Mpich

MPICH is a free portable implementation of the MPI. MPI is a standard for data exchange messages in distributed computer networks, which are used for parallel computing. MPICH is free software, and for most Unix and Linux platforms, Mac OS X and Microsoft Windows. MPICH is a program library.

The first implementation of MPICH is MPICH1 and implements the MPI standard in version 1.1. At present, the current implementation is MPICH2 MPI 2.0. Exchange of data between different hardware platforms is not yet supported.