MPICH is a high-performance and widely portable implementation of the Message Passing Interface (MPI) standard (MPI-1, MPI-2 and MPI-3). The goals of MPICH are: to provide an MPI implementation that efficiently supports different computation and communication platforms including commodity clusters, high-speed networks and proprietary high-end computing systems, and to enable cutting-edge research in MPI through an easy-to-extend modular framework for other derived implementations.