Mm at the momento no,

but i think it's a good idea to insert this feature in future OpenMPI release :)

We can have parameter set that works well with a precise numbers of procs, and not with a more large number ( or more small number) . The same for message size.

Thanks for the quick reply! :D



2010/7/15 Jeff Squyres <jsquyres@cisco.com>
We don't have any kind of logic language like that for the params files.

Got any suggestions / patches?


On Jul 15, 2010, at 8:37 AM, Gabriele Fatigati wrote:

> Dear OpenMPI users,
>
> is it possible to define some set of parameters for a range number of processors and message size in openmpi-mca-params.conf ? For example:
>
> if nprocs<256
>
> some mca parameters...
>
> if nprocs > 256
>
> other mca parameters..
>
> and the same related to message size?
>
> Thanks in advance.
>
> --
> Ing. Gabriele Fatigati
>
> Parallel programmer
>
> CINECA Systems & Tecnologies Department
>
> Supercomputing Group
>
> Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
>
> www.cineca.it                    Tel:   +39 051 6171722
>
> g.fatigati [AT] cineca.it
> _______________________________________________
> users mailing list
> users@open-mpi.org
> http://www.open-mpi.org/mailman/listinfo.cgi/users


--
Jeff Squyres
jsquyres@cisco.com
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/


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--
Ing. Gabriele Fatigati

Parallel programmer

CINECA Systems & Tecnologies Department

Supercomputing Group

Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy

www.cineca.it                    Tel:   +39 051 6171722

g.fatigati [AT] cineca.it