Ben S. Southworth

77 papers Journal 77

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Algebraic Multigrid with Overlapping Schwarz Smoothers and Local Spectral Coarse Grids for Least Squares Problems. CoRR Ben S. Southworth, Hussam Al Daas, Golo A. Wimmer, Ed Threlfall
2026	J	`jnl`	Beyond Muon: MUD (MomentUm Decorrelation) for Faster Transformer Training. CoRR Ben S. Southworth, Stephen Thomas
2026	J	`jnl`	ECLEIRS: Exact conservation law embedded identification of reduced states for parameterized nonlinear conservation laws from sparse and noisy data. J. Comput. Phys. Aviral Prakash, Ben S. Southworth, Marc Louis Klasky
2026	J	`jnl`	Multilevel Training for Kolmogorov Arnold Networks. CoRR Ben S. Southworth, Jonas A. Actor, Graham Harper, Eric C. Cyr
2026	J	`jnl`	On the Convergence Behavior of Preconditioned Gradient Descent Toward the Rich Learning Regime. CoRR Shuai Jiang, Alexey Voronin, Eric C. Cyr, Ben S. Southworth
2025	J	`jnl`	A New Class of Runge-Kutta Methods for Nonlinearly Partitioned Systems. SIAM J. Sci. Comput. Tommaso Buvoli, Ben S. Southworth
2025	J	`jnl`	A structure-preserving discontinuous Galerkin scheme for the Cahn-Hilliard equation including time adaptivity. J. Comput. Phys. Golo A. Wimmer, Ben S. Southworth, Qi Tang
2025	J	`jnl`	Causal Multi-fidelity Surrogate Forward and Inverse Models for ICF Implosions. CoRR Tyler E. Maltba, Ben S. Southworth, Jeffrey R. Haack, Marc Louis Klasky
2025	J	`jnl`	Consistent Second Moment Methods with Scalable Linear Solvers for Radiation Transport. SIAM J. Sci. Comput. Samuel S. Olivier, Ben S. Southworth, James S. Warsa, HyeongKae Park
2025	J	`jnl`	Generalized Optimal AMG Convergence Theory for Stokes Equations Using Smooth Aggregation and Vanka Relaxation Strategies. CoRR Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth, Alexey Voronin
2025	J	`jnl`	Implicit-Explicit Scheme with Multiscale Vanka Two-Grid Solver for Heterogeneous Unsaturated Poroelasticity. CoRR Maria V. Vasilyeva, Ben S. Southworth, Yunhui He, Min Wang
2025	J	`jnl`	Learning robust parameter inference and density reconstruction in flyer plate impact experiments. CoRR Evan Bell, Daniel A. Serino, Ben S. Southworth, Trevor Wilcox, Marc Louis Klasky
2025	J	`jnl`	Leveraging KANs for Expedient Training of Multichannel MLPs via Preconditioning and Geometric Refinement. CoRR Jonas A. Actor, Graham Harper, Ben S. Southworth, Eric C. Cyr
2025	J	`jnl`	Moment-based adaptive time integration for thermal radiation transport. CoRR Ben S. Southworth, Steven Walton, Steven B. Roberts, HyeongKae Park
2025	J	`jnl`	Moment-based adaptive time integration for thermal radiation transport. J. Comput. Phys. Ben S. Southworth, Steven Walton, Steven B. Roberts, HyeongKae Park
2025	J	`jnl`	Multirate Runge-Kutta for Nonlinearly Partitioned Systems. CoRR Tommaso Buvoli, Brian K. Tran, Ben S. Southworth
2025	J	`jnl`	Multiscale Graph Reduction for Heterogeneous and Anisotropic Discrete Diffusion Processes. CoRR Maria V. Vasilyeva, James J. Brannick, Ben S. Southworth
2025	J	`jnl`	Multiscale approximation and two-grid preconditioner for extremely anisotropic heat flow. J. Comput. Phys. Maria V. Vasilyeva, Golo A. Wimmer, Ben S. Southworth
2025	J	`jnl`	Optimal transfer operators in algebraic two-level methods for nonsymmetric and indefinite problems. CoRR Oliver A. Krzysik, Ben S. Southworth, Golo A. Wimmer
