A new stable release candidate of MPICH, 4.3.1rc1, is now available for download. See the CHANGES below for a detailed list of fixes.

At this stage, only critical bugs will be fixed before the 4.3.1 GA release. Please give it a try!

You can find the release on our downloads page (https://www.mpich.org/downloads/)

Regards,
The MPICH team

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                          Changes in 4.3.1

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# 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