sponsored byIEEEACMThe International Conference for High Performance 
Computing, Networking, Storage and Analysis
FacebookTwitterGoogle PlusLinkedInYouTubeFlickr

SCHEDULE: NOV 16-21, 2014

When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.

Enabling Efficient Multithreaded MPI Communication Through a Library-Based Implementation of MPI Endpoints



TIME: 11:00AM - 11:30AM

SESSION CHAIR: Ron Brightwell

AUTHOR(S):Srinivas Sridharan, James Dinan, Dhiraj Kalamkar



Modern high-speed interconnection networks are designed with capabilities to support communication from multiple processor cores. The MPI endpoints extension has been proposed to ease process and thread count tradeoffs by enabling multithreaded MPI applications to efficiently drive independent network communication. In this work, we present the first implementation of the MPI endpoints interface and demonstrate the first applications running on this new interface. We use a novel library-based design that can be layered on top of any existing, production MPI implementation. Our approach uses proxy processes to isolate threads in an MPI job, eliminating threading overheads within the MPI library and allowing threads to achieve process-like communication performance. Performance results for the Lattice QCD Dslash kernel indicates that endpoints provides up to 2.9x improvement in communication performance and 1.87x overall performance improvement over a highly optimized hybrid MPI+OpenMP baseline on 128 processors.

Chair/Author Details:

Ron Brightwell (Chair) - Sandia National Laboratories

Srinivas Sridharan - Intel Corporation

James Dinan - Intel Corporation

Dhiraj Kalamkar - Intel Corporation

Add to iCal  Click here to download .ics calendar file

Add to Outlook  Click here to download .vcs calendar file

Add to Google Calendarss  Click here to add event to your Google Calendar

Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society