2025	J	`jnl`	Overlapping Schwarz methods are not anisotropy-robust multigrid smoothers. CoRR Oliver A. Krzysik, Ben S. Southworth, Bobby Philip
2025	J	`jnl`	Preconditioning a hybridizable discontinuous Galerkin method for Navier-Stokes at high Reynolds number. CoRR Alexander D. Lindsay, Sander Rhebergen, Ben S. Southworth
2025	J	`jnl`	Preconditioning transformations of adjoint systems for evolution equations. CoRR Brian K. Tran, Ben S. Southworth, Hannah F. Blumhoefer, Samuel S. Olivier
2025	J	`jnl`	TorchBraid: High-Performance Layer-Parallel Training of Deep Neural Networks with MPI and GPU Acceleration. ACM Trans. Math. Softw. Eric C. Cyr, Jens Hahne, Nicholas S. Moore, Jacob B. Schroder, Ben S. Southworth, David A. Vargas
2024	J	`jnl`	A Fast Algebraic Multigrid Solver and Accurate Discretization for Highly Anisotropic Heat Flux I: Open Field Lines. SIAM J. Sci. Comput. Golo A. Wimmer, Ben S. Southworth, Thomas J. Gregory, Xian-Zhu Tang
2024	J	`jnl`	A New Class of Runge-Kutta Methods for Nonlinearly Partitioned Systems. CoRR Tommaso Buvoli, Ben S. Southworth
2024	J	`jnl`	A structure-preserving discontinuous Galerkin scheme for the Cahn-Hilliard equation including time adaptivity. CoRR Golo A. Wimmer, Ben S. Southworth, Qi Tang
2024	J	`jnl`	An accurate SUPG-stabilized continuous Galerkin discretization for anisotropic heat flux in magnetic confinement fusion. CoRR Golo A. Wimmer, Ben S. Southworth, Koki Sagiyama, Xian-Zhu Tang
2024	J	`jnl`	An adaptive two-grid preconditioner for flow in fractured porous media. CoRR Maria V. Vasilyeva, Ben S. Southworth, Shubin Fu
2024	J	`jnl`	Consistent Second Moment Methods with Scalable Linear Solvers for Radiation Transport. CoRR Samuel S. Olivier, Ben S. Southworth, James S. Warsa, HyeongKae Park
2024	J	`jnl`	Constrained Local Approximate Ideal Restriction for Advection-Diffusion Problems. SIAM J. Sci. Comput. Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth
2024	J	`jnl`	Galerkin Formulation of Path Integrals in Lattice Field Theory. CoRR Brian K. Tran, Ben S. Southworth
2024	J	`jnl`	Generalized Optimal AMG Convergence Theory for Nonsymmetric and Indefinite Problems. CoRR Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth
2024	J	`jnl`	Implicit-explicit Runge-Kutta for radiation hydrodynamics I: Gray diffusion. J. Comput. Phys. Ben S. Southworth, HyeongKae Park, Svetlana Tokareva, Marc Charest
2024	J	`jnl`	Learning physical unknowns from hydrodynamic shock and material interface features in ICF capsule implosions. CoRR Daniel A. Serino, Evan Bell, Marc Louis Klasky, Ben S. Southworth, Balasubramanya T. Nadiga, Trevor Wilcox, Oleg Korobkin
2024	J	`jnl`	Multiscale approximation and two-grid preconditioner for extremely anisotropic heat flow. CoRR Maria V. Vasilyeva, Golo A. Wimmer, Ben S. Southworth
2024	J	`jnl`	On Compatible Transfer Operators in Nonsymmetric Algebraic Multigrid. SIAM J. Matrix Anal. Appl. Ben S. Southworth, Thomas A. Manteuffel
2024	J	`jnl`	On Properties of Adjoint Systems for Evolutionary PDEs. CoRR Brian K. Tran, Ben S. Southworth, Melvin Leok
2024	J	`jnl`	On Properties of Adjoint Systems for Evolutionary PDEs. J. Nonlinear Sci. Brian K. Tran, Ben S. Southworth, Melvin Leok
