Mar 27, 2019, at 7:30 PM, Chris Samuel wrote:
>
> On 27/3/19 1:00 pm, Anne M. Hammond wrote:
>
>> NodeName=fl[01-04] CPUs=24 RealMemory=4 Sockets=2 CoresPerSocket=6
>> ThreadsPerCore=2 State=UNKNOWN
>
> This will give you 12 tasks per node, each task with 2 thread
Thanks. A second user cannot allocate any tasks on the node
which is running 12 processes.
So it does look like it slurm is tieing processes to physical cores.
Further interesting is that top shows all 24 Cpus at ~95%:
%Cpu0 : 93.4 us, 0.7 sy, 0.0 ni, 6.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0
We are just getting started with slurm here. We have
slurm 18.08.6-2
/etc/slurm/slurm.conf:
NodeName=fl[01-04] CPUs=24 RealMemory=4 Sockets=2 CoresPerSocket=6
ThreadsPerCore=2 State=UNKNOWN
Cannot allocate ntasks-per-node:
[hammond@hydrogen VSim-9.0]$ srun -N 1 --ntasks-per-node=24 --p
