Search results for: PCG SOLVER

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

  Publication

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

  - COMPUTER PHYSICS COMMUNICATIONS - Year 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...

  Full text to download in external service