Results 201 to 210 of about 11,516 (229)

Asynchronous Multigrid Methods

2019 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2019
Reducing synchronization in iterative methods for solving large sparse linear systems may become one of the most important goals for such solvers on exascale computers. Research in asynchronous iterative methods has primarily considered basic iterative methods. In this paper, we examine how multigrid methods can be executed asynchronously.
Jordi Wolfson-Pou, Edmond Chow
openaire   +1 more source

Multigrid Bifurcation Iteration

SIAM Journal on Numerical Analysis, 1985
The paper uses a multigrid technique for the numerical computation of bifurcation points of large sparse systems of nonlinear, parameterized equations arising in the discretization of certain elliptic boundary value problems. More specifically, problems of the form (1) \(Lu=f(\lambda,u)\) in \(\Omega\), \(Bu=0\) on \(\partial \Omega\) are considered ...
openaire   +1 more source

Parallel geometric multigrid

International Journal of Computing Science and Mathematics, 2016
The paper describes practical approach for minimising the parallelisation overhead for a solution to the boundary value problems by geometric multigrid methods. It is shown that proposed multiple coarse grid correction strategy makes it possible not only to create the task of the smoother least demanding, but also to avoid load imbalance and limit the ...
Serguei Martynenko, Vladimir Volokhov, Leonid S. Yanovskiy   +2 more
openaire   +1 more source

Kernel multigrid on manifolds

Journal of Complexity
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Thomas Hangelbroek, Christian Rieger
openaire   +1 more source

Multigrid methods

Numerical Linear Algebra with Applications, 2021
openaire   +1 more source

Formalisation of the multigrid computations

International Journal of Computing Science and Mathematics, 2013
The paper represents a robust multigrid algorithm for solving a large class of applied problems from Poisson equation to Navier-Stokes equations on the structured grids. The algorithm consists of the robust multigrid technique variant of the geometric multigrid methods with the problem-independent transfer operators and the smoothing procedure based on
openaire   +1 more source

On a robust multigrid solver

Computing, 1996
The author is concerned with the robustness of multigrid solvers for discrete rotated anisotropic diffusion equations and discrete convection-diffusion equations with respect to variations in problem-related parameters. In particular, he develops two-grid methods relying on Schur complement approximations whose convergence is studied by means of a ...
openaire   +3 more sources

Adaptive multigrid in parallel

Proceedings 1st International Conference on Algorithms and Architectures for Parallel Processing, 2002
Early experiments with parallel multigrid used square domains and uniform grids. More recently, several authors have considered problems with more complicated domains (see for example McCormick's AFAC method (1989) and Baden et al. (1994)). However, these methods still use structured grids.
openaire   +1 more source

Surface multigrid via intrinsic prolongation

ACM Transactions on Graphics, 2021
Mirela Ben-Chen, Alec Jacobson, Ben-Chenmirela   +2 more
exaly  

p-multigrid methods and their comparison to h-multigrid methods within Isogeometric Analysis

Computer Methods in Applied Mechanics and Engineering, 2020
Matthias Möller, C Vuik
exaly