Journal
SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS
Volume 26, Issue 4, Pages 962-984Publisher
SIAM PUBLICATIONS
DOI: 10.1137/S0895479803422014
Keywords
GMRES; iterative methods; Krylov subspace; restart; nonsymmetric linear systems
Categories
Ask authors/readers for more resources
We have observed that the residual vectors at the end of each restart cycle of restarted GMRES often alternate direction in a cyclic fashion, thereby slowing convergence. We present a new technique for accelerating the convergence of restarted GMRES by disrupting this alternating pattern. The new algorithm resembles a full conjugate gradient method with polynomial preconditioning, and its implementation requires minimal changes to the standard restarted GMRES algorithm.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available