cuda.yml

name: 🐧 CUDA

on: [push, pull_request]

concurrency:
  group: ${{ github.ref }}-${{ github.head_ref }}-cuda
  cancel-in-progress: true

jobs:
# Ref.:
#   https://gitlab.com/nvidia/container-images/cuda/-/blob/master/dist/ubuntu18.04/10.1/base/Dockerfile
#   https://github.com/ComputationalRadiationPhysics/picongpu/blob/0.5.0/share/picongpu/dockerfiles/ubuntu-1604/Dockerfile
#   https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/
  build_nvcc:
    name: NVCC 11.3.1 SP
    runs-on: ubuntu-20.04
    if: github.event.pull_request.draft == false
    env:
      CXXFLAGS: "-Werror"
      CMAKE_GENERATOR: Ninja
    steps:
    - uses: actions/checkout@v4

    - name: install dependencies
      run: |
        .github/workflows/dependencies/nvcc11-openmpi.sh

    - name: CCache Cache
      uses: actions/cache@v4
      # - once stored under a key, they become immutable (even if local cache path content changes)
      # - for a refresh the key has to change, e.g., hash of a tracked file in the key
      with:
        path: |
          ~/.ccache
          ~/.cache/ccache
        key: ccache-cuda-nvcc-${{ hashFiles('.github/workflows/cuda.yml') }}-${{ hashFiles('cmake/dependencies/ABLASTR.cmake') }}
        restore-keys: |
          ccache-cuda-nvcc-${{ hashFiles('.github/workflows/cuda.yml') }}-
          ccache-cuda-nvcc-

    - name: build ImpactX
      run: |
        export PATH=/usr/local/nvidia/bin:/usr/local/cuda/bin:${PATH}
        export LD_LIBRARY_PATH=/usr/local/nvidia/lib:/usr/local/nvidia/lib64:/usr/local/cuda/lib64:${LD_LIBRARY_PATH}
        which nvcc || echo "nvcc not in PATH!"

        cmake -S . -B build            \
          -DCMAKE_VERBOSE_MAKEFILE=ON  \
          -DImpactX_COMPUTE=CUDA       \
          -DImpactX_FFT=ON             \
          -DImpactX_PYTHON=ON          \
          -DAMReX_CUDA_ARCH=6.0        \
          -DImpactX_PRECISION=SINGLE   \
          -DAMReX_CUDA_ERROR_CROSS_EXECUTION_SPACE_CALL=ON \
          -DAMReX_CUDA_ERROR_CAPTURE_THIS=ON
        cmake --build build -j 4