Lightning

App

- Fixed MultiNode Component to use separate cloud computes (15965)
- Fixed Registration for CloudComputes of Works in `L.app.structures` (15964)
- Fixed a bug where auto-upgrading to the latest lightning via the CLI could get stuck in a loop (15984)


Pytorch

- Fixed the `XLAProfiler` not recording anything due to mismatching of action names (15885)


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**Full Changelog**: https://github.com/Lightning-AI/lightning/compare/1.8.4...1.8.4.post0

App

Added

- Add `code_dir` argument to tracer run (15771)
- Added the CLI command `lightning run model` to launch a `LightningLite` accelerated script (15506)
- Added the CLI command `lightning delete app` to delete a lightning app on the cloud (15783)
- Added a CloudMultiProcessBackend which enables running a child App from within the Flow in the cloud (15800)
- Utility for pickling work object safely even from a child process (15836)
- Added `AutoScaler` component (15769)
- Added the property `ready` of the LightningFlow to inform when the `Open App` should be visible (15921)
- Added private work attributed `_start_method` to customize how to start the works (15923)
- Added a `configure_layout` method to the `LightningWork` which can be used to control how the work is handled in the layout of a parent flow (15926)
- Added the ability to run a Lightning App or Component directly from the Gallery using `lightning run app organization/name` (15941)
- Added automatic conversion of list and dict of works and flows to structures (15961)

Changed

- The `MultiNode` components now warn the user when running with `num_nodes > 1` locally (15806)
- Cluster creation and deletion now waits by default [15458
- Running an app without a UI locally no longer opens the browser (15875)
- Show a message when `BuildConfig(requirements=[...])` is passed but a `requirements.txt` file is already present in the Work (15799)
- Show a message when `BuildConfig(dockerfile="...")` is passed but a `Dockerfile` file is already present in the Work (15799)
- Dropped name column from cluster list (15721)
- Apps without UIs no longer activate the "Open App" button when running in the cloud (15875)
- Wait for full file to be transferred in Path / Payload (15934)

Removed

- Removed the `SingleProcessRuntime` (15933)

Fixed

- Fixed SSH CLI command listing stopped components (15810)
- Fixed bug when launching apps on multiple clusters (15484)
- Fixed Sigterm Handler causing thread lock which caused KeyboardInterrupt to hang (15881)
- Fixed MPS error for multinode component (defaults to cpu on mps devices now as distributed operations are not supported by pytorch on mps) (15748)
- Fixed the work not stopped when successful when passed directly to the LightningApp (15801)
- Fixed the PyTorch Inference locally on GPU (15813)
- Fixed the `enable_spawn` method of the `WorkRunExecutor` (15812)
- Fixed require/import decorator (15849)
- Fixed a bug where using `L.app.structures` would cause multiple apps to be opened and fail with an error in the cloud (15911)
- Fixed PythonServer generating noise on M1 (15949)
- Fixed multiprocessing breakpoint (15950)
- Fixed detection of a Lightning App running in debug mode (15951)
- Fixed `ImportError` on Multinode if package not present (15963)

Lite

- Fixed `shuffle=False` having no effect when using DDP/DistributedSampler (15931)

Pytorch

Changed

- Direct support for compiled models (15922)

Fixed

- Fixed issue with unsupported torch.inference_mode() on hpu backends (15918)
- Fixed LRScheduler import for PyTorch 2.0 (15940)
- Fixed `fit_loop.restarting` to be `False` for lr finder (15620)
- Fixed `torch.jit.script`-ing a LightningModule causing an unintended error message about deprecated `use_amp` property (15947)

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**Full Changelog**: https://github.com/Lightning-AI/lightning/compare/1.8.3...1.8.4

:robot:

App

Changed

- Fixed the PyTorch Inference locally on GPU ([15813](https://github.com/Lightning-AI/lightning/pull/15813))

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**Full Changelog**: https://github.com/Lightning-AI/lightning/compare/1.8.3...1.8.3

App

Changed

- Deduplicate top-level lighting CLI command groups (15761)
* `lightning add ssh-key` CLI command has been transitioned to `lightning create ssh-key`
* `lightning remove ssh-key` CLI command has been transitioned to `lightning delete ssh-key`
- Set Torch inference mode for prediction (15719)
- Improved `LightningTrainerScript` start-up time (15751)
- Disable XSRF protection in `StreamlitFrontend` to support upload in localhost (15684)

Fixed

- Fixed debugging with VSCode IDE (15747)
- Fixed setting property to the `LightningFlow` (15750)

Lite

Changed

- Temporarily removed support for Hydra multi-run (15737)

Pytorch

Changed

- Temporarily removed support for Hydra multi-run (15737)
- Switch from `tensorboard` to `tensorboardx` in `TensorBoardLogger` (15728)

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**Full Changelog**: https://github.com/Lightning-AI/lightning/compare/1.8.2...1.8.3