[slurm-users] seff MaxRSS Above 100 Percent?

[Daryl Roche]

Hey All, 

I was just hoping to find out if anyone can explain how a job running on a 
single node was able to have a MaxRSS of 240% reported by seff. Below is some 
specifics about the job that was run. We're using slurm 19.05.7 on CentOS 8.2/
.
[root@hpc-node01 ~]# scontrol show jobid -dd 97036
JobId=97036 JobName=jobbie.sh
   UserId=username(012344321) GroupId=domain users(214400513) MCS_label=N/A
   Priority=4294842062 Nice=0 Account=(null) QOS=normal
   JobState=COMPLETED Reason=None Dependency=(null)
   Requeue=1 Restarts=0 BatchFlag=1 Reboot=0 ExitCode=0:0
   DerivedExitCode=0:0
   RunTime=00:22:35 TimeLimit=8-08:00:00 TimeMin=N/A
   SubmitTime=2022-12-02T14:27:47 EligibleTime=2022-12-02T14:27:48
   AccrueTime=2022-12-02T14:27:48
   StartTime=2022-12-02T14:27:48 EndTime=2022-12-02T14:50:23 Deadline=N/A
   SuspendTime=None SecsPreSuspend=0 LastSchedEval=2022-12-02T14:27:48
   Partition=defq AllocNode:Sid=hpc-node01:3921213
   ReqNodeList=(null) ExcNodeList=(null)
   NodeList=hpc-node11
   BatchHost=hpc-node11
   NumNodes=1 NumCPUs=40 NumTasks=0 CPUs/Task=40 ReqB:S:C:T=0:0:*:*
   TRES=cpu=40,mem=350G,node=1,billing=40
   Socks/Node=* NtasksPerN:B:S:C=0:0:*:* CoreSpec=*
     Nodes=hpc-node11 CPU_IDs=0-79 Mem=358400 GRES=
   MinCPUsNode=40 MinMemoryNode=350G MinTmpDiskNode=0
   Features=(null) DelayBoot=00:00:00
   OverSubscribe=OK Contiguous=0 Licenses=(null) Network=(null)
   Command=/path/to/scratch/jobbie.sh
   WorkDir=/path/to/scratch
   StdErr=/path/to/scratch/jobbie.sh-97036.error
   StdIn=/dev/null
   StdOut=/path/to/scratch/jobbie.sh-97036.out
   Power=

[root@hpc-node01 ~]# seff 97036
Job ID: 97036
Cluster: slurm
Use of uninitialized value $user in concatenation (.) or string at 
/cm/shared/apps/slurm/current/bin/seff line 154, <DATA> line 604.
User/Group: /domain users
State: COMPLETED (exit code 0)
Nodes: 1
Cores per node: 40
CPU Utilized: 04:43:36
CPU Efficiency: 31.39% of 15:03:20 core-walltime Job Wall-clock time: 00:22:35 
Memory Utilized: 840.21 GB Memory Efficiency: 240.06% of 350.00 GB

[root@hpc-node11 ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:         385587        2761      268544        7891      114281      371865
Swap:             0           0           0


[root@hpc-node11 ~]# cat /path/to/scratch/jobbie.sh #!/bin/bash
  
#SBATCH --mail-user=usern...@bcchr.ca
#SBATCH --mail-type=ALL

## CPU Usage
#SBATCH --mem=350G
#SBATCH --cpus-per-task=40
#SBATCH --time=200:00:00
#SBATCH --nodes=1

## Output and Stderr
#SBATCH --output=%x-%j.out
#SBATCH --error=%x-%j.error


source /path/to/tools/Miniconda3/opt/miniconda3/etc/profile.d/conda.sh
conda activate nanomethphase


# Working dir
Working_Dir=/path/to/scratch/

# Case methyl sample
Case=$Working_Dir/Case/methylation_frequency.tsv

# Control, here using a dir with both parents Control=$Working_Dir/Control/

# DMA call
/path/to/tools/NanoMethPhase/NanoMethPhase/nanomethphase.py  dma \
    --case $Case \
    --control $Control \
    --columns 1,2,5,7 \
    --out_prefix DH0808_Proband_vs_Controls_DMA \
    --out_dir $Working_Dir




Daryl Roche