Torsten Hoefler has written a guest post at the Cisco blog on MPI 2.2’s Scalable Process Topologies. Hoefler, the Performance Modeling and Simulation lead of the Blue Waters project at NCSA, says that ...

Over at the MPI Blog, Cisco’s Jeff Squyres writes that if you’re not using processor and memory affinity in your MPI programs, you’re likely experiencing performance degradation without even realizing ...

Since the 1990s, MPI (Message Passing Interface) has been the dominant communications protocol for high-performance scientific and commercial distributed computing. Designed in an era when processors ...