SC12 Home > SC12 Schedule > SC12 Presentation - Evaluating Communication Performance in Supercomputers BlueGene/Q and Cray XE6

SCHEDULE: NOV 10-16, 2012

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Evaluating Communication Performance in Supercomputers BlueGene/Q and Cray XE6

SESSION: Research Poster Reception

EVENT TYPE: Posters and Electronic Posters

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Torsten Hoefler

AUTHOR(S):Huy Bui, Venkatram Vishwanath, Jason Leigh, Michael E. Papka

ROOM:East Entrance

ABSTRACT:
Evaluation of the communication performance in supercomputers Blue Gene/Q and Cray XE6 using MPI and lower level libraries are presented. MPI is widely used for to its simplicity, portability and straightforwardness, however it also introduces overhead that degrades communication performance. Some applications with performance constraints cannot tolerate that degradation. Recent supercomputers such as the Blue Gene/Q and CrayXE provide lower level communications libraries such as PAMI (Parallel Active Message Interface) and uGNI (User Generic Network Interface). Our experiments show that with different communications modes: one-sided, two-sided, inter-node, intra-node, we can achieve higher performance with certain message sizes. These results will enable us to develop a light-weight API for GLEAN which is a framework for I/O acceleration and in situ analysis, to get improved performance on these systems.

Chair/Author Details:

Torsten Hoefler (Chair) - ETH Zurich

Huy Bui - University of Illinois at Chicago

Venkatram Vishwanath - Argonne National Laboratory

Jason Leigh - University of Illinois at Chicago

Michael E. Papka - Argonne National Laboratory

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Evaluating Communication Performance in Supercomputers BlueGene/Q and Cray XE6

SESSION: Research Poster Reception

EVENT TYPE:

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Torsten Hoefler

AUTHOR(S):Huy Bui, Venkatram Vishwanath, Jason Leigh, Michael E. Papka

ROOM:East Entrance

ABSTRACT:
Evaluation of the communication performance in supercomputers Blue Gene/Q and Cray XE6 using MPI and lower level libraries are presented. MPI is widely used for to its simplicity, portability and straightforwardness, however it also introduces overhead that degrades communication performance. Some applications with performance constraints cannot tolerate that degradation. Recent supercomputers such as the Blue Gene/Q and CrayXE provide lower level communications libraries such as PAMI (Parallel Active Message Interface) and uGNI (User Generic Network Interface). Our experiments show that with different communications modes: one-sided, two-sided, inter-node, intra-node, we can achieve higher performance with certain message sizes. These results will enable us to develop a light-weight API for GLEAN which is a framework for I/O acceleration and in situ analysis, to get improved performance on these systems.

Chair/Author Details:

Torsten Hoefler (Chair) - ETH Zurich

Huy Bui - University of Illinois at Chicago

Venkatram Vishwanath - Argonne National Laboratory

Jason Leigh - University of Illinois at Chicago

Michael E. Papka - Argonne National Laboratory

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