2024	J	`jnl`	One-sweep moment-based semi-implicit-explicit integration for gray thermal radiation transport. CoRR Ben S. Southworth, Samuel S. Olivier, HyeongKae Park, Tommaso Buvoli
2024	J	`jnl`	One-sweep moment-based semi-implicit-explicit integration for gray thermal radiation transport. J. Comput. Phys. Ben S. Southworth, Samuel S. Olivier, HyeongKae Park, Tommaso Buvoli
2024	J	`jnl`	Order Conditions for Nonlinearly Partitioned Runge-Kutta Methods. CoRR Brian K. Tran, Ben S. Southworth, Tommaso Buvoli
2023	J	`jnl`	A fast algebraic multigrid solver and accurate discretization for highly anisotropic heat flux I: open field lines. CoRR Golo A. Wimmer, Ben S. Southworth, Thomas J. Gregory, Xianzhu Tang
2023	J	`jnl`	Additive Polynomial Time Integrators, Part I: Framework and Fully Implicit-Explicit Collocation Methods. SIAM J. Sci. Comput. Tommaso Buvoli, Ben S. Southworth
2023	J	`jnl`	Asynchronous Truncated Multigrid-Reduction-in-Time. SIAM J. Sci. Comput. Jens Hahne, Ben S. Southworth, Stephanie Friedhoff
2023	J	`jnl`	Constrained Local Approximate Ideal Restriction for Advection-Diffusion Problems. CoRR Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth
2023	J	`jnl`	Implicit-explicit Runge-Kutta for radiation hydrodynamics I: gray diffusion. CoRR Ben S. Southworth, Ryosuke Park, Svetlana Tokareva, Marc Charest
2023	J	`jnl`	On Compatible Transfer Operators in Nonsymmetric Algebraic Multigrid. CoRR Ben S. Southworth, Thomas A. Manteuffel
2023	J	`jnl`	PyAMG: Algebraic Multigrid Solvers in Python. J. Open Source Softw. Nathan Bell, Luke N. Olson, Jacob B. Schroder, Ben S. Southworth
2023	J	`jnl`	Space-Time Block Preconditioning for Incompressible Resistive Magnetohydrodynamics. CoRR Federico Danieli, Ben S. Southworth, Jacob B. Schroder
2023	J	`jnl`	Weighted relaxation for multigrid reduction in time. Numer. Linear Algebra Appl. Masumi Sugiyama, Jacob B. Schroder, Ben S. Southworth, Stephanie Friedhoff
2022	J	`jnl`	An algebraic preconditioner for the exactly divergence-free discontinuous Galerkin method for Stokes. CoRR Sander Rhebergen, Ben S. Southworth
2022	J	`jnl`	Arbitrary Order Energy and Enstrophy Conserving Finite Element Methods for 2D Incompressible Fluid Dynamics and Drift-Reduced Magnetohydrodynamics. CoRR Milan Holec, Ben Zhu, Ilon Joseph, Christopher J. Vogl, Ben S. Southworth, Alejandro Campos, Andris M. Dimits, Will E. Pazner
2022	J	`jnl`	Fast Solution of Fully Implicit Runge-Kutta and Discontinuous Galerkin in Time for Numerical PDEs, Part I: the Linear Setting. SIAM J. Sci. Comput. Ben S. Southworth, Oliver A. Krzysik, Will Pazner, Hans De Sterck
2022	J	`jnl`	Fast Solution of Fully Implicit Runge-Kutta and Discontinuous Galerkin in Time for Numerical PDEs, Part II: Nonlinearities and DAEs. SIAM J. Sci. Comput. Ben S. Southworth, Oliver A. Krzysik, Will Pazner
2022	J	`jnl`	Space-Time Block Preconditioning for Incompressible Flow. SIAM J. Sci. Comput. Federico Danieli, Ben S. Southworth, Andrew J. Wathen
2021	J	`jnl`	AIR Algebraic Multigrid for a Space-Time Hybridizable Discontinuous Galerkin Discretization of Advection(-Diffusion). SIAM J. Sci. Comput. Abdullah Ali Sivas, Ben S. Southworth, Sander Rhebergen
2021	J	`jnl`	Addititive Polynomial Block Methods, Part I: Framework and Fully-Implicit Methods. CoRR Tommaso Buvoli, Ben S. Southworth
