On Thu, May 13, 2010 at 2:45 PM, <[email protected]> wrote:
>
> Hi folk,
>
> it is asked sometimes but there is no solutions.
>
> I want to split CPUs on each nodes between different queues.
> I need a queue which has only one CPU on each node.
well, first and foremost, i would like to point out that trying to
configure this kind of node access pattern will probably
generate more headaches through inconsistent performance
than benefits. when managing a machine, one has to decide
whether the additional utilization is worth the time and grief and
slowing down the "special" jobs. we are avoiding this issue
completely, but always requiring to use complete nodes.
that all being said, it appears to me, that it would be far too
complex and too complicated to make the queue resource
manager realize what it has to do. but that you could very
easily split your node into two, but using a virtualization
software like xen, or kvm and the n configure the two parts
are individual resources on different ip numbers with 1
and 7 processing units available.
cheers,
axel.
> Other CPUs shared between other queues.
>
> For example there are 3 queues: ONE, TWO & THREE
> Each node has 8 CPUs.
>
> The queue ONE should use only 1 CPU on each node
> The queues TWO & THREE can use other CPUs on each node (in my case 7 CPUs)
> and always keep 1CPUs free.
>
> I did not find any solutions with my experiments with maui scheduler.
> I use torque 2.1.8 & 2.3.6, maui 3.26p21
>
> One of the solutions in case of only 2 queues is to use NODECFG option like
> this:
> NODECFG[DEFAULT] MAXPROC[CLASS:ONE]=1 MAXPORC[CLASS:TWO]=7
> MAXNODE[CLASS:ONE]=1 MAXJOB[CLASS:ONE]=1
>
> But it works only if I submit at first jobs to ONE queues. If I submit at
> first jobs to TWO queue these jobs start to occupy all 8 CPUs per node.
> Or if I submit to TWO queue one job with for example 4 CPUs per nodes and
> then I submit job to ONE queue it start to occupy all CPUs on one node then
> other CPUs on other nodes
>
> In torque config I also tried to change node_pack to False & True. It did not
> help.
>
> Thanx.
>
> _______________________________________________
> mauiusers mailing list
> [email protected]
> http://www.supercluster.org/mailman/listinfo/mauiusers
>
--
Dr. Axel Kohlmeyer [email protected]
http://sites.google.com/site/akohlmey/
Institute for Computational Molecular Science
Temple University, Philadelphia PA, USA.
_______________________________________________
mauiusers mailing list
[email protected]
http://www.supercluster.org/mailman/listinfo/mauiusers
