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

Mahmood Naderan mahmood.nt at gmail.com
Sun May 6 03:28:55 MDT 2018

Although this thread belongs to someone else, but a solution may apply
for others too.

[root at rocks7 ~]# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                32
On-line CPU(s) list:   0-31
Thread(s) per core:    2
Core(s) per socket:    8
Socket(s):             2
NUMA node(s):          4
Vendor ID:             AuthenticAMD
CPU family:            21
Model:                 2
Model name:            AMD Opteron(tm) Processor 6380
Stepping:              0
CPU MHz:               1400.000
CPU max MHz:           2500.0000
CPU min MHz:           1400.0000
BogoMIPS:              4999.86
Virtualization:        AMD-V
L1d cache:             16K
L1i cache:             64K
L2 cache:              2048K
L3 cache:              6144K
NUMA node0 CPU(s):     0-7
NUMA node1 CPU(s):     8-15
NUMA node2 CPU(s):     16-23
NUMA node3 CPU(s):     24-31
Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep
mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx
mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl
nonstop_tsc extd_apicid amd_dcm aperfmperf pni pclmulqdq monitor ssse3
fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy
svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core
perfctr_nb cpb hw_pstate bmi1 arat npt lbrv svm_lock nrip_save
tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
[root at rocks7 ~]# slurmd -C
NodeName=rocks7 slurmd: Considering each NUMA node as a socket
CPUs=32 Boards=1 SocketsPerBoard=4 CoresPerSocket=8 ThreadsPerCore=1
[root at rocks7 ~]# lstopo
bash: lstopo: command not found...
[root at rocks7 ~]# scontrol show node rocks7
NodeName=rocks7 Arch=x86_64 CoresPerSocket=1
   CPUAlloc=0 CPUErr=0 CPUTot=1 CPULoad=0.03
   NodeAddr= 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=11102 Sockets=1 Boards=1
   State=IDLE+DRAIN ThreadsPerCore=1 TmpDisk=281775 Weight=1 Owner=N/A
   BootTime=2018-04-13T13:05:00 SlurmdStartTime=2018-04-13T13:05:17
   CurrentWatts=0 LowestJoules=0 ConsumedJoules=0
   ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
   Reason=Low socket*core*thread count, Low CPUs [root at 2018-05-05T21:49:45]

I also have noticed that State returned back to IDLE+DRAIN
I am guessing to set Sockets to 32!!


On Sun, May 6, 2018 at 9:35 AM, Werner Saar <wernsaar at googlemail.com> wrote:
> Hi,
> what is the output of the command:
> slurmd -C rocks7
> Best regards
> Werner

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