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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: We present an error-controlled, highly scalable FMM implementation for=0Along-range interactions of particle systems with open, 1D, 2D and 3D periodic boundary=0Aconditions. We highlight three aspects of fast summation codes not fully addressed in most =0Aarticles; namely memory consumption, error control and runtime minimization. The aim of this poster is to contribute to all of these three points in the context of modern large scale parallel machines. Especially the used data structures, the parallelization approach and the precision-dependent parameter optimization will be discussed.=0A=0AThe current code is able to compute all mutual long-range interactions of more than three=0Atrillion particles on 294912 BG/P cores within a few minutes for an expansion up to quadrupoles. The maximum memory footprint of such a computation has been reduced to less than 45 Bytes per particle. The code employs a one-sided, non-blocking parallelization approach with a small communication overhead.
SUMMARY:Passing The Three Trillion Particle Limit With An Error-Controlled Fast Multipole Method
PRIORITY:3
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