[mpich-announce] MPICH 4.3.1 released

Raffenetti, Ken raffenet at anl.gov
Fri Jun 20 11:26:11 CDT 2025


A new stable release of MPICH, 4.3.1, is now available for download. Thanks to everyone who contributed to the release! See the CHANGES below for a detailed list of fixes.

You can find the release on our downloads page (https://urldefense.us/v3/__https://www.mpich.org/downloads/__;!!G_uCfscf7eWS!ZJaEL8G9lg5OhxwMiUvoY2IE3WrkjbcqXF2nzeM6nnbrcNTIfCrBPgpS5oqYKOwOHgaHerszkwHZqjZi$ )

Regards,
The MPICH team

====================================================================
                          Changes in 4.3.1
====================================================================
# Fix initialization in GPU-aware builds when no devices are present

# Fix internal pmix.h header conflict when building with an external
  PMIx library.

# Fix build issue with Slurm by removing dependency on libslurm and
  always using internal logic for parsing the Slurm hostfile.

# Fix potential stale GPU IPC handle usage resulting in data corruption
  or crashes

# Update XPMEM thresholds to avoid excessive buffer mapping overhead

# Fix potential hang in ROMIO when setting info hints on certain files

# Improved detection of incompatible PMI[x] client/server configuration

# Fix use of PMIX_PREFIX attribute for certain versions of OpenPMIx

# Fix Intel GPU output with MPIR_CVAR_DEBUG_SUMMARY

# Fix F08 binding compilation with nvfortran

# Fix line continuations with Hydra's --configfile option

# Fix valgrind uninitialized read warnings in ch3

# Fix missing mpixxx_opts.conf file with help text for mpicc and friends

# Fixes for several compiler warnings
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