A new stable release candidate of MPICH, 4.3.2rc1, 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 4.3.2 GA release. Please give it a try! You can find the release on our downloads page (https://urldefense.us/v3/__https://www.mpich.org/downloads/__;!!G_uCfscf7eWS... ) 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 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