[slurm-users] "Low socket*core*thre" - solution?

[Mahmood Naderan]

Hi,
I also have the same problem. I think by default, slurm won't add the
head node as a compute node. I manually set the state to resume,
However, the number of cores is still low (1) and not what I specified
in slurm.conf


[root at rocks7 mahmood]# scontrol show node rocks7
NodeName=rocks7 Arch=x86_64 CoresPerSocket=1
   CPUAlloc=0 CPUErr=0 CPUTot=1 CPULoad=0.14
   AvailableFeatures=(null)
   ActiveFeatures=(null)
   Gres=(null)
   NodeAddr=10.1.1.1 NodeHostName=rocks7 Version=17.11
   OS=Linux 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017
   RealMemory=64261 AllocMem=0 FreeMem=1247 Sockets=1 Boards=1
   State=IDLE+DRAIN ThreadsPerCore=1 TmpDisk=281775 Weight=1 Owner=N/A
MCS_label=N/A
   Partitions=WHEEL,EMERALD
   BootTime=2018-04-13T13:04:59 SlurmdStartTime=2018-04-13T13:05:17
   CfgTRES=cpu=1,mem=64261M,billing=1
   AllocTRES=
   CapWatts=n/a
   CurrentWatts=0 LowestJoules=0 ConsumedJoules=0
   ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
   Reason=Low socket*core*thread count, Low CPUs [root at 2018-05-05T21:18:05]

[root at rocks7 mahmood]# scontrol update node=rocks7 state=resume
[root at rocks7 mahmood]# scontrol show node rocks7
NodeName=rocks7 Arch=x86_64 CoresPerSocket=1
   CPUAlloc=0 CPUErr=0 CPUTot=1 CPULoad=0.14
   AvailableFeatures=(null)
   ActiveFeatures=(null)
   Gres=(null)
   NodeAddr=10.1.1.1 NodeHostName=rocks7 Version=17.11
   OS=Linux 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017
   RealMemory=64261 AllocMem=0 FreeMem=1247 Sockets=1 Boards=1
   State=IDLE ThreadsPerCore=1 TmpDisk=281775 Weight=1 Owner=N/A MCS_label=N/A
   Partitions=WHEEL,EMERALD
   BootTime=2018-04-13T13:04:59 SlurmdStartTime=2018-04-13T13:05:17
   CfgTRES=cpu=1,mem=64261M,billing=1
   AllocTRES=
   CapWatts=n/a
   CurrentWatts=0 LowestJoules=0 ConsumedJoules=0
   ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
[root at rocks7 mahmood]# grep -A 3 -B 3 rocks7 /etc/slurm/slurm.conf
DebugFlags=Priority,NO_CONF_HASH,backfill,BackfillMap

NodeName=DEFAULT State=UNKNOWN
NodeName=rocks7 NodeAddr=10.1.1.1 CPUs=20
PartitionName=DEFAULT AllocNodes=rocks7 State=UP
PartitionName=DEBUG

####### Power Save Begin ##################





Regards,
Mahmood




On Sat, May 5, 2018 at 5:06 PM, Chris Samuel <chris at csamuel.org> wrote:
> On Thursday, 3 May 2018 10:28:46 AM AEST Matt Hohmeister wrote:
>
>> …and it looks good, except for the drain on my server/compute node:
>
> I think if you've had the config wrong at some point in the past then slurmctld
> will remember the error and you'll need to manually clear it with:
>
> scontrol update node=${NODE} state=resume
>
> All the best,
> Chris
> --
>  Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC
>
>