32 citations · 53 across the 9 of their papers we have counts for
11 papers
Multigrid reduction-in-time convergence for advection problems: A Fourier analysis perspective
H. De Sterck, S. Friedhoff, O. A. Krzysik +1
A long-standing issue in the parallel-in-time community is the poor convergence of standard iterative parallel-in-time methods for hyperbolic partial differential equations (PDEs),…
Asynchronous Truncated Multigrid-reduction-in-time (AT-MGRIT)
Jens Hahne, Ben Southworth, Stephanie Friedhoff
In this paper, we present the new "asynchronous truncated multigrid-reduction-in-time" (AT-MGRIT) algorithm for introducing time parallelism to the solution of discretized time-dep…
Weighted Relaxation for Multigrid Reduction in Time
Masumi Sugiyama, Jacob B. Schroder, Ben S. Southworth +1
Based on current trends in computer architectures, faster compute speeds must come from increased parallelism rather than increased clock speeds, which are currently stagnate. This…
PyMGRIT: A Python Package for the parallel-in-time method MGRIT
Jens Hahne, Stephanie Friedhoff, Matthias Bolten
In this paper, we introduce the Python framework PyMGRIT, which implements the multigrid-reduction-in-time (MGRIT) algorithm for solving the (non-)linear systems arising from the d…
Parallel-in-Time Simulation of an Electrical Machine using MGRIT
Matthias Bolten, Stephanie Friedhoff, Jens Hahne +1
We apply the multigrid-reduction-in-time (MGRIT) algorithm to an eddy current simulation of a two-dimensional induction machine supplied by a pulse-width-modulation signal. To reso…
Optimizing multigrid reduction-in-time (MGRIT) and Parareal coarse-grid operators for linear advection
Hans De Sterck, Robert D. Falgout, Stephanie Friedhoff +2
Parallel-in-time methods, such as multigrid reduction-in-time (MGRIT) and Parareal, provide an attractive option for increasing concurrency when simulating time-dependent PDEs in m…