Newsgroups: comp.parallel.pvm From: David Espadas Valladares Subject: MPI vs PVM on CRAY T3E Organization: Universidad Complutense de Madrid Date: Tue, 27 Jan 1998 19:56:15 +0100 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <34CE2DCF.A20524F9@ultra1.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 Espadas Valladares Dpto. de Arquitectura de Computadores y Automatica Facultad de CC. Fisicas Universidad Complutense de Madrid Ciudad Universitaria S/N Phone: +34 1 394 43 64 28040 Madrid - SPAIN E-mail: despadas@ultra1.dia.ucm.es ____________________________________________________________________________