Challenge toward the prediction of typhoon behaviour and down pour

K. Takahashi, R. Onishi, Y. Baba, S. Kida, K. Matsuda, K. Goto, H. Fuchigami

研究成果: Conference article査読

13 被引用数 (Scopus)

抄録

Mechanisms of interactions among different scale phenomena play important roles for forecasting of weather and climate. Multi-scale Simulator for the Geoenvironment (MSSG), which deals with multi-scale multi-physics phenomena, is a coupled non-hydrostatic atmosphere-ocean model designed to be run efficiently on the Earth Simulator. We present simulation results with the world-highest 1.9km horizontal resolution for the entire globe and regional heavy rain with 1km horizontal resolution and 5m horizontal/vertical resolution for urban area simulation. To gain high performance by exploiting the system capabilities, we propose novel performance evaluation metrics introduced in previous studies that incorporate the effects of the data caching mechanism between CPU and memory. With a useful code optimization guideline based on such metrics, we demonstrate that MSSG can achieve an excellent peak performance ratio of 32.2% on the Earth Simulator with the single-core performance found to be a key to a reduced time-to-solution.

本文言語English
論文番号012072
ジャーナルJournal of Physics: Conference Series
454
1
DOI
出版ステータスPublished - 2013
外部発表はい
イベント24th IUPAP Conference on Computational Physics, IUPAP-CCP 2012 - Kobe, Japan
継続期間: 2012 10 142012 10 18

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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