On Wed, Jul 03, 2013 at 10:39:55AM -0500, Tatiana V. Martsinkevich wrote:

Hello,

I have a couple of questions:

1) is there a way to find out what other processes reside in the same node as my_rank from within MPICH?

MPI_GET_PROCESSOR_NAME might be what you are looking for. ==rob -- Rob Latham Mathematics and Computer Science Division Argonne National Lab, IL USA