicas` for DDP and FSDP
- Improve error message for mixed strategy namespaces
- `Timer.time_elapsed` becomes negative during repeated validation runs
- Reset `Timer` end timestamps when a stage restarts
- Add `from_fx()` and `to_unfx()` utilities for fx-converted models
- LightningCLI: avoid jsonargparse v4 deprecation warnings and prepare for v5
- feat(loggers): add group_metrics option to TensorBoardLogger
- ci: pin runner images to ubuntu-24.04, macos-26, windows-2025
- Docs
- Python not yet supported