Sparse Approximate Multifrontal Factorization with Butterfly Compression for High Frequency Wave Equations

Autor: Liu, Yang, Ghysels, Pieter, Claus, Lisa, Li, Xiaoye Sherry

Publikováno v: SIAM Journal on Scientific Computing. 2021(0):S367-91

We present a fast and approximate multifrontal solver for large-scale sparse linear systems arising from finite-difference, finite-volume or finite-element discretization of high-frequency wave equations. The proposed solver leverages the butterfly a

Externí odkaz: http://arxiv.org/abs/2007.00202

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ExaStencils: Advanced Multigrid Solver Generation

Autor: Lengauer, Christian, Apel, Sven, Grebhahn, Alexander, Groth, Stefan, Kronawitter, Stefan, Kuckuk, Sebastian, Rittich, Hannah, Schmitt, Christian, Schmitt, Jonas, Bolten, Matthias, Chiba, Shigeru, Rüde, Ulrich, Teich, Jürgen, Größlinger, Armin, Hannig, Frank, Köstler, Harald, Claus, Lisa

Publikováno v: Berlin : Springer, Lecture Notes in Computational Science and Engineering 136, 405-452 (2020).
Software for Exascale Computing-SPPEXA 2016-2019

Present-day stencil codes are implemented in general-purpose programming languages, such as Fortran, C, or Java, Python or derivates thereof, and harnesses for parallelism, such as OpenMP, OpenCL or MPI. Project ExaStencils pursued a domain-specific

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3364::a26303438b6dd2b308ac54cf427788c1
https://hdl.handle.net/2128/26674

Multigrid smoothers for saddle point systems

Autor: Claus, Lisa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1f475160cc2dd2bc534d96a21051536

Local Fourier analysis of multigrid smoothers for the Stokes problem.

Autor: Bolten, Matthias, Claus, Lisa

Publikováno v: PAMM: Proceedings in Applied Mathematics & Mechanics; Nov2019, Vol. 19 Issue 1, pN.PAG-N.PAG, 1p