[mpich-discuss] multi-core processores

[Nicolas Rosner]

Hello Ali,

You can use the -np (or just -n, same thing) option to tell mpiexec
the number of desired processes, e.g.

    mpiexec -np 4 your_program

By default, if you don't specify a list of nodes, the above syntax
will usually launch four copies of your_program on the local machine.

Further details:
  * mpiexec -help
  * http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager
  * http://www.mcs.anl.gov/research/projects/mpich2/documentation/index.php?s=docs

Hope this helps,
Nicolás




On Wed, Apr 27, 2011 at 10:19 AM, Mohamed Ali Abd El Aziz Essa
<moalab at upvnet.upv.es> wrote:
>
> Dear there
>
> We are here in the university of Valencia, Spain. have installed mpich2 with
> intel fortran compiler. we'd like to make use of multi-core intel. how it can
> be defined for the mpiexec that the processor have 4 cores and to make use of
> theme.
>
> with my regards,
>
> Ali.
>
> Instituto de Ingenieria Energetia
> Ciudad Plitecnica de Inovacion
> Universidad Politecnica de Valencia
> 8E edeficio, accesso F, 5ª planta
> Camino de Vera s/n
> 46022 Valencia
> España
> Tel.: +34 963 87 91 23 (ext 79123)
> Fax: +34 963 87 91 26
>
>
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