期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 445, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2021.110631
关键词
Plasma; Turbulence; Conservation; Anti-symmetry
资金
- U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, Theory Program [DE-FG02-95ER54309]
- U.S. Department of Energy Office of Science [DE-AC05-00OR22725]
- DOE Office of Science [DE-AC02-06CH11357]
ALMA is a toolkit designed to solve hyperbolic conservation law systems in hybrid supercomputers, using the anti-symmetric formulation of fluids to obtain simple, robust, and easily parallelizable code. Practical GPU acceleration is realized on entire applications with an overall gain factor of 2 to 4, and ALMA also provides a parallel, GPU accelerated sparse solver based on geometric multigrid.
ALMA (Anti-symmetric, Large-Moment, Accelerated) is a fast, flexible, and scalable toolkit designed to solve hyperbolic conservation law systems in hybrid supercomputers. This manuscript describes the theoretical background and implementation of ALMA, which uses the anti-symmetric formulation of fluids to obtain simple, robust, and easily paralellizable code. Practical GPU acceleration is realized on entire applications with an overall gain factor of 2 to 4. ALMA also provides a parallel, GPU accelerated sparse solver based on geometric multigrid, capable of diagonalizing linear systems with 239 unknowns. We demonstrate ALMA's scaling and performance in petascale supercomputers and use standard fluid models to verify the overall approach with canonical benchmark problems. (C) 2021 Elsevier Inc. All rights reserved.
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