Results 281 to 290 of about 5,336 (304)

Multithreaded Direction Preserving Preconditioners

2014 IEEE 13th International Symposium on Parallel and Distributed Computing, 2014
The scalability and robustness of a class of nonoverlapping domain decomposition preconditioners using 2-way nested dissection reordering is studied. We consider two different factorizations: nested and block versions. Both these variants have advantages and disadvantages.
openaire   +1 more source

On a BPX-preconditioner for P1 elements

Computing, 1993
An optimal multilevel preconditioner for nonconforming P1 elements discretizations of second order elliptic boundary value problems is derived. The resulting condition numbers are uniformly bounded with respect to the number of levels \(j\) which is known for the conforming case, and improve the previous results for nonconforming P1 elements.
openaire   +1 more source

SOR as a Preconditioner

1994
We show by experimental results on some convection-diffusion type equations that the SOR iteration may be a promising preconditioner in conjunction with the GMRES method. Our results indicate that it is critical to take several Gauss-Seidel or SOR iterations, rather than just one, and that at least a factor of two improvement over Gauss-Seidel can be ...
openaire   +1 more source

Robust block preconditioners for poroelasticity

Computer Methods in Applied Mechanics and Engineering, 2020
Shuangshuang Chen, Qingguo Hong, Jinchao Xu   +2 more
exaly  

Preconditioners

2015
Efstratios Gallopoulos, Bernard Philippe, Ahmed H. Sameh   +2 more
openaire   +1 more source

Robust Preconditioners for a New Stabilized Discretization of the Poroelastic Equations

SIAM Journal of Scientific Computing, 2020
James H Adler, FRANCISCO J Gaspar, Xiaozhe Hu   +2 more
exaly  

BPX preconditioners for isogeometric analysis using (truncated) hierarchical B-splines

Computer Methods in Applied Mechanics and Engineering, 2021
Cesare Bracco, Durkbin Cho, Carlotta Giannelli   +2 more
exaly  

A Preconditioner for Spectral Collocation

SIAM Journal on Scientific Computing
Aurya Javeed, Drew P. Kouri, Denis Ridzal, John D. Steinman   +3 more
openaire   +1 more source

Maximum-weight-basis preconditioners

Numerical Linear Algebra With Applications, 2004
Erik G Boman, Doron Chen, Bruce Hendrickson   +2 more
exaly  

Lower Bounds for Two-Level Additive Schwarz Preconditioners with Small Overlap

SIAM Journal of Scientific Computing, 2000
Susanne C Brenner
exaly