Improving Triangular Preconditioner Updates for Nonsymmetric Linear Systems

Abstract. We present an extension of an update technique for preconditioners for sequences of non-symmetric linear systems that was proposed in [5]. In addition, we describe an idea to improve the implementation of the update technique. We demonstrate the superiority of the new approaches in numerical experiments with a model problem.

• Type: Conference
• Year: 2007
• Where: LSSC
• Authors: Jurjen Duintjer Tebbens, Miroslav Tuma
• Keywords: Applied Computing, LSSC 2007, Model Problem, Non-symmetric Linear Systems, Update Technique