Weekly patch release

App

Changed

• Removed the top-level import lightning.pdb; import lightning.app.pdb instead (#18177)
• Client retries forever (#18065)

Fixed

• Fixed an issue that would prevent the user to set the multiprocessing start method after importing lightning (#18177)

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Fabric

Changed

• Disabled the auto-detection of the Kubeflow environment (#18137)

Fixed

• Fixed issue where DDP subprocesses that used Hydra would set hydra's working directory to current directory (#18145)
• Fixed an issue that would prevent the user to set the multiprocessing start method after importing lightning (#18177)
• Fixed an issue with Fabric.all_reduce() not performing an inplace operation for all backends consistently (#18235)

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PyTorch

Added

• Added LightningOptimizer.refresh() to update the __dict__ in case the optimizer it wraps has changed its internal state (#18280)

Changed

• Disabled the auto-detection of the Kubeflow environment (#18137))

Fixed

• Fixed a Missing folder exception when using a Google Storage URL as a default_root_dir (#18088)
• Fixed an issue that would prevent the user to set the multiprocessing start method after importing lightning (#18177)
• Fixed the gradient unscaling logic if the training step skipped backward (by returning None) (#18267)
• Ensure that the closure running inside the optimizer step has gradients enabled, even if the optimizer step has it disabled (#18268)
• Fixed an issue that could cause the LightningOptimizer wrapper returned by LightningModule.optimizers() have different internal state than the optimizer it wraps (#18280)

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Contributors

@0x404, @awaelchli, @bilelomrani1, @Borda, @ethanwharris, @nisheethlahoti

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