Hi, All I want to check the behavior of MaxKmemPercent in cgroup.conf. In the following configuration, I thought that 'kmem.limit_in_bytes' would be 1G by MaxKmemPercent(RealMemory=1024). However, the value of AllowedKmemSpace(104857600) was set to kmem.limit_in_bytes. Please tell me how to confirm MaxKmemPercent.
[root@ohpc137pbsop-sms ~]# scontrol show node ohpc137pbsop-c001 NodeName=ohpc137pbsop-c001 Arch=x86_64 CoresPerSocket=12 CPUAlloc=2 CPUTot=48 CPULoad=0.84 AvailableFeatures=(null) ActiveFeatures=(null) Gres=(null) NodeAddr=ohpc137pbsop-c001 NodeHostName=ohpc137pbsop-c001 Version=18.08 OS=Linux 3.10.0-957.10.1.el7.x86_64 #1 SMP Thu Feb 7 07:12:53 UTC 2019 RealMemory=1024 AllocMem=1024 FreeMem=190328 Sockets=2 Boards=1 State=MIXED ThreadsPerCore=2 TmpDisk=4096 Weight=1 Owner=N/A MCS_label=N/A Partitions=normal BootTime=2019-12-24T13:40:27 SlurmdStartTime=2019-12-24T14:21:40 CfgTRES=cpu=48,mem=1G,billing=48 AllocTRES=cpu=2,mem=1G CapWatts=n/a CurrentWatts=0 LowestJoules=0 ConsumedJoules=0 ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s [root@ohpc137pbsop-sms ~]# cat /etc/slurm/cgroup.conf ### # # Slurm cgroup support configuration file # # See man slurm.conf and man cgroup.conf for further # information on cgroup configuration parameters #-- ConstrainCores=yes TaskAffinity=no CgroupMountpoint=/cgroup CgroupAutomount=yes ConstrainRAMSpace=yes ConstrainKmemSpace=yes ConstrainDevices=no AllowedKmemSpace=104857600 MaxKmemPercent=100 MinKmemSpace=30 [root@ohpc137pbsop-sms ~]# [test@ohpc137pbsop-sms ~]$ cat yes.sh #!/bin/bash #SBATCH -J yes # Job name #SBATCH -o job.%j.out # Name of stdout output file (%j expands to jobId) srun yes > /dev/null [test@ohpc137pbsop-sms ~]$ sbatch yes.sh Submitted batch job 160 [test@ohpc137pbsop-sms ~]$ [root@ohpc137pbsop-c001 ~]# lscgroup |grep slurm pids:/system.slice/slurmd.service cpu,cpuacct:/system.slice/slurmd.service freezer:/slurm freezer:/slurm/uid_1001 freezer:/slurm/uid_1001/job_159 freezer:/slurm/uid_1001/job_159/step_0 freezer:/slurm/uid_1001/job_159/step_batch blkio:/system.slice/slurmd.service devices:/system.slice/slurmd.service cpuset:/slurm cpuset:/slurm/uid_1001 cpuset:/slurm/uid_1001/job_159 cpuset:/slurm/uid_1001/job_159/step_0 cpuset:/slurm/uid_1001/job_159/step_batch memory:/slurm memory:/slurm/uid_1001 memory:/slurm/uid_1001/job_159 memory:/slurm/uid_1001/job_159/step_0 memory:/slurm/uid_1001/job_159/step_batch [root@ohpc137pbsop-c001 ~]# [root@ohpc137pbsop-c001 step_0]# cat /cgroup/memory/slurm/uid_1001/job_159/step_0/memory.kmem.limit_in_bytes 104857600 [root@ohpc137pbsop-c001 step_0]#
