Thank you I rebuilt MPICH-2 with --with-device=ch3:shm and --with-pm=gforker I did see a slight improvement in speed. However, compared with the cluster runs, the shared-memory performance is still not as good at all. So I think the problem is indeed in the memory subsystem as Satith said.
Shi --- Lisandro Dalcin <dalcinl at gmail.com> wrote: > Please read the following... > > http://www-unix.mcs.anl.gov/mpi/mpich/downloads/mpich2-doc-README.txt > > I think for shared-memory you should try to > configure MPICH2 with the following: > > --with-device=ch3:shm > > If not, perhaps configure will default to > --with-device=ch3:sock and > MPICH2 will use TCP sockets. > > I hope this help you. > > Regards, > > -- > Lisandro Dalc?n > --------------- > Centro Internacional de M?todos Computacionales en > Ingenier?a (CIMEC) > Instituto de Desarrollo Tecnol?gico para la > Industria Qu?mica (INTEC) > Consejo Nacional de Investigaciones Cient?ficas y > T?cnicas (CONICET) > PTLC - G?emes 3450, (3000) Santa Fe, Argentina > Tel/Fax: +54-(0)342-451.1594 > > ____________________________________________________________________________________ Food fight? Enjoy some healthy debate in the Yahoo! Answers Food & Drink Q&A. http://answers.yahoo.com/dir/?link=list&sid=396545367
