Landau Collision Integral Solver with Adaptive Mesh Refinement on Emerging Architectures

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dc.citation.firstpageC452en_US
dc.citation.issueNumber6en_US
dc.citation.journalTitleSIAM Journal on Scientific Computingen_US
dc.citation.lastpageC465en_US
dc.citation.volumeNumber39en_US
dc.contributor.authorAdams, Mark F.en_US
dc.contributor.authorHirvijoki, Eeroen_US
dc.contributor.authorKnepley, Matthew G.en_US
dc.contributor.authorBrown, Jeden_US
dc.contributor.authorIsaac, Tobinen_US
dc.contributor.authorMills, Richarden_US
dc.date.accessioned2018-07-02T18:19:43Zen_US
dc.date.available2018-07-02T18:19:43Zen_US
dc.date.issued2017en_US
dc.description.abstractThe Landau collision integral is an accurate model for the small-angle dominated Coulomb collisions in fusion plasmas. We investigate a high order accurate, fully conservative, finite element discretization of the nonlinear multispecies Landau integral with adaptive mesh refinement using the PETSc library (ŭlwww.mcs.anl.gov/petsc). We develop algorithms and techniques to efficiently utilize emerging architectures with an approach that minimizes memory usage and movement and is suitable for vector processing. The Landau collision integral is vectorized with Intel AVX-512 intrinsics and the solver sustains as much as 22% of the theoretical peak flop rate of the Second Generation Intel Xeon Phi (``Knights Landing'') processor.en_US
dc.identifier.citationAdams, Mark F., Hirvijoki, Eero, Knepley, Matthew G., et al.. "Landau Collision Integral Solver with Adaptive Mesh Refinement on Emerging Architectures." <i>SIAM Journal on Scientific Computing,</i> 39, no. 6 (2017) Society for Industrial and Applied Mathematics: C452-C465. https://doi.org/10.1137/17M1118828.en_US
dc.identifier.doihttps://doi.org/10.1137/17M1118828en_US
dc.identifier.urihttps://hdl.handle.net/1911/102332en_US
dc.language.isoengen_US
dc.publisherSociety for Industrial and Applied Mathematicsen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleLandau Collision Integral Solver with Adaptive Mesh Refinement on Emerging Architecturesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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