Breakdown-free version of ILU factorization for nonsymmetric positive definite matrices

✍ Scribed by A. Rafiei; F. Toutounian

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 422 KB
• Volume: 230
• Category: Article
• ISSN: 0377-0427
• DOI: 10.1016/j.cam.2009.01.011

✦ Synopsis

In this paper a new ILU factorization preconditioner for solving large sparse linear systems by iterative methods is presented. The factorization which is based on Abiorthogonalization process is well defined for a general positive definite matrix. Numerical experiments illustrating the performance of the preconditioner are presented. A comparison with the well known preconditioner RIF p of Benzi and Tůma is also included.