Jeff Hammond at Argonne tells me that there’s some confusion in the user community about MPI and C++. Let me see if I can clear up some of the issues. In
A user on the Open MPI mailing list recently asked about using negative tags for point-to-point MPI sending/receiving operations. He was using bit-mapped tags, and needed just one more bit.
We’re here at the MPI Forum in Vienna where the Forum has just unanimously voted to accept the MPI-3.0 document. Woo hoo!! This document caps a 4-year effort that started
Most people’s reactions to hearing about the new MPI-3 non-blocking “barrier” collective think: huh? Why on earth would you have a non-blocking barrier? The whole point of a barrier is
In my last post, I described the Simple mode of Open MPI v1.7’s process affinity system. The Simple mode is actually quite flexible, and we anticipate that it will meet
In my last post, I mentioned that we just finished a complete revamp of the Open MPI process affinity system, and provided only a few details as to what we