MPICH is a high performance and widely portable implementation of the Message Passing Interface (MPI) standard.

MPICH and its derivatives form the most widely used implementations of MPI. They are used on many of world’s top supercomputers, including the world’s first two exascale machines (June 2024 ranking): Frontier and Aurora.

News & Events

A new stable release of MPICH, 4.2.3, is now available for download. This release addresses a number of user-reported crashes ...
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Learn about MPICH

The documentation page provides documents for installing MPICH, how to get started with MPI, and how to run MPI applications. It also includes tutorials, publications and other documents for developers.
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Support

The support page provides help for MPICH users and developers. There are links to frequently asked questions, support mailing lists and a trac system to report new bugs.
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