A fast implementation for GMRES method

  • Authors:
  • E. H. Ayachour

  • Affiliations:
  • Laboratoire de mathématiques appliquées (LMAH), Faculté des sciences et techniques, Université du Havre, 25 rue de Ph. Lebon B.P. 540, 76058 Le Havre, France

  • Venue:
  • Journal of Computational and Applied Mathematics
  • Year:
  • 2003

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Abstract

For the popular iterative method GMRES, we present a new and simple implementation which has the property of not using Givens rotations. This implementation does not modify the Arnoldi process and has an advantage in both the computational effort and the storage requirements. The corresponding restarted GMRES method is also considered.