Newsgroups: comp.parallel.mpi
From: David Espadas Valladares <despadas@alpha1.dia.ucm.es>
Subject: MPI vs PVM on CRAY T3E
Organization: Universidad Complutense de Madrid
Date: Tue, 27 Jan 1998 17:29:38 +0000
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Message-ID: <34CE1982.41C67EA6@alpha1.dia.ucm.es>

Hi all:

I have ported some PVM code to MPI, and testing it on a CRAY T3E with 32
processors (although I never used more than 16 in parallel), but I'm
obtaing terrible performance (20 times worse on MPI than on PVM). Some
idea?. Maybe MPI implementation on T3E is not much optimised. Any help
would be welcomed.

Thanks in advance.

David.