: Jeff Squyres
To: Open MPI Users
Sent: Tuesday, June 2, 2009 10:15:39 AM
Subject: Re: [OMPI users] How to use Multiple links
withOpenMPI??
Note that striping doesn't really help you much until data sizes get large.
For example, networks tend to have an elbow in the graph wher
Note that striping doesn't really help you much until data sizes get
large. For example, networks tend to have an elbow in the graph where
the size of the message starts to matter (clearly evident on your
graphs).
Additionally, you have your network marked as with "hubs" not
"switches" -
On May 29, 2009, at 12:31 AM, shan axida wrote:
Is it true to use bidirectianal communication with MPI in ethernet
Cluster?
Are you asking if Open MPI uses bi-direction TCP sockets? Yes, it
does: we open one TCP socket between the MPI sender and receiver, and
if the order is reversed (re
