We are happy to announce that we just released MPICH-5.0.0rc1.  This is the first release candidate for MPICH-5.0.0. It contains some bug fixes and improvements since MPICH-5.0.0b1. See the list of changes below. The release tarball can be found on our downloads page (https://www.mpich.org/downloads). Please test.
List of changes since v5.0.0b1:
   yaksa: fix automatic compilation for CUDA 13    ch4: shm: fix data type for recv_bytes in MPIDI_POSIX_mpi_release_gat…    abi: fix MPI_Abi_get_fortran_info    yaksa: update to sync-up with yaksa repo    ch4: use larger initial av_tables size    autogen: pre-run libtoolize if necessary    ch4/win: refactor win_shm_alloc_impl    hydra: do not use -lhydra to link    build: miscellaneous configure and build issues    Fix data races found by ThreadSanitizer    cma: fix CMA detection    makefile: fix missing semicolon in `uninstall-local`    abi: do not convert builtin handles in _{from,to}int    hydra: fix standalone build on MacOS    ch4/progress: fine-tune progress throttle    init: add commit hash to DEBUG_SUMMARY    misc: ci warnings rollup    common/genq: fix false sharing and alignment issue in shared pool    misc: fine tune default fast copy threshold
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Hui Zhou on behalf of MPICH Team