October 2025 OLCF User Conference Call: New Features in HPE Cray MPI for Frontier

The OLCF hosts monthly User Conference Calls. These calls are your opportunity to speak with center personnel to get the latest updates, express any concerns you may have, etc. No registration is required for this event. An email with an invite to the event will be sent to OLCF users approximately one week beforehand.

Monthly Topic:  New Features in HPE Cray MPI for Frontier

Speaker: Tim Mattox (HPE)

Abstract:

The Message Passing Interface (MPI) is an industry standard way for the parts of a parallel program to communicate. Since its inception in the 1990s, the MPI standard has evolved through several major revisions. Recently the cray-mpich/9.0.x module(s) have been made available on the Frontier system, which add support for the MPI-4.0 standard. This presentation will discuss the important new features in HPE Cray MPI that users and developers on Frontier might want to use. For example, there are now routines for persistent collectives, and large-count versions of routines that allow specifying more than two billion items in a single call.

Looking for a previous User Call recording? Check out our Training Archive and Vimeo Channel.