[mpich-announce] MPICH 4.3.2 released

Raffenetti, Ken raffenet at anl.gov
Mon Oct 6 12:52:03 CDT 2025


A new stable release of MPICH, 4.3.2, is now available for download. Thanks to everyone who contributed to the release! See 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!anW_RMk_yRIefEBgZwirgNOMSSn13UKpPVIIZMGu22PmphrmVkmhQDtQI6LoIfnLeuIctgH_s6uCSR3z$ )

Regards,
The MPICH team

===============================================================================
                               Changes in 4.3.2
===============================================================================
# Improve libfabric provider selection when available providers have
  negative internal score

# Improve error messages when Level Zero failures are detected

# Improve localhost detection in Hydra

# Update libfabric usage to silence deprecation warnings

# Update yaksa for improved reproducibility in code generation

# Update embedded UCX to v1.19.0

# Update embedded libfabric to fix build issue with GCC 15

# Add compatibility with CUDA 13

# Fix missing const in nondestructive request test and status query
  functions

# Fix HCOLL support

# Fix crash with GPU-aware build when running on systems with no GPUs

# Fix HIP device query

# Fix singleton init with Hydra

# Fix thread safety for Level Zero memcpy functions

# Fix potential crash when release gather collective initialization fails

# Fix ch3 connect/accept protocol handling when a discard event arrives
  after a connection is already established

# Fix inlining for posix eager modules in ch4/shm

# Fix weak attribute usage in MPI ABI build

# Fix potential use-after-free bug in Hydra during spawn operations

# Fix bug in persistent bcast algorithm

# Fix bug in fabric coordinate retrieval with PMIx

# Fix integer overflow and signed/unsigned bugs in ROMIO

# Fix Quobtye ROMIO driver build error

# Fix broken string conversion in mpi_f08 module

# Fix compilation issue with mpi_f08 and NAG compiler

# Fixes for various test program bugs
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