Merge pull request #121 from PyLops/bug-vstack #345

	name: PyLops-MPI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	workflow_dispatch:

	jobs:
	build:
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	python-version: ['3.9', '3.10', '3.11', '3.12']
	mpi: ['mpich', 'openmpi', 'intelmpi']
	rank: ['2', '3', '4']
	exclude:
	- os: macos-latest
	mpi: 'intelmpi'
	# MPICH v4 fails on Ubuntu for Python <3.10
	# ”libfabric EFA provider is operating in a
	# condition that could result in memory
	# corruption”
	- os: ubuntu-latest
	python-version: '3.8'
	mpi: 'mpich'
	- os: ubuntu-latest
	python-version: '3.9'
	mpi: 'mpich'
	runs-on: ${{ matrix.os }}
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Get history and tags for SCM versioning to work
	run: \|
	git fetch --prune --unshallow
	git fetch --depth=1 origin +refs/tags/:refs/tags/
	- name: Setup MPI
	uses: mpi4py/setup-mpi@v1
	with:
	mpi: ${{ matrix.mpi }}
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Installing Dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	if [ -f requirements.txt ]; then pip install -r requirements-dev.txt; fi
	- name: Install pylops-mpi
	run: pip install .
	- name: Testing using pytest-mpi
	run: mpiexec -n ${{ matrix.rank }} pytest --with-mpi

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