Orderings for Incomplete Factorization Preconditioning of Nonsymmetric Problems
Orderings for Incomplete Factorization Preconditioning of Nonsymmetric Problems
Numerical experiments are presented whereby the effect of reorderings on the convergence of preconditioned Krylov subspace methods for the solution of nonsymmetric linear systems is shown. The preconditioners used in this study are different variants of incomplete factorizations. It is shown that certain reorderings for direct methods, such as reverse …