[torqueusers] Fwd: ncpus anyone?

Garrick garrick at usc.edu
Sat Mar 13 21:24:05 MST 2010


I recently learned that irqbalance is another program that learns core  
architecture. Maybe some code we can lift.

HPCC/Linux Systems Admin

On Mar 12, 2010, at 11:22 PM, Chris Samuel <chris at csamuel.org> wrote:

> On Wed, 3 Mar 2010 06:12:14 am David Beer wrote:
>
>> Another enhancement that we're considering is locking memory close  
>> to the
>> CPUs (where relevant). I know that on some systems (NUMA, for  
>> example)
>> this is necessary in order to run jobs efficiently.
>
> Very much agree - can I suggest that you look at the hwloc library  
> being
> developed by the Open-MPI developers to provide a way of learning the
> architecture of systems as part of this ?
>
> Also you may well want to look at supporting control groups  
> (cgroups) in
> addition to cpusets as that provides some really handy extra  
> features like
> being able to limit the memory usage of a cgroup, good resource usage
> measurement, etc.
>
> cheers,
> Chris
> -- 
> Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC
>
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