SCHEDULE: NOV 12-18, 2011

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ENTIRE WEEK SATURDAY SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY

Performance Modeling and Computational Quality of Service (CQoS) in Synergia2 Accelerator Simulations

SESSION: Research Poster Reception

EVENT TYPE: ACM Student Research Competition Poster, Poster, Electronic Poster

TIME: 5:15PM - 7:00PM

SESSION CHAIR: Bernd Mohr

AUTHOR(S):Steve Goldhaber, Stefan Muszala, James F. Amundson, Eric G. Stern, Nanbor Wang, Boyana Norris, Daihee Kim

ROOM:WSCC North Galleria 2nd/3rd Floors

ABSTRACT:
High precision accelerator modeling is essential for particle accelerator design and optimization, however, this modeling presents a significant computational challenge. We present performance modeling and computational quality of service (CQoS) results from Synergia2, an advanced particle accelerator simulation code developed under the ComPASS SciDAC-2 accelerator modeling project. Understanding both strong and weak scaling behavior is crucial both to designing code optimizations and to adding new functionality. We ported Synergia2 both to linux clusters and to a BG/P system at Argonne. We then performed detailed profiling which led to a heuristic performance model for a benchmark simulation. The 3-D Hockney space charge solver was modeled in detail using a component-based approach as it represents the main scaling challenge. These processes helped identify performance bottlenecks and code optimizations. We applied CQoS methods to maintain optimal memory layout and used a component approach to maintain the required CQoS in the space charge solver.

Chair/Author Details:

Bernd Mohr (Chair) - Juelich Supercomputing Centre

Steve Goldhaber - Tech-X Corporation

Stefan Muszala - Tech-X GmbH

James F. Amundson - Fermi National Laboratory

Eric G. Stern - Fermi National Laboratory

Nanbor Wang - Tech-X Corporation

Boyana Norris - Argonne National Laboratory

Daihee Kim - State University of New York at Binghamton

Click here to download .ics calendar file