We consider optimal-scaling multigrid solvers for the linear systems that arise from the discretization of problems with evolutionary behavior. Typically, solution algorithms for …
We present and analyze a new space-time parallel multigrid method for parabolic equations. The method is based on arbitrarily high order discontinuous Galerkin discretizations in time …
The need for parallelism in the time dimension is being driven by changes in computer architectures, where performance increases are now provided through greater concurrency …
We consider the comparison of multigrid methods for parabolic partial differential equations that allow space–time concurrency. With current trends in computer architectures leading …
J Dünnebacke, S Turek, C Lohmann… - … Journal of High …, 2021 - journals.sagepub.com
We discuss how “parallel-in-space & simultaneous-in-time” Newton-multigrid approaches can be designed which improve the scaling behavior of the spatial parallelism by reducing …
Multigrid and related multilevel methods are the approaches of choice for solving linear systems that result from discretization of a wide class of PDEs. A large gap, however, exists …
This paper investigates the efficiency, robustness, and scalability of approximate ideal restriction (AIR) algebraic multigrid as a preconditioner in the all-at-once solution of a space …
D Krause, R Krause - Applied Mathematics and Computation, 2016 - Elsevier
For many applications, local time stepping offers an interesting and worthwhile alternative to the by now well established global time step control. In fact, local time stepping can allow for …
S Li, X Shao, XC Cai - SIAM Journal on Scientific Computing, 2018 - SIAM
In this paper, we present a multilevel space-time additive Schwarz method for solving linear system of equations arising from the discretization of parabolic equations. With this method …