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Subject: Re: [OMPI users] qsub and limits.conf
From: Adrian Knoth (adi_at_[hidden])
Date: 2008-05-17 11:45:50


On Sat, May 17, 2008 at 04:58:30PM +0200, Javier Lazaro wrote:

> I have install torque-2.3.0 and openmpi-1.2.3.

Open MPI-1.2.6 is available.

> I make tests and I have discovered that the jobs launched with the parameter
> '-hostfile' or '-machinefile' stops are to exceed the limits in the file
> /etc/security/limits.conf

You cannot blame Open MPI for that. It's either Torque's responsibility
or the system's task to enforce settings.

MPI isn't about memory limits, runtime limitations, number of processes
and so on. Not at all.

I suggest you go and ask the Torque mailinglist.

> cat ${PBS_NODEFILE}
>
> mpirun -hostfile ${PBS_NODEFILE} /home/javier/mpi_hola/a.out

   http://www.open-mpi.org/faq/?category=tm

You don't need to read the hostfile yourself, there is a Torque launch
module included in Open MPI.

-- 
Cluster and Metacomputing Working Group
Friedrich-Schiller-Universität Jena, Germany
private: http://adi.thur.de