SLURM/ClusterStatus

Cluster Status

SLURM offers a variety of tools to check the general status of nodes/partitions in a cluster.

sinfo

The sinfo command will show you the status of partitions in the cluster. Passing the -N flag will show each node individually.

$ sinfo
PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST
gamma        up   infinite      3   idle gammagpu[01-03]
scavenger    up   infinite      2  drain tron[50-51]
scavenger    up   infinite     21    mix tron[00-01,03-15,46-49,52-53]
scavenger    up   infinite     31   idle tron[02,16-45]
tron*        up 3-00:00:00      2  drain tron[50-51]
tron*        up 3-00:00:00     21    mix tron[00-01,03-15,46-49,52-53]
tron*        up 3-00:00:00     31   idle tron[02,16-45]

$ sinfo -N
NODELIST    NODES PARTITION STATE
gammagpu01      1     gamma idle
gammagpu02      1     gamma idle
gammagpu03      1     gamma idle
tron00          1 scavenger mix
tron00          1     tron* mix
tron01          1 scavenger mix
tron01          1     tron* mix
tron02          1 scavenger idle
tron02          1     tron* idle
tron03          1 scavenger mix
tron03          1     tron* mix
tron04          1 scavenger mix
tron04          1     tron* mix
...
tron52          1 scavenger mix
tron52          1     tron* mix
tron53          1 scavenger mix
tron53          1     tron* mix

scontrol

The scontrol command can be used to view the status/configuration of the nodes in the cluster. If passed specific node name(s) only information about those node(s) will be displayed, otherwise all nodes will be listed. To specify multiple nodes, separate each node name by a comma (no spaces).

$ scontrol show nodes tron05,tron13
NodeName=tron05 Arch=x86_64 CoresPerSocket=16
   CPUAlloc=28 CPUTot=32 CPULoad=47.32
   AvailableFeatures=rhel8,AMD,EPYC-7302
   ActiveFeatures=rhel8,AMD,EPYC-7302
   Gres=gpu:rtxa6000:8
   NodeAddr=tron05 NodeHostName=tron05 Version=21.08.5
   OS=Linux 4.18.0-348.20.1.el8_5.x86_64 #1 SMP Tue Mar 8 12:56:54 EST 2022
   RealMemory=257538 AllocMem=157696 FreeMem=197620 Sockets=2 Boards=1
   State=MIXED ThreadsPerCore=1 TmpDisk=0 Weight=100 Owner=N/A MCS_label=N/A
   Partitions=scavenger,tron
   BootTime=2022-04-21T17:40:51 SlurmdStartTime=2022-04-21T18:00:56
   LastBusyTime=2022-04-22T11:21:16
   CfgTRES=cpu=32,mem=257538M,billing=346,gres/gpu=8,gres/gpu:rtxa6000=8
   AllocTRES=cpu=28,mem=154G,gres/gpu=7,gres/gpu:rtxa6000=7
   CapWatts=n/a
   CurrentWatts=0 AveWatts=0
   ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s

NodeName=tron13 Arch=x86_64 CoresPerSocket=16
   CPUAlloc=1 CPUTot=16 CPULoad=8.41
   AvailableFeatures=rhel8,AMD,EPYC-7302P
   ActiveFeatures=rhel8,AMD,EPYC-7302P
   Gres=gpu:rtxa4000:4
   NodeAddr=tron13 NodeHostName=tron13 Version=21.08.5
   OS=Linux 4.18.0-348.20.1.el8_5.x86_64 #1 SMP Tue Mar 8 12:56:54 EST 2022
   RealMemory=128525 AllocMem=65536 FreeMem=33463 Sockets=1 Boards=1
   State=MIXED ThreadsPerCore=1 TmpDisk=0 Weight=10 Owner=N/A MCS_label=N/A
   Partitions=scavenger,tron
   BootTime=2022-04-21T17:40:46 SlurmdStartTime=2022-04-21T17:54:51
   LastBusyTime=2022-04-22T13:04:57
   CfgTRES=cpu=16,mem=128525M,billing=173,gres/gpu=4,gres/gpu:rtxa4000=4
   AllocTRES=cpu=1,mem=64G,gres/gpu=4,gres/gpu:rtxa4000=4
   CapWatts=n/a
   CurrentWatts=0 AveWatts=0
   ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s

sacctmgr

The sacctmgr command shows cluster accounting information. One of the helpful commands is to list the available QoSes.

$ sacctmgr list qos format=Name,Priority,MaxWall,MaxJobsPU
      Name   Priority     MaxWall MaxJobsPU
---------- ---------- ----------- ---------
    normal          0
     dpart          0  2-00:00:00         8
       gpu          0    08:00:00         2