[slurm-users] Small FreeMem is reported by scontrol

[Mahmood Naderan]

OK. It takes some time for scontrol to update the values.
I can now see more free memory as below

   RealMemory=120705 AllocMem=1024 FreeMem=115290 Sockets=32 Boards=1

Thank you William.


Regards,
Mahmood




On Mon, Dec 16, 2019 at 7:55 PM Mahmood Naderan <mahmood.nt at gmail.com>
wrote:

> >Memory may be being used by jobs running, or tasks outside the control of
> >Slurm running, or possibly NFS buffer cache or similar.  You may need to
> >start an ssh session on the node and look.
>
>
> I checked that. For example, on compute-0-1, I see
>     RealMemory=120705 AllocMem=1024 FreeMem=8442 Sockets=32 Boards=1
>
> I then connected to the node and ran "top"
>
>     KiB Mem : 12360248+total,  8623376 free,  5197452 used,
> 10978166+buff/cache
>
> I then ran
>
>     sync; echo 3 > /proc/sys/vm/drop_caches
>
> While "top" shows the caches are deleted
>
>     KiB Mem : 12360248+total, 11805062+free,  5202876 used,   348992
> buff/cache
>
>
> Still scontrol shows the same as before
>
>    RealMemory=120705 AllocMem=1024 FreeMem=8426 Sockets=32 Boards=1
>
>
> Regards,
> Mahmood
>
>
>
>
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