On Jul 28, 2016, at 2:52 AM, Sreenidhi Bharathkar Ramesh via devel <devel@lists.open-mpi.org> wrote: > >> For Open MPI, it's basically THREAD_MULTIPLE and not-THREAD_MULTIPLE. I.e., >> there's no real difference between SINGLE, SERIALIZED, FUNNELED > > We were assuming that there would be cost due to > locking/synchronization in FUNNELED and SERIALIZED also.
The MPI spec says that *applications* must ensure the correctness for FUNNELED and SERIALIZED -- so Open MPI does not provide additional locking for these levels. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ _______________________________________________ devel mailing list devel@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/devel
