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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/21615

Title: Helsim: a particle-in-cell simulator for highly imbalanced particle distributions
Authors: Wuyts, Roel
Haber, Tom
Lapenta, Giovanni
Issue Date: 2015
Publisher: Elsevier Science B.V.
Citation: Procedia Computer Science, p. 2923-2927
Series/Report: Procedia Computer Science
Series/Report no.: 51
Abstract: Helsim is a 3D electro-magnetic particle-in-cell simulator used to simulate the behaviour of plasma in space. Particle-in-cell simulators track the movement of particles through space, with the particles generating and being subjected to various fields (electric, magnetic and or gravitational). Helsim dissociates the particles data structure from the fields, allowing them to be distributed and load-balanced independently and can simulate experiments with highly imbalanced particle distributions with ease. This paper shows weak scaling results of a highly imbalanced particle setup on up to 32 thousand cores. The results validate the basic claims for scalability for imbalanced particle distributions, but also highlights a problem with a workaround we had to implement to circumvent an OpenMPI bug we encountered.
Notes: [Wuyts, Roel; Haber, Tom] ExaSci Life Lab, Leuven, Belgium. [Wuyts, Roel] IMEC, Leuven, Belgium. [Wuyts, Roel; Lapenta, Giovanni] Katholieke Univ Leuven, Leuven, Belgium. [Haber, Tom] Univ Hasselt, Hasselt, Belgium.
URI: http://hdl.handle.net/1942/21615
DOI: 10.1016/j.procs.2015.05.479
ISI #: 000373939100317
ISSN: 1877-0509
Category: C1
Type: Proceedings Paper
Validation: ecoom, 2017
Appears in Collections: Research publications

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