On May 2, 2012, at 6:22 AM, Brice Goglin wrote: >> - Fix some process affinity issues. When binding a process, Open MPI >> will now bind to all available hyperthreads in a core (or socket, >> depending on the binding options specified). > > Is this really what you mean? Isn't hyperthreading ignored by default?
If hyperthreading is enabled on the machine and you "mpirun --bind-to-core", we now bind each process to all hyperthreads in the core. Previously, we only bound to the first hyperthread in the core. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
