Found on the PoC (Ubuntu 24.04, Slurm 23.11.4): the packaged unit is
Type=notify, so slurmd needs --systemd or systemd times it out; and slurmd
keeps a 'slurmstepd infinity' for its cgroup v2 scope, which was counted as
a job and kept the node from llmgw.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>