Are you doing this just for debugging? Or you really want to do it within the MPI program?
orte-ps Gives you the pid/host for each rank, but I don't think there is any standard way to do this via API. Brock Palen www.umich.edu/~brockp CAEN Advanced Computing XSEDE Campus Champion bro...@umich.edu (734)936-1985 > On Nov 25, 2014, at 5:38 PM, Ralph Castain <r...@open-mpi.org> wrote: > > Every process has a complete map of where every process in the job is located > - not sure if there is an MPI API for accessing it, though. > > >> On Nov 25, 2014, at 2:32 PM, Teranishi, Keita <knte...@sandia.gov> wrote: >> >> 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 >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >> Link to this post: >> http://www.open-mpi.org/community/lists/users/2014/11/25868.php > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2014/11/25869.php
