Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/12101
Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Groen, D | - |
dc.contributor.author | Abou Chacra, D | - |
dc.contributor.author | Nash, RW | - |
dc.contributor.author | Jaros, J | - |
dc.contributor.author | Bernabeu, MO | - |
dc.contributor.author | Coveney, PV | - |
dc.contributor.editor | Markidis, S | - |
dc.contributor.editor | Laure, E | - |
dc.coverage.spatial | Stockholm, SWEDEN | - |
dc.coverage.spatial | Stockholm, SWEDEN | - |
dc.coverage.spatial | Stockholm, SWEDEN | - |
dc.date.accessioned | 2016-02-12T15:00:36Z | - |
dc.date.available | 2015-01-01 | - |
dc.date.available | 2016-02-12T15:00:36Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | International Conference on Exascale Applications and Software, EASC 2014, Stockholm, Sweden, (April 2-3, 2014), Lecture Notes in Computer Science, 8759, pp 28-38, (2015) | en_US |
dc.identifier.isbn | 978-3-319-15975-1 | - |
dc.identifier.issn | 0302-9743 | - |
dc.identifier.uri | http://link.springer.com/chapter/10.1007%2F978-3-319-15976-8_2 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/12101 | - |
dc.description.abstract | Obtaining a good load balance is a significant challenge in scaling up lattice-Boltzmann simulations of realistic sparse problems to the exascale. Here we analyze the effect of weighted decomposition on the performance of the HemeLB lattice-Boltzmann simulation environment, when applied to sparse domains. Prior to domain decomposition, we assign wall and in/outlet sites with increased weights which reflect their increased computational cost. We combine our weighted decomposition with a second optimization, which is to sort the lattice sites according to a space filling curve. We tested these strategies on a sparse bifurcation and very sparse aneurysm geometry, and find that using weights reduces calculation load imbalance by up to 85 %, although the overall communication overhead is higher than some of our runs. | en_US |
dc.description.sponsorship | This work has received funding from the CRESTA and MAPPER projects within the EC-FP7 (ICT-2011.9.13) under Grant Agreements nos. 287703 and 261507, and from EPSRC Grants EP/I017909/1 (www.2020science.net) and EP/I034602/1. | en_US |
dc.format.extent | 28 - 38 (11) | - |
dc.language.iso | en | en_US |
dc.publisher | Springer International Publishing | en_US |
dc.source | 2nd International Conference on Exascale Applications and Software (EASC) | - |
dc.source | 2nd International Conference on Exascale Applications and Software (EASC) | - |
dc.source | 2nd International Conference on Exascale Applications and Software (EASC) | - |
dc.subject | High performance computing | en_US |
dc.subject | Lattice-Boltzmann | en_US |
dc.subject | Domain decomposition | en_US |
dc.title | Weighted decomposition in high-performance lattice-Boltzmann simulations: Are some lattice sites more equal than others? | en_US |
dc.type | Conference Paper | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/978-3-319-15976-8_2 | - |
dc.relation.isPartOf | SOLVING SOFTWARE CHALLENGES FOR EXASCALE | - |
pubs.finish-date | 2014-04-03 | - |
pubs.finish-date | 2014-04-03 | - |
pubs.finish-date | 2014-04-03 | - |
pubs.publication-status | Published | - |
pubs.publication-status | Published | - |
pubs.publication-status | Published | - |
pubs.start-date | 2014-04-02 | - |
pubs.start-date | 2014-04-02 | - |
pubs.start-date | 2014-04-02 | - |
pubs.volume | 8759 | - |
Appears in Collections: | Dept of Computer Science Research Papers |
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