MPICH 3.3.1 released

A new stable release of MPICH, 3.3.1, is now available for download. This is the first bug-fix release in the 3.3.x series. A detailed list of changes can be found here:

All production environments are encouraged to upgrade to this release.

MPICH 3.3.x contains a new (non-default) device layer implementation – CH4. CH4 is designed for low software overheads to better exploit next-generation hardware. CH4 supports network communication using the and OFI or UCX library. MPICH will build an embedded OFI or UCX if one is not available on your system. Example configure lines:

./configure --with-device=ch4:ofi [--with-libfabric=<path/to/ofi/install>] ./configure --with-device=ch4:ucx [--with-ucx=<path/to/ucx/install>]

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