mpi: Add basic2 mode #6286

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	1m 54s
pytest-ubuntu-py311-gcc11-noomp-adjoint	2m 0s
pytest-ubuntu-py38-gcc12-omp-base	1m 55s
pytest-ubuntu-py38-gcc12-omp-adjoint	1m 54s
pytest-ubuntu-py37-gcc7-omp-base	1m 45s
pytest-ubuntu-py37-gcc7-omp-adjoint	1m 57s
pytest-ubuntu-py310-gcc10-noomp-base	1m 54s
pytest-ubuntu-py310-gcc10-noomp-adjoint	1m 57s
pytest-ubuntu-py312-gcc13-omp-base	1m 58s
pytest-ubuntu-py312-gcc13-omp-adjoint	1m 57s
pytest-ubuntu-py39-gcc9-omp-base	1m 54s
pytest-ubuntu-py39-gcc9-omp-adjoint	1m 56s
pytest-osx-py37-clang-omp-base	1m 53s
pytest-docker-py39-gcc-omp-base	2m 2s
pytest-docker-py39-gcc-omp-adjoint	1m 59s
pytest-docker-py39-icx-omp-base	1m 57s
pytest-docker-py39-icx-omp-adjoint	1m 54s
	32m 46s

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