[Mauiusers] Questions regarding "tasks" and the cfg file.

Garrick Staples garrick at usc.edu
Wed Sep 17 15:43:40 MDT 2008


On Wed, Sep 17, 2008 at 03:21:43PM -0500, Michael Homa alleged:
> The only place I figure it may come from is the torque configuration
> for the dedicated queue:
> 
>         resources_max.ncpus = 6
> 
> But my understand from reading the queue configuration guide (and feel
> free to tell me I'm full of crap) is that resources_max.ncpus is the
> maximum number of processors a single job can request in the queue and not
> the default number of processors allocated per job if the user does not
> include "-l node" argument.

Yes, max becames the request in the absense of a request.  ncpus doesn't mix
with nodes.  Unset that from your configuration.

 
> > > The dedicated queue has three dual CPU, dual cores and was established in
> > > torque:
> > >
> > >   argo17-1 np=4 Linux2.i86pc dualcore amd smp dedicated
> > >   argo18-2 np=4 Linux2.i86pc dualcore amd smp dedicated
> > >   argo18-3 np=4 Linux2.i86pc dualcore amd smp dedicated
> 
> I've always wanted to ask this question. Does the np refer to "real,
> physical processors" or does it refer to the total number of cores?
> If the former, then argo17-1 should be:
>   argo17-1 np=2:ppn=2 Linux2.i86pc dualcore amd smp dedicated
> 
> If the latter, then:
>   argo17-1 np=4 Linux2.i86pc dualcore amd smp dedicated
> is correct

It is the number of cores.  

-- 
Garrick Staples, GNU/Linux HPCC SysAdmin
University of Southern California

Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html
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