Preconditioning for an iterative elliptic solver on a vector processor

  • Authors:

  • Abdessamad Qaddouri;Jean Côté

  • Affiliations:

  • Recherche en prévision numérique, Meteorological Service of Canada, Dorval, QC, Canada;Recherche en prévision numérique, Meteorological Service of Canada, Dorval, QC, Canada

  • Venue:
  • VECPAR'02 Proceedings of the 5th international conference on High performance computing for computational science
  • Year:
  • 2002

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Abstract

A family of preconditioners for an iterative solver of a separable elliptic boundary value problem in spherical geometry arising in numerical weather prediction has been implemented and tested on a vector processor. The PCG-MILU(0) solver obtains practical convergence in a small number of iterations and outperforms a highly optimized direct solver at high-resolution.