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...@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 > > > >
