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
Click here to download .ics calendar file