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Abstract

ECMWF has run a parallel spectral model in daily production since 1985. Initially, this executed on a Cray X-MP/22 and later on a Cray X-MP/48. The degree of high-level parallelism so far exploited is low because it is sufficient to provide the basic need, that is minimum wall clock execution time in a production environment. However, low-level parallelism in the form of vectorised Fortran code is very substantial. 99% of all floating point operations are performed in vector mode.

Keywords

Shared Memory Model Execution Meteorological Model Spectral Space Level Parallelism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Dent, D.W., The Multitasking Spectral Model at ECMWF, in: G.-R. Hoffmann and D.F. Snelling, eds., Multiprocessing in Meteorological Models ( Springer Verlag, Berlin, 1988 ) 203–213.CrossRefGoogle Scholar
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    Dent, D.W., The ECMWF model: Past, Present and Future, in: G.-R. Hoffmann and D.F. Snelling, eds., Multiprocessing in Meteorological Models ( Springer Verlag, Berlin, 1988 ) 369–381.CrossRefGoogle Scholar
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    Hoffman, O.-R and D.F. Snelling, A Comparative Study of the ECMWF Weather Model on several Multiprocessor Architectures, in: G.-R. Hoffmann and D.F. Snelling, eds., Multiprocessing in Meteorological Models ( Springer Verlag, Berlin, 1988 ) 419–432.CrossRefGoogle Scholar
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    Carver, G., A Spectral Meteorological Model on the ICL DAP, Parallel Comput. 8, (1988) 121–126.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • David Dent
    • 1
  1. 1.European Centre for Medium-Range Weather ForecastsReading, BerkshireUK

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