The Open MPI Project is an open source MPI-2 implementation that is
developed and maintained by a consortium of academic, research, and
industry partners. Open MPI is therefore able to combine the expertise,
technologies, and resources from all across the High Performance
Computing community in order to build the best MPI library available.
Open MPI offers advantages for system and software vendors, application
developers and computer science researchers.
from Andreas Bihlmaier (MAINTAINER) with minor tweaks by me
