You want to see what is output on the node itself when you run:
slurmd -C
Brian Andrus
On 4/5/2022 2:11 PM, Guertin, David S. wrote:
We've added a new GPU node to our cluster with 32 cores. It contains 2
16-core sockets, and hyperthreading is turned off, so the total is 32
cores. But jobs are only being allowed to use 16 cores.
Here's the relevant line from slurm.conf:
NodeName=node020 CoresPerSocket=16 RealMemory=257600 ThreadsPerCore=1
Boards=1 SocketsPerBoard=2 Weight=100 Gres=gpu:rtxa5000:4
And here's scontrol output for the node. Note that even though
CPUTot=32, CfgTRES=cpu=16 instead of 32:
# scontrol show node node020
NodeName=node020 Arch=x86_64 CoresPerSocket=16
CPUAlloc=16 CPUTot=32 CPULoad=7.29
AvailableFeatures=(null)
ActiveFeatures=(null)
Gres=gpu:rtxa5000:4
NodeAddr=node020 NodeHostName=node020 Version=19.05.8
OS=Linux 3.10.0-1160.59.1.el7.x86_64 #1 SMP Wed Feb 23 16:47:03 UTC
2022
RealMemory=257600 AllocMem=126976 FreeMem=1393 Sockets=2 Boards=1
State=MIXED ThreadsPerCore=1 TmpDisk=2038 Weight=100 Owner=N/A
MCS_label=N/A
Partitions=gpu-long,gpu-short,gpu-standard
BootTime=2022-04-05T11:37:08 SlurmdStartTime=2022-04-05T11:43:00
CfgTRES=cpu=16,mem=257600M,billing=16,gres/gpu=4
AllocTRES=cpu=16,mem=124G,gres/gpu=2
CapWatts=n/a
CurrentWatts=0 AveWatts=0
ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
Why isn't this node allocating all 32 cores?
Thanks,
David Guertin
