parallel_test.yml

# Run tests in parallel to check for bugs that only show up on multiple processes
name: Run tests in parallel

on: [push, pull_request]

jobs:
  test:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macOS-latest]
      fail-fast: false
    timeout-minutes: 60

    steps:
      - uses: actions/checkout@v2
      - uses: mpi4py/setup-mpi@v1
        with:
          mpi: 'openmpi'
      - uses: julia-actions/setup-julia@v1
        with:
          version: '1.7.2'
          arch: x64
      - uses: julia-actions/julia-buildpkg@v1
      - run: |
          julia --project -e 'ENV["JULIA_MPI_BINARY"]="system"; using Pkg; Pkg.build("MPI"; verbose=true)'
          julia -O3 --check-bounds=no precompile.jl --debug 1
          # Need to use openmpi so that the following arguments work:
          # * `--mca rmaps_base_oversubscribe 1` allows oversubscription (more processes
          #   than physical cores).
          # * `--mca mpi_yield_when_idle 1` changes a setting to prevent excessively
          #   terrible performance when oversubscribing.
          mpiexec -np 2 --mca rmaps_base_oversubscribe 1 julia --project=@. -Jmoment_kinetics.so -O3 --check-bounds=no test/runtests.jl --debug 1 --long
          mpiexec -np 3 --mca rmaps_base_oversubscribe 1 julia --project=@. -Jmoment_kinetics.so -O3 --check-bounds=no test/runtests.jl --debug 1 --long
          mpiexec -np 4 --mca rmaps_base_oversubscribe 1 julia --project=@. -Jmoment_kinetics.so -O3 --check-bounds=no test/runtests.jl --debug 1 --long
          # Note: MPI.jl's default implementation is mpich, which has a similar option
          # `--with-device=ch3:sock`, but that needs to be set when compiling mpich.
        shell: bash