pr.yml

# SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This is the main workflow that runs on every PR and push to main
name: pr

defaults:
  run:
    shell: bash -euo pipefail {0}

on:
  push:
    branches:
      - main
      - "pull-request/[0-9]+"

# Only runs one instance of this workflow at a time for a given PR and cancels any in-progress runs when a new one starts.
concurrency:
  group: ${{ github.workflow }}-on-${{ github.event_name }}-from-${{ github.ref_name }}
  cancel-in-progress: true

jobs:
  
  get-devcontainer-version:
    name: Get devcontainer version
    runs-on: ubuntu-latest
    outputs:
      DEVCONTAINER_VERSION: ${{ steps.set-outputs.outputs.DEVCONTAINER_VERSION }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
      - name: Get devcontainer version
        id: set-outputs
        run: |
          DEVCONTAINER_VERSION=$(yq -o json ci/matrix.yaml | jq -r '.devcontainer_version')
          echo "DEVCONTAINER_VERSION=$DEVCONTAINER_VERSION" | tee -a "$GITHUB_OUTPUT"

  compute-nvcc-matrix:
    name: Compute NVCC matrix
    runs-on: ubuntu-latest
    outputs:
      FULL_MATRIX: ${{ steps.set-outputs.outputs.FULL_MATRIX }}
      CUDA_VERSIONS: ${{ steps.set-outputs.outputs.CUDA_VERSIONS }}
      HOST_COMPILERS: ${{ steps.set-outputs.outputs.HOST_COMPILERS }}
      PER_CUDA_COMPILER_MATRIX: ${{ steps.set-outputs.outputs.PER_CUDA_COMPILER_MATRIX }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
      - name: Get full nvcc matrix
        id: compute-nvcc-matrix
        uses: ./.github/actions/compute-matrix
        with:
          matrix_file: './ci/matrix.yaml'
          matrix_query: '.pull_request.nvcc'
      - name: Set outputs
        id: set-outputs
        run: |
          FULL_MATRIX='${{steps.compute-nvcc-matrix.outputs.matrix}}'
          echo "FULL_MATRIX=$FULL_MATRIX" | tee -a "$GITHUB_OUTPUT"
          CUDA_VERSIONS=$(echo $FULL_MATRIX | jq -c '[.[] | .cuda] | unique')
          echo "CUDA_VERSIONS=$CUDA_VERSIONS" | tee -a "$GITHUB_OUTPUT"
          HOST_COMPILERS=$(echo $FULL_MATRIX | jq -c '[.[] | .compiler.name] | unique')
          echo "HOST_COMPILERS=$HOST_COMPILERS" | tee -a "$GITHUB_OUTPUT"
          PER_CUDA_COMPILER_MATRIX=$(echo $FULL_MATRIX | jq -c ' group_by(.cuda + .compiler.name) | map({(.[0].cuda + "-" + .[0].compiler.name): .}) | add')
          echo "PER_CUDA_COMPILER_MATRIX=$PER_CUDA_COMPILER_MATRIX" | tee -a "$GITHUB_OUTPUT"

  thrust:
    name: Thrust CUDA${{ matrix.cuda_version }} ${{ matrix.compiler }}
    needs: [compute-nvcc-matrix, get-devcontainer-version]
    uses: ./.github/workflows/dispatch-build-and-test.yml
    strategy:
      fail-fast: false
      matrix: 
        cuda_version: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.CUDA_VERSIONS) }} 
        compiler: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.HOST_COMPILERS) }}
    with:
      per_cuda_compiler_matrix: ${{ toJSON(fromJSON(needs.compute-nvcc-matrix.outputs.PER_CUDA_COMPILER_MATRIX)[ format('{0}-{1}', matrix.cuda_version, matrix.compiler) ]) }}
      build_script: "./ci/build_thrust.sh"
      test_script: "./ci/test_thrust.sh"
      devcontainer_version: ${{ needs.get-devcontainer-version.outputs.DEVCONTAINER_VERSION }}

  cub:
    name: CUB CUDA${{ matrix.cuda_version }} ${{ matrix.compiler }}
    needs: [compute-nvcc-matrix, get-devcontainer-version]
    uses: ./.github/workflows/dispatch-build-and-test.yml
    strategy:
      fail-fast: false
      matrix: 
        cuda_version: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.CUDA_VERSIONS) }} 
        compiler: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.HOST_COMPILERS) }}
    with:
      per_cuda_compiler_matrix: ${{ toJSON(fromJSON(needs.compute-nvcc-matrix.outputs.PER_CUDA_COMPILER_MATRIX)[ format('{0}-{1}', matrix.cuda_version, matrix.compiler) ]) }}
      build_script: "./ci/build_cub.sh"
      test_script: "./ci/test_cub.sh"
      devcontainer_version: ${{ needs.get-devcontainer-version.outputs.DEVCONTAINER_VERSION }}
  
  libcudacxx:
    name: libcudacxx CUDA${{ matrix.cuda_version }} ${{ matrix.compiler }}
    needs: [compute-nvcc-matrix, get-devcontainer-version]
    uses: ./.github/workflows/dispatch-build-and-test.yml
    strategy:
      fail-fast: false
      matrix: 
        cuda_version: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.CUDA_VERSIONS) }} 
        compiler: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.HOST_COMPILERS) }}
    with:
      per_cuda_compiler_matrix: ${{ toJSON(fromJSON(needs.compute-nvcc-matrix.outputs.PER_CUDA_COMPILER_MATRIX)[ format('{0}-{1}', matrix.cuda_version, matrix.compiler) ]) }}
      build_script: "./ci/build_libcudacxx.sh"
      test_script: "./ci/test_libcudacxx.sh" 
      devcontainer_version: ${{ needs.get-devcontainer-version.outputs.DEVCONTAINER_VERSION }}
  
  examples:
    name: CCCL Examples
    needs: [compute-nvcc-matrix, get-devcontainer-version]
    strategy:
      fail-fast: false
      matrix: 
        include: ${{ fromJSON(needs.compute-nvcc-matrix.outputs.FULL_MATRIX) }}
    uses: ./.github/workflows/run-as-coder.yml
    with:
      name: CCCL Examples CUDA${{matrix.cuda}} ${{matrix.compiler.name}}${{matrix.compiler.version}}
      runner: linux-${{matrix.cpu}}-gpu-v100-latest-1
      image: rapidsai/devcontainers:${{needs.get-devcontainer-version.outputs.DEVCONTAINER_VERSION}}-cpp-${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}-${{matrix.os}}
      command: |
        cmake -S . --preset=examples -DCCCL_EXAMPLE_CPM_TAG=${GITHUB_SHA} -DCMAKE_CUDA_COMPILER=nvcc
        ctest --preset=examples

  # This job is the final job that runs after all other jobs and is used for branch protection status checks.
  # See: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/about-status-checks
  ci:
    runs-on: ubuntu-latest
    name: CI
    needs:
      - libcudacxx
      - cub
      - thrust
      - examples
    steps:
      - run: echo "CI success"