[slurm-users] Not able to allocate all 24 ntasks-per-node; slurm.conf appears correct

[Anne M. Hammond]

Thanks Jeffrey and Chris.  

This does not work:

srun -N 1 -n 24 --pty bash -i

But this works:

srun -N 1 -n 24 --ntasks-per-core=2 --pty bash -i

So one has to be explicit about ntasks-per-core on the command line or in the sbatch file, even though ThreadsPerCore is in slurm.conf.



> On Mar 27, 2019, at 7:30 PM, Chris Samuel <chris at csamuel.org> wrote:
> 
> On 27/3/19 1:00 pm, Anne M. Hammond wrote:
> 
>> NodeName=fl[01-04] CPUs=24 RealMemory=40000 Sockets=2 CoresPerSocket=6 ThreadsPerCore=2 State=UNKNOWN
> 
> This will give you 12 tasks per node, each task with 2 thread units.
> 
> -- 
> Chris Samuel  :  http://www.csamuel.org/  :  Berkeley, CA, USA
>