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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2004-01-20 08:39:44


On Tue, 20 Jan 2004, Irshad Ahmed wrote:

> XMPI is available which has some graphical capabilities to show MPI
> messages. You might also want to investigate the MPI profiling layer if
> you want some more detailed statistics.
>
> >>>>> what is MPI profiling layer???????????
>
> >>>>> and how can i get more information about it, i think it will be a
> >>>>> interesting.

Short version: you can intercept MPI function calls by replacing functions
such as MPI_Send. When you write your own MPI_Send, you can invoke the
"real" MPI_Send through the name PMPI_Send.

Longer version: see the MPI-1 standard, or a good book on MPI for more
details.

-- 
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/