[torqueusers] mpiexec not running on requested # of processors

Frank Mietke frank.mietke at informatik.tu-chemnitz.de
Fri Oct 10 05:04:51 MDT 2008


Hi Carlos,

On Thu, Oct 09, 2008 at 05:26:32PM +0200, carlos vasco wrote:
> We have been using OSC mpiexec with the --comm=pmi parameter for mpich2 codes:
> mpiexec --comm=pmi  yourcode
> 
> But now I am trying mvapich2 1.2 with a new Infiniband cluster and I
> have not get success with OSC mpiexec.

I think the problem is that they changed the startup mechanism in MVAPICH-1.2
(see changelog). It is necessary to adapt OSC mpiexec to handle this new
mechanism. I did this several times with MVAPICH1 and also MVAPICH2. I'll
looking at it in the next days.


Regards,
Frank


> 
> Regards,
> Carlos
> 
> On Thu, Oct 9, 2008 at 5:20 PM, Bogdan Costescu
> <Bogdan.Costescu at iwr.uni-heidelberg.de> wrote:
> > On Thu, 9 Oct 2008, Justin Finnerty wrote:
> >
> >> I think the problem is you are not really running your job under PBS. As
> >> far as I know the mpiexec program most people use with MPICH knows about
> >> torque but the MPICH2 mpiexec does not.
> >
> > OSC's mpiexec knows how to start MPICH2 jobs as well. You need to specify a
> > different mechanism through a command line parameter or you can have a
> > different OSC mpiexec binary with a different default mechanism.
> >
> > --
> > Bogdan Costescu
> >
> > IWR, University of Heidelberg, INF 368, D-69120 Heidelberg, Germany
> > Phone: +49 6221 54 8869/8240, Fax: +49 6221 54 8868/8850
> > E-mail: bogdan.costescu at iwr.uni-heidelberg.de
> > _______________________________________________
> > torqueusers mailing list
> > torqueusers at supercluster.org
> > http://www.supercluster.org/mailman/listinfo/torqueusers
> >
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-- 
Dipl.-Inf. Frank Mietke     |     Fakultätsrechen- und Informationszentrum
Tel.: 0371 - 531 - 35538    |     Fak. für Informatik
Fax:  0371 - 531 8 35538    |     TU-Chemnitz
Key-ID: 60F59599            |     frank.mietke at informatik.tu-chemnitz.de


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