[torqueusers] mpiexec not running on requested # of processors

carlos vasco carles.vasco at gmail.com
Thu Oct 9 09:26:32 MDT 2008

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.


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
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