Hello, Angel de Vicente <angel.de.vice...@iac.es> writes:
> Do you know how I could fix this while keeping the cgroup plugin? My > intuition tells me that I should probably get the latest version of > Slurm and compile it myself, but I thought I would ask here before going > that route. I followed my intuition and got much closer to fixing it. So far I learned the following: + the older Slurm seems to only support cgroup v1 + Ubuntu 18.04 seems to be in a "Hybrid" cgroup mode + Ubuntu 22.04 is in "V2" mode: So, I compiled in Ubuntu 22.04 a newer Slurm version (22.05.8), which has support for both cgroup v1 and v2. But when starting this version, slurmd complains with: ,---- | slurmd: fatal: Hybrid mode is not supported. Mounted cgroups are: | 5:freezer:/ | 3:cpuacct:/ `---- If I unmount /cgroup/freezer and /cgroup/cpuacct then all works fine with Slurm, but I'm not sure where/who is mounting these, and whether it is safe to unmount them. These machines were being upgraded from 18.04, so not sure if these are leftovers from that version or a completely new 22.04 installation would also have these. Cheers, -- Ángel de Vicente Research Software Engineer (Supercomputing and BigData) Tel.: +34 922-605-747 Web.: http://research.iac.es/proyecto/polmag/ GPG: 0x8BDC390B69033F52
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