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Performance evaluat...
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Axner, LilitKTH,Parallelldatorcentrum, PDC
(författare)
Performance evaluation of a Parallel Sparse Lattice Boltzmann Solver
- Artikel/kapitelEngelska2008
Förlag, utgivningsår, omfång ...
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Elsevier BV,2008
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-75239
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-75239URI
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https://doi.org/10.1016/j.jcp.2008.01.013DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20120214
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We develop a performance prediction model for a parallelized sparse lattice Boltzmann solver and present performance results for simulations of flow in a variety of complex geometries. A special focus is on partitioning and memory/load balancing strategy for geometries with a high solid fraction and/or complex topology such as porous media, fissured rocks and geometries from medical applications. The topology of the lattice nodes representing the fluid fraction of the computational domain is mapped on a graph. Graph decomposition is performed with both multilevel recursive-bisection and multilevel k-way schemes based on modified Kernighan–Lin and Fiduccia–Mattheyses partitioning algorithms. Performance results and optimization strategies are presented for a variety of platforms, showing a parallel efficiency of almost 80% for the largest problem size. A good agreement between the performance model and experimental results is demonstrated.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Bernsdorf, Joerg M.
(författare)
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Zeiser, Thomas
(författare)
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Lammers, Peter
(författare)
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Linxweiler, Jan
(författare)
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Hoekstra, Alfonsb G.
(författare)
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KTHParallelldatorcentrum, PDC
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Computational Physics: Elsevier BV227:10, s. 4895-49110021-99911090-2716
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