Execute serial and parallel jobs in Open MPI. See also:
mpic++. More information: https://docs.open-mpi.org/en/main/man-openmpi/man1/mpirun.1.html.
mpirun {{path/to/executable}}
n parallel processes:mpirun -n {{n}} {{path/to/executable}}
mpirun -oversubscribe {{path/to/executable}}