clique
A parallel sweeping preconditioner for heterogeneous 3D Helmholtz equations. A parallelization of a sweeping preconditioner for three-dimensional Helmholtz equations without large cavities is introduced and benchmarked for several challenging velocity models. The setup and application costs of the sequential preconditioner are shown to be O(γ 2 N 4/3 ) and O(γNlogN), where γ(ω) denotes the modestly frequency-dependent number of grid points per perfectly matched layer. Several computational and memory improvements are introduced relative to using black-box sparse-direct solvers for the auxiliary problems, and competitive runtimes and iteration counts are reported for high-frequency problems distributed over thousands of cores. Two open-source packages are released along with this paper: parallel sweeping preconditioner (PSP) and the underlying distributed multifrontal solver, clique.
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References in zbMATH (referenced in 26 articles )
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Sorted by year (- Diwan, Ganesh C.; Mohamed, M. Shadi: Iterative solution of Helmholtz problem with high-order isogeometric analysis and finite element method at mid-range frequencies (2020)
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- Fu, Shubin; Gao, Kai; Gibson, Richard L. jun.; Chung, Eric T.: An efficient high-order multiscale finite element method for frequency-domain elastic wave modeling (2019)
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- Liu, Fei; Ying, Lexing: Sparsify and sweep: an efficient preconditioner for the Lippmann-Schwinger equation (2018)
- Safin, Artur; Minkoff, Susan; Zweck, John: A preconditioned finite element solution of the coupled pressure-temperature equations used to model trace gas sensors (2018)
- Vion, Alexandre; Geuzaine, Christophe: Improved sweeping preconditioners for domain decomposition algorithms applied to time-harmonic Helmholtz and Maxwell problems (2018)
- Xu, Yingxiang: The influence of domain truncation on the performance of optimized Schwarz methods (2018)
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- Calandra, H.; Gratton, S.; Vasseur, X.: A geometric multigrid preconditioner for the solution of the Helmholtz equation in three-dimensional heterogeneous media on massively parallel computers (2017)
- Erlangga, Yogi A.; García Ramos, Luis; Nabben, Reinhard: The multilevel Krylov-multigrid method for the Helmholtz equation preconditioned by the shifted Laplacian (2017)
- Lahaye, D.; Vuik, C.: How to choose the shift in the shifted Laplace preconditioner for the Helmholtz equation combined with deflation (2017)
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- Stolk, Christiaan C.: An improved sweeping domain decomposition preconditioner for the Helmholtz equation (2017)
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- Eslaminia, Mehran; Guddati, Murthy N.: A double-sweeping preconditioner for the Helmholtz equation (2016)
- Liu, Fei; Ying, Lexing: Recursive sweeping preconditioner for the three-dimensional Helmholtz equation (2016)
- Liu, Fei; Ying, Lexing: Additive sweeping preconditioner for the Helmholtz equation (2016)
- Stolk, Christiaan C.: A dispersion minimizing scheme for the 3-D Helmholtz equation based on ray theory (2016)