From: Eugene Loh <Eugene.Loh@sun.com>
To: Open MPI Users <firstname.lastname@example.org>
Sent: Thursday, April 23, 2009 1:20:05 PM
Subject: Re: [OMPI users] SHARED Memory----------------
Just to clarify (since "send to self" strikes me as confusing)...
If you're talking about using shared memory for point-to-point MPI
message passing, OMPI typically uses it automatically between two
processes on the same node. It is *not* used for a process sending to
itself. There is a well-written FAQ (in my arrogant opinion!) at
If you're talking about some other use of shared memory, let us know
what you had in mind.
Elvedin Trnjanin wrote:
Shared memory is used for send-to-self scenarios such as if you're
making use of multiple slots on the same machine.
shan axida wrote:
Any body know how to make use of shared memory in OpenMPI