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  • Benedusi, Pietro, et al. (author)
  • Fast Parallel Solver for the Space-time IgA-DG Discretization of the Diffusion Equation
  • 2021
  • In: Journal of Scientific Computing. - : Springer. - 0885-7474 .- 1573-7691. ; 89:1
  • Journal article (peer-reviewed)abstract
    • We consider the space-time discretization of the diffusion equation, using an isogeometric analysis (IgA) approximation in space and a discontinuous Galerkin (DG) approximation in time. Drawing inspiration from a former spectral analysis, we propose for the resulting space-time linear system a multigrid preconditioned GMRES method, which combines a preconditioned GMRES with a standard multigrid acting only in space. The performance of the proposed solver is illustrated through numerical experiments, which show its competitiveness in terms of iteration count, run-time and parallel scaling.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Serra-Capizzano, Ste ... (1)
Ferrari, Paola (1)
Garoni, Carlo (1)
Benedusi, Pietro (1)
Krause, Rolf (1)
University
Uppsala University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2021 (1)

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