## The dawn of massively parallel processing in meterology: proceedings of the 3rd Workshop on Use of Parallel Processors in MeteorologyThe Dawn of Massively Parallel Processing in Meteorology presents collected papers of the third workshop on this topic held at the European Centre of Medium-Range Weather Forecasts (ECMWF). It provides an insight into the state of the art in using parallel processors operationally, and allows extrapolation to other time-critical applications. It also documents the advent of massively parallel systems to cope with these applications. |

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### Contents

An Introduction to Parallel Processing in Meteorology | 3 |

A Modestly Parallel Model | 19 |

Implementation of Atmospheric Models on Large | 32 |

Copyright | |

16 other sections not shown

### Common terms and phrases

algorithm allocation applications approximately architecture array Autotasking bandwidth boundary calculations CFPP CMIC communication compiler complexity concurrency configuration Connection Machine Cray CRAY X-MP Cyber dataflow dependence dimensional direction domain ECMWF efficient elements example execution Figure finite difference forecast Fortran Fourier global grid gridpoints hardware HIRLAM HIRLAM program horizontal hypercube implementation instructions ISTAT iteration large number latency loop massively parallel computers matrix megaflops Meteorological Models methods Mflops microtasking multigrid multiple multiprocessor multitasking NCAR NMAX node number of processors numerical weather prediction occam operating system optimal overhead parallel processing parameters Parawell performance physical primitive equations problem ratio scalar scheme sequential serial shallow water equations shared memory SIMD simulation single solution solvers spectral speed speedup step structure subroutine supercomputers SUPRENUM synchronisation synchronization tasks timestep topology transform transputer values variables vector vector processing vertical virtual processors weather models