[slurm-users] ulimit in sbatch script

[Mahmood Naderan]

BTW, the memory size of the node is 64GB.
Regards,
Mahmood




On Sun, Apr 15, 2018 at 10:56 PM, Mahmood Naderan <mahmood.nt at gmail.com> wrote:
> 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