[slurm-users] ulimit in sbatch script

[Mahmood Naderan]

I actually have disabled the swap partition (!) since the system goes
really bad and based on my experience I have to enter the room and
reset the affected machine (!). Otherwise I have to wait for long
times to see it get back to normal.

When I ssh to the node with root user, the ulimit -a says unlimited
virtual memory. So, it seems that the root have unlimited value while
users have limited value.

Regards,
Mahmood




On Sun, Apr 15, 2018 at 10:26 PM, Ole Holm Nielsen
<Ole.H.Nielsen at fysik.dtu.dk> wrote:
> Hi Mahmood,
>
> It seems your compute node is configured with this limit:
>
> virtual memory          (kbytes, -v) 72089600
>
> So when the batch job tries to set a higher limit (ulimit -v 82089600) than
> permitted by the system (72089600), this must surely get rejected, as you
> have discovered!
>
> You may want to reconfigure your compute nodes' limits, for example by
> setting the virtual memory limit to "unlimited" in your configuration. If
> the nodes has a very small RAM memory + swap space size, you might encounter
> Out Of Memory errors...
>
> /Ole