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

• Autores: A. Rafiei, F. Toutounian
• Localización: Journal of computational and applied mathematics, ISSN 0377-0427, Vol. 230, Nº 2, 2009, págs. 699-705
• Idioma: inglés
• DOI: 10.1016/j.cam.2009.01.011
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• Resumen

  • 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 A-biorthogonalization 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 of Benzi and Tuma is also included.