Hi  Envoyé ,

Thanks for the reply but I want to estimate the time of executing MPI_Bcast function by mathmatics. I found that we can achieve this by using LogGP model with this equation:

T = ceil(log2p) . (L + 2 · o + (n − 1) · G

but that does not give good accuracy for time evaluation.



--- On Wed, 4/4/12, Aurélien Bouteiller <bouteill@eecs.utk.edu> wrote:

From: Aurélien Bouteiller <bouteill@eecs.utk.edu>
Subject: Re: [OMPI users] Need Performance estimation of MPI_Bcast
To: "Open MPI Users" <users@open-mpi.org>
Cc: "users@open-mpi.org" <users@open-mpi.org>
Date: Wednesday, April 4, 2012, 3:50 PM

You can use the intel mpi benchmark, or skampi. These two programs are designed to evaluate Moi performance.

Envoyé de mon iPad

Le 2012-04-04 à 08:46, anas trad <tradat84@yahoo.com> a écrit :

Hi all,

I need to know the time estimation of executing MPI_Bcast function on Neolith Cluster. Please, can anyone show me how to achieve that.

Thanks,
Anas

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