Minor patch release v2.1.1

App

Added

• add flow fail() (#18883)

Fixed

• Fix failing lightning cli entry point (#18821)

---

Fabric

Changed

• Calling a method other than forward that invokes submodules is now an error when the model is wrapped (e.g., with DDP) (#18819)

Fixed

• Fixed false-positive warnings about method calls on the Fabric-wrapped module (#18819)
• Refined the FSDP saving logic and error messaging when the path exists (#18884)
• Fixed layer conversion under Fabric.init_module() context manager when using the BitsandbytesPrecision plugin (#18914)

---

PyTorch

Fixed

• Fixed an issue when replacing an existing last.ckpt file with a symlink (#18793)
• Fixed an issue when BatchSizeFinder steps_per_trial parameter ends up defining how many validation batches to run during the entire training (#18394)
• Fixed an issue saving the last.ckpt file when using ModelCheckpoint on a remote filesystem, and no logger is used (#18867)
• Refined the FSDP saving logic and error messaging when the path exists (#18884)
• Fixed an issue parsing the version from folders that don't include a version number in TensorBoardLogger and CSVLogger (#18897)

---

Contributors

@awaelchli, @Borda, @BoringDonut, @carmocca, @hiaoxui, @ioangatop, @nohalon, @rasbt, @tchaton

If we forgot someone due to not matching commit email with GitHub account, let us know :]

Full Changelog: 2.1.0...2.1.1