Towards petascale simulation of atmospheric circulations with soundproof equations |
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| Authors: | Zbigniew P Piotrowski Andrzej A Wyszogrodzki Piotr K Smolarkiewicz |
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| Institution: | (1) Department of Geological and Atmospheric Sciences, Iowa State University, 3021 Agronomy Building, Ames, IA, USA;(2) Department of Meteorology, Federal University of Technology, Akure, Nigeria;(3) Teraflux Corporation, Boca Raton, FL, USA; |
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| Abstract: | This paper highlights progress with the development of a petascale implementation of general-purpose high-resolution (nonoscillatory)
hydrodynamical simulation code EULAG Prusa et al. 2008, Comput. Fluids
37, 1193]. The applications addressed are anelastic atmospheric flows in the range of scales from micro to planetary. The new
modeldomain decomposition into a three dimensional processor array has been implemented to increase model performance and
scalability. The performance of the new code is demonstrated on the IBM BlueGene/L and Cray XT4/XT5 supercomputers. The results
show significant improvement of the model efficacy compared to the original decomposition into a two-dimensional processor
array in the horizontal — a standard in meteorological models. |
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