Challenge toward the prediction of typhoon behaviour and down pour

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

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012072
JournalJournal of Physics: Conference Series
Volume454
Issue number1
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event24th IUPAP Conference on Computational Physics, IUPAP-CCP 2012 - Kobe, Japan
Duration: Oct 14 2012Oct 18 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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