# Continuous Integration and Delivery
Brief description of all our automation tools used for boosting development performances.
## Unit and Integration Testing
| workflow file | action | accelerator |
| -------------------------------------- | ----------------------------------------------------------------------------------------- | ----------- |
| .github/workflows/ci-tests-app.yml | Run all tests (may need internet connectivity). | CPU |
| .github/workflows/ci-tests-fabric.yml | Run all tests except for accelerator-specific and standalone. | CPU |
| .github/workflows/ci-tests-pytorch.yml | Run all tests except for accelerator-specific and standalone. | CPU |
| .github/workflows/ci-tests-data.yml | Run unit and integration tests with data pipelining. | CPU |
| .github/workflows/ci-tests-store.yml | Run integration tests on uploading models to cloud. | CPU |
| .azure-pipelines/gpu-tests-fabric.yml | Run only GPU-specific tests, standalone\*, and examples. | GPU |
| .azure-pipelines/gpu-tests-pytorch.yml | Run only GPU-specific tests, standalone\*, and examples. | GPU |
| .azure-pipelines/gpu-benchmarks.yml | Run speed/memory benchmarks for parity with vanila PyTorch. | GPU |
| .github/workflows/ci-examples-app.yml | Run integration tests with App examples. | CPU |
| .github/workflows/ci-flagship-apps.yml | Run end-2-end tests with full applications, including deployment to the production cloud. | CPU |
| .github/workflows/ci-tests-pytorch.yml | Run all tests except for accelerator-specific, standalone and slow tests. | CPU |
| .github/workflows/tpu-tests.yml | Run only TPU-specific tests. Requires that the PR title contains '\[TPU\]' | TPU |
\* Each standalone test needs to be run in separate processes to avoid unwanted interactions between test cases.
- Accelerators used in CI
- GPU: 2 x NVIDIA RTX 3090
- TPU: [Google TPU v4-8](https://cloud.google.com/tpu/docs)
- To check which versions of Python or PyTorch are used for testing in our CI, see the corresponding workflow files or checkgroup config file at [`.github/checkgroup.yml`](../checkgroup.yml).
## Documentation
| workflow file | action |
| ------------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
| .github/workflows/docs-build.yml | Run doctest, linkcheck and full HTML build. |
| .github/workflows/ci-rtfd.yml | Append link to the PR description with temporaty ReadTheDocs build docs. |
| .github/workflows/ci-check-md-links.yml
.github/markdown.links.config.json | Validate links in markdown files. |
## Code Quality
| workflow file | action |
| --------------------------------- | ----------------------------------------------------------------------------------------- |
| .codecov.yml | Measure test coverage with [codecov.io](https://app.codecov.io/gh/Lightning-AI/lightning) |
| .github/workflows/code-checks.yml | Check Python typing with [MyPy](https://mypy.readthedocs.io/en/stable/). |
| .github/workflows/ci-schema.yml | Validate the syntax of workflow files. |
## Others
| workflow file | action |
| ------------------------------------ | ----------------------------------------------------------------------------------------------- |
| .github/workflows/docker-build.yml | Build docker images used for testing in CI. If run on nightly schedule, push to the Docker Hub. |
| .github/workflows/ci-pkg-install.yml | Test if pytorch-lightning is successfully installed using pip. |
| .github/workflows/ci-checkpoints.yml | Build checkpoints that are will be tested on release to ensure backwards-compatibility |
The published Docker Hub project is https://hub.docker.com/r/pytorchlightning/pytorch_lightning.
## Deployment
| workflow file | action |
| ------------------------------------------ | ------------------------------------------------------------------------------ |
| .github/workflows/docs-build.yml | Build the docs for each project and puch it to GCS with automatics deployment. |
| .github/workflows/docker-build.yml | Build docker images used for releases and push them to the Docker Hub. |
| .github/workflows/release-pkg.yml | Publish a release to PyPI and upload to the GH release page as artifact. |
| .github/workflows/\_legacy-checkpoints.yml | Add on request generate legacy checkpoints and upload them to AWS S3. |
## Bots
| workflow file | action |
| ---------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- |
| .github/mergify.yml | Label PRs as conflicts or ready, and request reviews if needed. |
| .github/stale.yml | Close inactive issues/PRs sometimes after adding the "won't fix" label to them. |
| .github/workflows/probot-auto-cc.yml
.github/lightning-probot.yml | Notify maintainers of interest depending on labels added to an issue We utilize lightning-probot forked from PyTorch’s probot. |
| .github/workflows/probot-check-group.yml
.github/checkgroup.yml | Checks whether the relevant jobs were successfully run based on the changed files in the PR |
| .pre-commit-config.yaml | It applies a set of linters and formatters and can be registered with your local dev. If needed [bot](https://pre-commit.ci/) pushc changes to each PRs. |
| .github/workflows/labeler-pr.yml, .github/label-change.yml | Integration of https://github.com/actions/labeler |
| .github/workflows/labeler-issue.yml | Parse user provided `lightning` version and set it as label. |