Efficient model order reduction of large-scale systems on multi-core platforms

  • Authors:
  • P. Ezzatti;E. S. Quintana-Ortí;A. Remón

  • Affiliations:
  • Centro de Cálculo-Instituto de Computación, Universidad de la República, Montevideo, Uruguay;Depto. de Ingeniería y Ciencia de Computadores, Universidad Jaume I, Castellón, Spain;Depto. de Ingeniería y Ciencia de Computadores, Universidad Jaume I, Castellón, Spain

  • Venue:
  • ICCSA'11 Proceedings of the 2011 international conference on Computational science and Its applications - Volume Part V
  • Year:
  • 2011

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Abstract

We propose an efficient implementation of the Balanced Truncation (BT) method for model order reduction when the state-space matrix is symmetric (positive definite). Most of the computational effort required by this method is due to the computation of matrix inverses. Two alternatives for the inversion of a symmetric positive definite matrix on multi-core platforms are studied and evaluated, the traditional approach based on the Cholesky factorization and the Gauss-Jordan elimination algorithm. Implementations of both methods have been developed and tested. Numerical experiments show the efficiency attained by the proposed implementations on the target architecture.