A new stable release of MPICH, 4.2.2, is now available for download. This is the second 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/v4.2.1…v4.2.2/
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Changes in 4.2.2
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# Update embedded libfabric to v1.20.1 and fix compilation with GCC 14.
# Fix dataloop support for MPIX_Type_iov routines
# Fix crash in Hydra when system has many local ip addresses
# Fix RMA fallback check in ch4:ofi netmod
# Fix MPI_UNDEFINED handling in mpi_f08 module
# Fix Slurm environment variable inheritance in Hydra
# Fix multiple issues with large count support in ROMIO
# Fix potential hang in init using PMIx client and nonstandard keys
# Fix crash if PMIx client cannot get appnum from server during init
# Fix other build errors and warnings 