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Analysing and modelling the performance of the HemeLB lattice-Boltzmann simulation environment

Groen, D; Hetherington, J; Carver, HB; Nash, RW; Bernabeu, MO; Coveney, PV; (2013) Analysing and modelling the performance of the HemeLB lattice-Boltzmann simulation environment. Journal of Computational Science , 4 (5) 412 -422. 10.1016/j.jocs.2013.03.002. Green open access

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Abstract

We investigate the performance of the HemeLB lattice-Boltzmann simulator for cerebrovascular blood flow, aimed at providing timely and clinically relevant assistance to neurosurgeons. HemeLB is optimised for sparse geometries, supports interactive use, and scales well to 32,768 cores for problems with ∼81 million lattice sites. We obtain a maximum performance of 29.5 billion site updates per second, with only an 11% slowdown for highly sparse problems (5% fluid fraction). We present steering and visualisation performance measurements and provide a model which allows users to predict the performance, thereby determining how to run simulations with maximum accuracy within time constraints.

Type: Article
Title: Analysing and modelling the performance of the HemeLB lattice-Boltzmann simulation environment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jocs.2013.03.002
Publisher version: http://dx.doi.org/10.1016/j.jocs.2013.03.002
Language: English
Additional information: © 2013 Elsevier B.V. All rights reserved. This work is licensed under a Creative Commons Attribution 3.0 Unported License.
Keywords: Lattice-Boltzmann, Parallel computing, High-performance computing, Performance modelling
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/1417904
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