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The Climate Model ECHAM5 on NEC SX-8

In: High Performance Computing on Vector Systems 2008

Author

Listed:
  • Stefan Borowski

    (NEC Deutschland GmbH)

Abstract

Climate simulation codes like ECHAM5 consider the dynamics of the Earth system over a long period of time. The huge number of time steps to be propagated restricts the spatial discretization to comparably coarse grid resolutions. This requires scalable parallelizations based on the lowly resolved spatial domain which can cope with the computational effort in the non-parallelizable time domain. The paper on hand gives an overview of the optimization of ECHAM5 on the NEC SX-8 with respect to performance and scalability. Several single CPU and scalability optimization are described. The outcome of the optimizations is demonstrated in detailed performance measurements.

Suggested Citation

  • Stefan Borowski, 2009. "The Climate Model ECHAM5 on NEC SX-8," Springer Books, in: Michael Resch & Sabine Roller & Katharina Benkert & Martin Galle & Wolfgang Bez & Hiroaki Kobayashi (ed.), High Performance Computing on Vector Systems 2008, pages 155-162, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-85869-0_15
    DOI: 10.1007/978-3-540-85869-0_15
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