Performance comparisons of Cholesky factorization algorithms using level-2 & 3 BLAS on the national advanced systems AS/XL Vector computer

  • Authors:

  • Glenn R. Luecke;Jae H. Yun;Howard W. Jespersen

  • Affiliations:

  • Department of Mathematics and Computation Center, Iowa State University, Ames, Iowa;Department of Mathematics and Computation Center, Iowa State University, Ames, Iowa;Department of Mathematics and Computation Center, Iowa State University, Ames, Iowa

  • Venue:
  • ICS '89 Proceedings of the 3rd international conference on Supercomputing
  • Year:
  • 1989

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Abstract

This paper contains three blocked Cholesky algorithms with calls to standard (level-1, level-2 or level-3) BLAS, one blocked Cholesky algorithm with calls to nonstandard level-2 BLAS and one unblocked Cholesky algorithm. Performance comparisons for these algorithms were done on a National Advanced Systems AS/XL V60 computer.