A new stable release of MPICH, 4.2.1, is now available for download. This is the first bug-fix release in the 4.2.x series. This release addresses a number of user-reported crashes and build issues. It can be found on our
downloads page. For the full set of commits see
https://github.com/pmodels/mpich/compare/v4.2.0…v4.2.1/
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Changes in 4.2.1
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# Disable flat_namespace to build libmpifort on macOS by default
# Prefix warning messages with "MPICH"
# Add --disable-doc configure option
# Fix support for building MPICH Fortran support with Xcode 15 on macOS
# Fix bug in MPI_WIN_SHARED_QUERY when window is not shared
# Fix bug in ch4/ofi gpu pipelining
# Fixes for Intel GPU support
# Fix memory leak in ch4/shm collectives
# Fix bug in MPI_COMM_SPLIT with intercommunicators and non-zero root
# Fix bug in DAOS ROMIO driver
# Fix bug in cycling error code array
# Return an error if there is failure to create a datatype in mpi_f08
module for noncontiguous user data
# Return an error when shared memory segment creation fails 