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Supercomputing pp 71–85Cite as

Supercomputing at KFA Jülich: Experiences and Applications on CRAY X-MP

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Part of the book series: NATO ASI Series ((NATO ASI F,volume 62))

Abstract

KFA Jülich is one of the largest big-science research centers in Europe. At KFA, computational science based on supercomputer techniques has received high priority for many years. Primarily, CRAY supercomputer power has been exploited in the single processor mode by applying vectorization and optimization techniques to numerical kernels and large applications. However, on the multiprocessor vector-supercomputers CRAY X-MP and Y-MP, parallelism — beyond vectorization — can be exploited by multitasking. With increasing number of powerful processors, multitasking strategies like macrotasking, microtasking, and autotasking will become more important and profitable to utilize these multiprocessor systems efficiently. Multitasking results and experiences have been gained by applying these modes to linear-algebra and non-numerical algorithms as well as to large codes. While comparing the results and the concepts of multitasking, the problems, benefits, and perspectives of multitasking programming will be discussed.

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Author information

Authors and Affiliations

  1. Zentralinstitut für Angewandte Mathematik (ZAM), Kernforschungsanlage Jülich GmbH, Postfach 1913, 5170, Jülich, Fed. Rep. Germany

    F. Hossfeld

Authors
  1. F. Hossfeld
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Editor information

Editors and Affiliations

  1. Engineering Computing and Analysis, Boeing Computer Services, P.O. Box 24346, Seattle, WA, 98124, USA

    Janusz S. Kowalik

  2. Department of Computer Science and Engineering, University of Washington, Seattle, WA, 98195, USA

    Janusz S. Kowalik

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© 1990 Springer-Verlag Berlin Heidelberg

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Hossfeld, F. (1990). Supercomputing at KFA Jülich: Experiences and Applications on CRAY X-MP. In: Kowalik, J.S. (eds) Supercomputing. NATO ASI Series, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-75771-6_4

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  • DOI: https://doi.org/10.1007/978-3-642-75771-6_4

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-75773-0

  • Online ISBN: 978-3-642-75771-6

  • eBook Packages: Springer Book Archive

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