This web mail archive is frozen.
This page is part of a frozen web archive of this mailing list.
You can still navigate around this archive, but know that no new mails
have been added to it since July of 2016.
Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.
On Tue, Nov 07, 2006 at 05:02:54PM +0000, Miguel Figueiredo Mascarenhas Sousa Filipe wrote:
> if your aplication is on one given node, sharing data is better than
> copying data.
Unless sharing data repeatedly leads you to false sharing and a loss
> the MPI model assumes you don't have a "shared memory" system..
> therefore it is "message passing" oriented, and not designed to
> perform optimally on shared memory systems (like SMPs, or numa-CCs).
For many programs with both MPI and shared memory implementations, the
MPI version runs faster on SMPs and numa-CCs. Why? See the previous