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Parallel PCG Solver for Nonconforming FE Problems: Overlapping of Communications and Computations

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Large-Scale Scientific Computing (LSSC 2005)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 3743))

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Abstract

New results concerning a recently introduced parallel preconditioner for the solution of large nonconforming FE linear systems are presented. The studied algorithm is based on the modified incomplete Cholesky factorization MIC(0) applied to a locally constructed approximation of the original stiffness matrix. The overlapping of communications and computations is possible due to a suitable reordering of the computations applied in the MPI code. The obtained improvement of the real performance is illustrated by numerical tests on a Beowulf-type Linux cluster and on a Sun Fire symmetric multiprocessor.

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References

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Author information

Authors and Affiliations

  1. Institute for Parallel Processing, Bulgarian Academy of Sciences, Acad. G. Bontchev, Bl. 25A, 1113, Sofia, Bulgaria

    Gergana Bencheva & Svetozar Margenov

  2. Institute of Geonics, Academy of Sciences of the Czech Republic, Studentská 1768, 70800, Ostrava, Czech Republic

    Jiří Starý

Authors
  1. Gergana Bencheva
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  2. Svetozar Margenov
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  3. Jiří Starý
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Editor information

Editors and Affiliations

  1. Institute for Parallel Processing, Bulgarian Academy of Sciences, Acad. G. Bonchev, Bl. 25A, 1113, Sofia, Bulgaria

    Ivan Lirkov

  2. Institute for Parallel Processing, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. Bl. 25-A, 1113, Sofia, Bulgaria

    Svetozar Margenov

  3. Informatics & Mathematical Modeling, Technical University of Denmark, DK-2800, Lyngby, Denmark

    Jerzy Waśniewski

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© 2006 Springer-Verlag Berlin Heidelberg

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Bencheva, G., Margenov, S., Starý, J. (2006). Parallel PCG Solver for Nonconforming FE Problems: Overlapping of Communications and Computations. In: Lirkov, I., Margenov, S., Waśniewski, J. (eds) Large-Scale Scientific Computing. LSSC 2005. Lecture Notes in Computer Science, vol 3743. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11666806_74

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  • DOI: https://doi.org/10.1007/11666806_74

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-31994-8

  • Online ISBN: 978-3-540-31995-5

  • eBook Packages: Computer ScienceComputer Science (R0)

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