Hi, I am trying to figure out a way for each local MPI rank to identify the ranks located in physically remote nodes (just different nodes) of cluster or MPPs such as Cray. I am using MPI_Get_processor_name to get the node ID, but it requires some processing to map MPI rank to the node ID. Is there any better ways doing this using MPI-2.2 (or earlier) capabilities? It will be great if I can easily get a list of MPI ranks in the same physical node.
Thanks, ----------------------------------------------------------------------------- Keita Teranishi Principal Member of Technical Staff Scalable Modeling and Analysis Systems Sandia National Laboratories Livermore, CA 94551 +1 (925) 294-3738