2021	J	`jnl`	Asynchronous Truncated Multigrid-reduction-in-time (AT-MGRIT). CoRR Jens Hahne, Ben S. Southworth, Stephanie Friedhoff
2021	J	`jnl`	Fast parallel solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part I: the linear setting. CoRR Ben S. Southworth, Oliver A. Krzysik, Will Pazner, Hans De Sterck
2021	J	`jnl`	Fast parallel solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part II: nonlinearities and DAEs. CoRR Ben S. Southworth, Oliver A. Krzysik, Will Pazner
2021	J	`jnl`	On "Optimal" h-independent convergence of Parareal and multigrid-reduction-in-time using Runge-Kutta time integration. Numer. Linear Algebra Appl. Stephanie Friedhoff, Ben S. Southworth
2021	J	`jnl`	Space-time block preconditioning for incompressible flow. CoRR Federico Danieli, Ben S. Southworth, Andrew J. Wathen
2021	J	`jnl`	Weighted Relaxation for Multigrid Reduction in Time. CoRR Masumi Sugiyama, Jacob B. Schroder, Ben S. Southworth, Stephanie Friedhoff
2020	J	`jnl`	A note on 2×2 block-diagonal preconditioning. CoRR Ben S. Southworth, Samuel S. Olivier
2020	J	`jnl`	AIR algebraic multigrid for a space-time hybridizable discontinuous Galerkin discretization of advection(-diffusion). CoRR Abdullah Ali Sivas, Ben S. Southworth, Sander Rhebergen
2020	J	`jnl`	Diffusion Synthetic Acceleration Preconditioning for Discontinuous Galerkin Discretizations of S SIAM J. Sci. Comput. Terry S. Haut, Ben S. Southworth, Peter G. Maginot, Vladimir Z. Tomov
2020	J	`jnl`	Diffusion synthetic acceleration for heterogeneous domains, compatible with voids. CoRR Ben S. Southworth, Milan Holec, Terry S. Haut
2020	J	`jnl`	Multilevel Convergence Analysis of Multigrid-Reduction-in-Time. SIAM J. Sci. Comput. Andreas Hessenthaler, Ben S. Southworth, David Nordsletten, Oliver Röhrle, Robert D. Falgout, Jacob B. Schroder
2020	J	`jnl`	On Fixed-Point, Krylov, and 2˟ 2 Block Preconditioners for Nonsymmetric Problems. SIAM J. Matrix Anal. Appl. Ben S. Southworth, Abdullah Ali Sivas, Sander Rhebergen
2020	J	`jnl`	Tight two-level convergence of Linear Parareal and MGRIT: Extensions and implications in practice. CoRR Ben S. Southworth, Wayne Mitchell, Andreas Hessenthaler, Federico Danieli
2019	J	`jnl`	Convergence in Norm of Nonsymmetric Algebraic Multigrid. SIAM J. Sci. Comput. Tom Manteuffel, Ben S. Southworth
2019	J	`jnl`	Necessary Conditions and Tight Two-level Convergence Bounds for Parareal and Multigrid Reduction in Time. SIAM J. Matrix Anal. Appl. Ben S. Southworth
2019	J	`jnl`	Nonsymmetric Reduction-Based Algebraic Multigrid. SIAM J. Sci. Comput. Thomas A. Manteuffel, Steffen Münzenmaier, John W. Ruge, Ben S. Southworth
2019	J	`jnl`	On "Optimal" h-Independent Convergence of Parareal and MGRIT using Runge-Kutta Time Integration. CoRR Stephanie Friedhoff, Ben S. Southworth
2019	J	`jnl`	On fixed-point, Krylov, and 2×2 block preconditioners for nonsymmetric problems. CoRR Ben S. Southworth, Abdullah Ali Sivas, Sander Rhebergen
2018	J	`jnl`	Nonsymmetric Algebraic Multigrid Based on Local Approximate Ideal Restriction (ℓAIR). SIAM J. Sci. Comput. Thomas A. Manteuffel, John W. Ruge, Ben S. Southworth
2017	J	`jnl`	A Root-Node-Based Algebraic Multigrid Method. SIAM J. Sci. Comput. Thomas A. Manteuffel, Luke N. Olson, Jacob B. Schroder, Ben S. Southworth