Abstract
In this paper, we introduce two new methods for solving large sparse nonsymmetric linear systems with several right-hand sides. These methods are the global Hessenberg and global CMRH methods. Using the global Hessenberg process, these methods are less expensive than the global FOM and global GMRES methods [9]. Theoretical results about the new methods are given, and experimental results that show good performances of these new methods are presented.
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Heyouni, M. The global Hessenberg and CMRH methods for linear systems with multiple right-hand sides. Numerical Algorithms 26, 317–332 (2001). https://doi.org/10.1023/A:1016603612931
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DOI: https://doi.org/10.1023/A:1016603612931