On Jul 7, 2011, at 5:59 PM, Qasim Ali wrote: > Hi Jeff, > > Thanks for following up. I have a question to clear things. > > 1. If I do not specify any affinity in mpirun, what memory allocation policy > is used by default?
None. > a. When it is not compiled with libnuma > b. when compiled with libnuma Memory affinity doesn't really make sense unless process affinity is used. I.e., why pin your memory if your process could move? > BTW What do you mean by "internal memory" in OMPI? Memory that Open MPI uses internally -- such as shared memory to communicate between processes on the same server. I.e., this is memory that Open MPI does not expose to the user; it's private, internal memory. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/