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Oliver A. Krzysik
cs.NAmath.NAcs.LGmath.OCphysics.comp-ph
On Valency
published · living versionsW_rm6er4q7·v1 · currentpublished
Multi-Trajectory Parallel-in-Iteration Optimization
with Guilherme H. M. Araujo, Hans De Sterck
1 version
Preprints & journals
20 papers in the corpus · 2019–2026Broken-space Additive Schwarz Mass Inverse Approximations and (Block) Preconditioning2607.12138v1 · Oliver A. Krzysik, Ben S. Southworth, Golo A. Wimmer2026 · 0 citationsarXiv
A black-box, multilevel algebraic preconditioning framework for conforming finite elements2607.07485v1 · O. A. Krzysik, B. S. Southworth, G. A. Wimmer2026 · 0 citationsarXiv
Two-level convergence of Algebraic Multigrid with Overlapping Smoothers and Spectral Coarse Grids2606.18404v1 · O. A. Krzysik, B. S. Southworth, H. Al Daas2026 · 0 citationsarXiv
Parallel-in-iteration optimization using multigrid reduction-in-time2603.20879v1 · G. H. M. Ara'ujo, O. A. Krzysik, H. De Sterck2026 · 0 citationsarXiv
Optimal transfer operators in algebraic two-level methods for nonsymmetric and indefinite problems2505.05598v2 · Oliver A. Krzysik, Ben S. Southworth, Golo A. Wimmer et al.2025 · 0 citationsarXiv
Generalized Optimal AMG Convergence Theory for Stokes Equations Using Smooth Aggregation and Vanka Relaxation Strategies2501.06621v1 · Ahsan Ali, James J. Brannick, Karsten Kahl et al.2025 · 0 citationsarXiv
Overlapping Schwarz methods are not anisotropy-robust multigrid smoothers2501.00938v1 · Oliver A. Krzysik, Ben S. Southworth, Bobby Philip2025 · 1 citationarXiv
Parallel-in-time solution of hyperbolic PDE systems via characteristic-variable block preconditioning2407.03873v2 · O. A. Krzysik, H. De Sterck, R. D. Falgout et al.2024 · 2 citationsarXiv
First-order PDES for Graph Neural Networks: Advection And Burgers Equation Models2404.03081v1 · Yifan Qu, Oliver Krzysik, Hans De Sterck et al.2024 · 0 citationsarXiv
Generalized Optimal AMG Convergence Theory for Nonsymmetric and Indefinite Problems2401.11146v3 · Ahsan Ali, James Brannick, Karsten Kahl et al.2024 · 3 citationsarXiv
Parallel-in-time solution of scalar nonlinear conservation laws2401.04936v2 · O. A. Krzysik, H. De Sterck, R. D. Falgout et al.2024 · 2 citationsarXiv
Asymptotic convergence of restarted Anderson acceleration for certain normal linear systems2312.04776v4 · Oliver A. Krzysik, Hans De Sterck, Adam Smith2023 · 3 citationsarXiv
Constrained Local Approximate Ideal Restriction for Advection-Diffusion Problems2307.00229v2 · Ahsan Ali, James Brannick, Karsten Kahl et al.2023 · 6 citationsSIAM J. SCI. COMPUT. 2024 Vol. 0, No. 0, pp. S96-S122
Efficient multigrid reduction-in-time for method-of-lines discretizations of linear advection2209.06916v2 · H. De Sterck, R. D. Falgout, O. A. Krzysik et al.2022 · 8 citationsarXiv
Multigrid reduction-in-time convergence for advection problems: A Fourier analysis perspective2208.01526v3 · H. De Sterck, S. Friedhoff, O. A. Krzysik et al.2022 · 5 citationsarXiv
Fast multigrid reduction-in-time for advection via modified semi-Lagrangian coarse-grid operators2203.13382v2 · H. De Sterck, R. D. Falgout, O. A. Krzysik2022 · 6 citationsarXiv
Fast solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part II: nonlinearities and DAEs2101.01776v3 · Ben S. Southworth, Oliver Krzysik, Will Pazner2021 · 18 citationsarXiv
Fast solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part I: the linear setting2101.00512v4 · Ben S. Southworth, Oliver Krzysik, Will Pazner et al.2021 · 27 citationsarXiv
Optimizing multigrid reduction-in-time (MGRIT) and Parareal coarse-grid operators for linear advection1910.03726v3 · Hans De Sterck, Robert D. Falgout, Stephanie Friedhoff et al.2019 · 31 citationsarXiv
On selecting coarse-grid operators for Parareal and MGRIT applied to linear advection1902.07757v2 · Oliver A. Krzysik, Hans De Sterck, Scott P. MacLachlan et al.2019 · 4 citationsarXiv
Career total: 33 works. 20 are in this corpus.
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