gpu_pcc.yml

# Perfom tfhe-cuda-backend post-commit checks on an AWS instance
name: TFHE Cuda Backend - Post-commit Checks

env:
  CARGO_TERM_COLOR: always
  ACTION_RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
  RUSTFLAGS: "-C target-cpu=native"
  RUST_BACKTRACE: "full"
  RUST_MIN_STACK: "8388608"
  SLACK_CHANNEL: ${{ secrets.SLACK_CHANNEL }}
  SLACK_ICON: https://pbs.twimg.com/profile_images/1274014582265298945/OjBKP9kn_400x400.png
  SLACK_USERNAME: ${{ secrets.BOT_USERNAME }}
  SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
  MSG_MINIMAL: event,action url,commit
  BRANCH: ${{ github.head_ref || github.ref }}
  REF: ${{ github.event.pull_request.head.sha || github.sha }}

on:
  # Trigger pull_request event on CI files to be able to test changes before merging to main branch.
  # Workflow would fail if changes come from a forked repository since secrets are not available with this event.
  pull_request:
    paths:
      - '.github/**'
      - 'ci/**'
  # General entry point for Zama's pull request as well as contribution from forks.
  pull_request_target:
    paths:
      - '**'
      - '!.github/**'
      - '!ci/**'

jobs:
  check-ci-files:
    uses: ./.github/workflows/check_ci_files_change.yml
    with:
      checkout_ref: ${{ github.event.pull_request.head.sha || github.sha }}
    secrets:
      REPO_CHECKOUT_TOKEN: ${{ secrets.REPO_CHECKOUT_TOKEN }}

  # Fail if the triggering actor is not part of Zama organization.
  # If pull_request_target is emitted and CI files have changed, skip this job. This would skip following jobs.
  check-user-permission:
    needs: check-ci-files
    if: github.event_name != 'pull_request_target' ||
      (github.event_name == 'pull_request_target' && needs.check-ci-files.outputs.ci_file_changed == 'false')
    uses: ./.github/workflows/check_triggering_actor.yml@${{ github.sha }}
    secrets:
      TOKEN: ${{ secrets.GITHUB_TOKEN }}

  setup-instance:
    name: Setup instance (cuda-pcc)
    needs: check-user-permission
    runs-on: ubuntu-latest
    outputs:
      runner-name: ${{ steps.start-instance.outputs.label }}
    steps:
      - name: Start instance
        id: start-instance
        uses: zama-ai/slab-github-runner@79939325c3c429837c10d6041e4fd8589d328bac
        with:
          mode: start
          github-token: ${{ secrets.SLAB_ACTION_TOKEN }}
          slab-url: ${{ secrets.SLAB_BASE_URL }}
          job-secret: ${{ secrets.JOB_SECRET }}
          backend: aws
          profile: gpu-build

  cuda-pcc:
    name: CUDA post-commit checks
    needs: setup-instance
    concurrency:
      group: ${{ github.workflow }}_${{ github.head_ref || github.ref }}
      cancel-in-progress: true
    runs-on: ${{ needs.setup-instance.outputs.runner-name }}
    strategy:
      fail-fast: false
      # explicit include-based build matrix, of known valid options
      matrix:
        include:
          - os: ubuntu-22.04
            cuda: "12.2"
            gcc: 9
    env:
      CUDA_PATH: /usr/local/cuda-${{ matrix.cuda }}

    steps:
      - name: Checkout tfhe-rs
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
        with:
          persist-credentials: 'false'
          token: ${{ secrets.REPO_CHECKOUT_TOKEN }}
          ref: ${{ env.REF }}

      - name: Set up home
        run: |
          echo "HOME=/home/ubuntu" >> "${GITHUB_ENV}"

      - name: Install latest stable
        uses: dtolnay/rust-toolchain@a54c7afa936fefeb4456b2dd8068152669aa8203
        with:
          toolchain: stable

      - name: Export CUDA variables
        if: ${{ !cancelled() }}
        run: |
          echo "CUDA_PATH=$CUDA_PATH" >> "${GITHUB_ENV}"
          echo "$CUDA_PATH/bin" >> "${GITHUB_PATH}"
          echo "LD_LIBRARY_PATH=$CUDA_PATH/lib:$LD_LIBRARY_PATH" >> "${GITHUB_ENV}"
          echo "CUDACXX=/usr/local/cuda-${{ matrix.cuda }}/bin/nvcc" >> "${GITHUB_ENV}"

      # Specify the correct host compilers
      - name: Export gcc and g++ variables
        if: ${{ !cancelled() }}
        run: |
          {
            echo "CC=/usr/bin/gcc-${{ matrix.gcc }}";
            echo "CXX=/usr/bin/g++-${{ matrix.gcc }}";
            echo "CUDAHOSTCXX=/usr/bin/g++-${{ matrix.gcc }}";
            echo "HOME=/home/ubuntu";
          } >> "${GITHUB_ENV}"

      - name: Run fmt checks
        run: |
          make check_fmt_gpu

      - name: Run clippy checks
        run: |
          make pcc_gpu

      - name: Slack Notification
        if: ${{ failure() }}
        continue-on-error: true
        uses: rtCamp/action-slack-notify@c33737706dea87cd7784c687dadc9adf1be59990
        env:
          SLACK_COLOR: ${{ job.status }}
          SLACK_MESSAGE: "CUDA AWS post-commit checks finished with status: ${{ job.status }} on '${{ env.BRANCH }}'. (${{ env.ACTION_RUN_URL }})"

  teardown-instance:
    name: Teardown instance (cuda-pcc)
    if: ${{ always() && needs.setup-instance.result == 'success' }}
    needs: [ setup-instance, cuda-pcc ]
    runs-on: ubuntu-latest
    steps:
      - name: Stop instance
        id: stop-instance
        uses: zama-ai/slab-github-runner@79939325c3c429837c10d6041e4fd8589d328bac
        with:
          mode: stop
          github-token: ${{ secrets.SLAB_ACTION_TOKEN }}
          slab-url: ${{ secrets.SLAB_BASE_URL }}
          job-secret: ${{ secrets.JOB_SECRET }}
          label: ${{ needs.setup-instance.outputs.runner-name }}

      - name: Slack Notification
        if: ${{ failure() }}
        continue-on-error: true
        uses: rtCamp/action-slack-notify@c33737706dea87cd7784c687dadc9adf1be59990
        env:
          SLACK_COLOR: ${{ job.status }}
          SLACK_MESSAGE: "Instance teardown (cuda-pcc) finished with status: ${{ job.status }} on '${{ env.BRANCH }}'. (${{ env.ACTION_RUN_URL }})"