(apr) adding APR #1709

	name: mpi

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	test:
	strategy:
	fail-fast: false
	matrix:
	debug:
	- no
	- yes
	openmp:
	- no
	- yes
	ntasks:
	- 1
	- 2
	input: # [SETUP, phantom_tests]
	- ['test', '']
	- ['testkd', '']
	- ['testdust', 'dust']
	- ['testgr', 'gr']
	- ['testgrav', 'gravity ptmass']
	- ['testgrowth', 'dustgrowth']
	- ['testnimhd', 'nimhd']
	- ['test2', '']
	- ['testcyl', '']

	name: \|
	MPI test (SETUP=${{ matrix.input[0] }},
	targets=${{ matrix.input[1] }},
	DEBUG=${{ matrix.debug }},
	OPENMP=${{ matrix.openmp }},
	ntasks=${{ matrix.ntasks }})


	runs-on: ubuntu-latest

	env:
	OMP_STACKSIZE: 512M
	OMP_NUM_THREADS: 2

	steps:

	- name: Install gfortran and openMPI
	run: \|
	sudo apt-get --yes update
	sudo apt-get --yes install gfortran openmpi-bin openmpi-common libopenmpi-dev

	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v4

	- name: Compile with MPI
	run: make SETUP=${{ matrix.input[0] }} MPI=yes DEBUG=${{ matrix.debug }} OPENMP=${{ matrix.openmp }} phantomtest
	env:
	SYSTEM: gfortran

	- name: Test with MPI
	run: mpirun --allow-run-as-root -np ${{ matrix.ntasks }} --oversubscribe ./bin/phantomtest ${{ matrix.input[1] }}

	# Gather results into a dummy job that will fail if the previous job fails
	gather_results:
	if: always()
	needs:
	- test

	# This name matches the branch protection requirement
	name: mpi

	runs-on: ubuntu-latest

	steps:
	- name: Check all tests
	run: \|
	if [[ "${{ needs.test.result }}" == "success" ]]; then
	echo "All tests succeeded"
	else
	echo "At least one test failed"
	exit 1
	fi

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