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• An extended basis inexact shift–invert Lanczos for the efficient solution of large-scale generalized eigenproblems

  Publikacja

  • M. Rewieński
  • A. Lamęcki
  • M. Mrozowski

  - COMPUTER PHYSICS COMMUNICATIONS - Rok 2013

  This paper proposes a technique, based on the Inexact Shift–Invert Lanczos (ISIL) method with Inexact Jacobi Orthogonal Component Correction (IJOCC) refinement, and a preconditioned conjugate-gradient (PCG) linear solver with multilevel preconditioner, for finding several eigenvalues for generalized symmetric eigenproblems. Several eigenvalues are found by constructing (with the ISIL process) an extended projection basis. Presented...

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