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Impact of OpenMP Optimizations for the MGCG Method

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High Performance Computing (ISHPC 2000)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1940))

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Abstract

This paper shows several optimization techniques in OpenMP and investigates their impact using the MGCG method. MGCG is important for not only an efficient solver but also benchmarking since it includes several essential operations for high-performance computing. We evaluate several optimizing techniques on an SGI Origin 2000 using the SGI MIPSpro compiler and the RWCP Omni OpenMP compiler. In the case of the RWCP Omni OpenMP compiler, the optimization greatly improves performance, whereas for the SGI MIPSpro compiler, it does not affect very much though the optimized version scales well up to 16 processors with a larger problem. This impact is examined by a light-weight profiling tool bundled with the Omni compiler. We propose several new directives for further performance and portability of OpenMP.

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References

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Author information

Authors and Affiliations

  1. Electrotechnical Laboratory, 1-1-4 Umezono, 305-8568, Ibaraki, Tsukuba, JAPAN

    Osamu Tatebe & Satoshi Sekiguchi

  2. Real World Computing Partnership, 1-6-1 Takezono, 305-0032, Ibaraki, Tsukuba, JAPAN

    Mitsuhisa Sato

Authors
  1. Osamu Tatebe
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  2. Mitsuhisa Sato
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  3. Satoshi Sekiguchi
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Editor information

Editors and Affiliations

  1. Departamento de Arquitectura de Computadores, Universidad Politecnica de Catalunya, Spain

    Mateo Valero

  2. Department of Information and Computer Sciences, Nara Women’s University, Japan

    Kazuki Joe

  3. Institute of Industrial Science Center for Conceptual Information Processing Research, University of Tokyo, Japan

    Masaru Kitsuregawa

  4. Graduate School of Engineering Electrical Engineering Department, University of Tokyo, Japan

    Hidehiko Tanaka

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© 2000 Springer-Verlag Berlin Heidelberg

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Tatebe, O., Sato, M., Sekiguchi, S. (2000). Impact of OpenMP Optimizations for the MGCG Method. In: Valero, M., Joe, K., Kitsuregawa, M., Tanaka, H. (eds) High Performance Computing. ISHPC 2000. Lecture Notes in Computer Science, vol 1940. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-39999-2_44

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  • DOI: https://doi.org/10.1007/3-540-39999-2_44

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-41128-4

  • Online ISBN: 978-3-540-39999-5

  • eBook Packages: Springer Book Archive

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