Greetings,
I'm using ubuntu-18.04 and slurm-18.08.1 compiled from source. I followed the directions on: https://slurm.schedmd.com/cgroups.html And: https://slurm.schedmd.com/cgroup.conf.html That resulted in: $ cat slurm.conf | egrep -i "cgroup|CR_" ProctrackType=proctrack/cgroup TaskPlugin=task/cgroup SelectTypeParameters=CR_CPU_MEMORY JobAcctGatherType=jobacct_gather/cgroup $ cat /etc/default/grub | grep GRUB_CMDLINE_LINUX= GRUB_CMDLINE_LINUX='cgroup_enable=memory swapaccount=1 console=tty0 transparent_hugepage=madvise console=ttyS0,57600' $ cat cgroup.conf CgroupAutomount=yes ConstrainCores=yes ConstrainDevices=yes ConstrainRAMSpace=yes ConstrainSwapSpace=yes MaxSwapPercent=0 AllowedSwapSpace=0 So I expect jobs to not use swap. Turns out if I run a 3GB ram process with sbatch --mem=1000 I just get a process that uses 1GB ram and 2GB of swap. So a 3GB process with --mem=1000: $ ps acux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND bill 17698 11.1 1.5 2817020 1015392 ? D 20:40 0:13 stream\ $ smem User Count Swap USS PSS RSS bill 1 1795552 1017048 1017076 1018492 With --mem=3000 zero swap is used and the job consumes 100% of a CPU.
