On Sep 16, 2015, at 8:22 AM, marcin.krotkiewski <marcin.krotkiew...@gmail.com> wrote: > > Thanks a lot, that looks right! Looks like some reading to do.. > > Do you know if in the OpenMPI implementation the MPI_T-interfaced MCA > settings are thread-local, or rank-local?
By "rank local", I assume you mean "process local" (remember: every MPI process has at least 2 ranks -- one in MPI_COMM_WORLD, and one in MPI_COMM_SELF). All MPI_T interfaces in MPI are local to the MPI process. How each MPI implementation defines an "MPI process" is up to them; Open MPI defines an "MPI process" as an "OS process". -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/