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 language | English |
|---|---|
| Article number | 012072 |
| Journal | Journal of Physics: Conference Series |
| Volume | 454 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2013 |
| Externally published | Yes |
| Event | 24th IUPAP Conference on Computational Physics, IUPAP-CCP 2012 - Kobe, Japan Duration: Oct 14 2012 → Oct 18 2012 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Challenge toward the prediction of typhoon behaviour and down pour. / Takahashi, K.; Onishi, R.; Baba, Y.; Kida, Shinichiro; Matsuda, K.; Goto, K.; Fuchigami, H.
In: Journal of Physics: Conference Series, Vol. 454, No. 1, 012072, 01.01.2013.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Challenge toward the prediction of typhoon behaviour and down pour
AU - Takahashi, K.
AU - Onishi, R.
AU - Baba, Y.
AU - Kida, Shinichiro
AU - Matsuda, K.
AU - Goto, K.
AU - Fuchigami, H.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84885631603&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84885631603&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/454/1/012072
DO - 10.1088/1742-6596/454/1/012072
M3 - Conference article
AN - SCOPUS:84885631603
VL - 454
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012072
ER -