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Multi-domain grid refinement for lattice-Boltzmann simulations on heterogeneous platforms
KTH, School of Computer Science and Communication (CSC), Computational Science and Technology (CST). Basque Center for Applied Mathematics (BCAM).
2015 (English)In: Proceedings - IEEE 18th International Conference on Computational Science and Engineering, CSE 2015, IEEE Computer Society, 2015, 1-8 p.Conference paper (Refereed)Text
Abstract [en]

The main contribution of the present work consists of several parallel approaches for grid refinement based on a multi-domain decomposition for lattice-Boltzmann simulations. The proposed method for discretizing the fluid incorporates different regular Cartesian grids with no homogeneous spatial domains, which are in need to be communicated each other. Three different parallel approaches are proposed, homogeneous Multicore, homogeneous GPU, and heterogeneous Multicore-GPU. Although, the homogeneous implementations exhibit satisfactory results, the heterogeneous approach achieves up to 30% extra efficiency, in terms of Millions of Fluid Lattice Updates per Second (MFLUPS), by overlapping some of the steps on both architectures, Multicore and GPU. © 2015 IEEE.

Place, publisher, year, edition, pages
IEEE Computer Society, 2015. 1-8 p.
Keyword [en]
Heterogeneous (Multicore-GPU) Platforms, Lattice-Boltzmann Method, Multi-Domain Grid Refinement, Parallel Computing, Domain decomposition methods, Parallel processing systems, Cartesian grid, Grid refinement, Heterogeneous multicore, Heterogeneous platforms, Lattice Boltzmann method, Lattice Boltzmann simulations, Multi core, Spatial domains, Computational fluid dynamics
National Category
Embedded Systems
URN: urn:nbn:se:kth:diva-188340DOI: 10.1109/CSE.2015.9ISI: 000380496700001ScopusID: 2-s2.0-84962920078ISBN: 9781467382977OAI: diva2:936128
18th IEEE International Conference on Computational Science and Engineering, CSE 2015, 21 October 2015 through 23 October 2015

QC 20160613

Available from: 2016-06-13 Created: 2016-06-09 Last updated: 2016-09-05Bibliographically approved

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