Internal Program Version: openmpi4  4.1.8

OpenMPI is an implementation of the Message Passing Interface, a
standardized API typically used for parallel and/or distributed
computing. OpenMPI is the merged result of four prior implementations
where the team found for them to excel in one or more areas,
such as latency or throughput.

OpenMPI also includes an implementation of the OpenSHMEM parallel
programming API, which is a Partitioned Global Address Space (PGAS)
abstraction layer providing inter-process communication using
one-sided communication techniques.

This package provides general tools (mpirun, mpiexec, etc.) and the
Module Component Architecture (MCA) base and plugins necessary for
running Open MPI/OpenSHMEM version 4 jobs.

http://www.open-mpi.org