Hi, After upgrade to Bookworm upon `systemctl restart slurmd` I got slurmd[41362]: slurmd-hostname: error: mpi/pmix_v4: init: (null) [0]:\mpi_pmix.c:195: pmi/pmix: can not load PMIx library (in 1 physical line) That error was gone after installing package libpmix-dev. sudo apt install libpmix-dev So I think this email confirms the bug and the workaround. Regards Geert Stappers -- Silence is hard to parse