[GE users] Memory reservation

Michael Green mishagreen at gmail.com
Thu Dec 15 11:59:37 GMT 2005

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On 12/14/05, Andreas Haas <Andreas.Haas at sun.com> wrote:

> Since jobs memory consumption is monitored by Grid Engine based on 'h_vmem'
> request I recommend to configure it as a consumable and use
>    complex_values h_vmem=2G
> on a per host basis.

bioinfo4:~ # qconf -sc | grep h_vmem
h_vmem              h_vmem     MEMORY      <=    YES         YES      
 0        0

bioinfo4:~ # qconf -se b1
hostname              b1.biocl.weizmann.ac.il
load_scaling          NONE
complex_values        h_vmem=2G

same for all other exec hosts.

and now :
global                  -               -     -       -       -       -       -
b1                      lx24-x86        4  1.00    2.0G    1.8G    3.9G  949.3M
b2                      lx24-x86        4  1.01    2.0G    1.8G    3.9G    1.5G
b3                      lx24-x86        4  1.00    2.0G    1.9G    3.9G    1.0G
b4                      lx24-x86        4  1.02    2.0G    1.9G    3.9G  965.8M

that shows that all the hosts have 1.8G used leaving 200M free.
But now if I do
bioinfo4:~ # qselect -l h_vmem=500M
all.q at b1.biocl.weizmann.ac.il
all.q at b2.biocl.weizmann.ac.il
all.q at b3.biocl.weizmann.ac.il
all.q at b4.biocl.weizmann.ac.il

> If 'h_vmem' is a host consumable Grid Engine does resource bookkeeping for
> each job.

How can I monitor the consumption of h_vmem? Whenever I check h_vmem
it's always 2G:
bioinfo4:~ # qstat -F | grep -e all.q -e h_vmem
all.q at b1.biocl.weizmann.ac.il  BIP   1/4       1.02     lx24-x86

> More information about RR is available under
>    http://gridengine.sunsource.net/nonav/source/browse/~checkout~/gridengine/doc/devel/rfe/resource_reservation.txt?content-type=text/plain

thanks, I've read all of it yesterday night, I cannot say that I
understood all of it, but I got some better understanding of RR, AR
and Backfilling.

Warm regards,
Michael Green

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