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Parallel bottleneck in the Quasineutrality solver embedded in GYSELA

Guillaume Latu 1, 2 Nicolas Crouseilles 3, 4 Virginie Grandgirard 1 
4 CALVI - Scientific computation and visualization
IRMA - Institut de Recherche Mathématique Avancée, LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : This report shows some performance results of the Quasineutraliy Poisson solver used in the GYSELA code. The numerical schemes of this Poisson solver is explained, and the computation and communication steps on a parallel machine are described. Benchmarks shows several time measurement from 32 cores to 4096 cores. Present bottlenecks and problems of the parallel algorithm are discussed. Some possible solutions are foreseen.
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Submitted on : Wednesday, April 6, 2011 - 12:16:37 PM
Last modification on : Friday, February 4, 2022 - 3:29:35 AM
Long-term archiving on: : Thursday, November 8, 2012 - 1:31:17 PM


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  • HAL Id : inria-00583689, version 1


Guillaume Latu, Nicolas Crouseilles, Virginie Grandgirard. Parallel bottleneck in the Quasineutrality solver embedded in GYSELA. [Research Report] RR-7595, INRIA. 2011, pp.11. ⟨inria-00583689⟩



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