Re: [OMPI users] SHARED Memory----------------

[Eugene Loh]

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 http://www.open-mpi.org/faq/?category=sm -- e.g., http://www.open-mpi.org/faq/?category=sm#sm-btl . 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 implementation?