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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:1.0
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DTSTART:20111116T011500Z
DTEND:20111116T030000Z
LOCATION:WSCC North Galleria 2nd/3rd Floors
DESCRIPTION;ENCODING=QUOTED-PRINTABLE: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.
SUMMARY:Performance Modeling and Computational Quality of Service (CQoS) in Synergia2 Accelerator Simulations
PRIORITY:3
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