A 26.58 Tflops Global Atmospheric Simulation with the Spectral Transform Method on the Earth Simulator

Author

Shingu, Satoru ; Takahara, Hiroshi ; Fuchigami, JHiromitsu ; Yamada, Masayuki ; Tsuda, Yoshinori ; Ohfuchi, Wataru ; Sasaki, Yuji ; Kobayashi, Kazuo ; Hagiwara, Takashi ; Habata, Shin-ichi ; Yokokawa, Mitsuo ; Itoh, Hiroyuki ; Otsuka, Kiyoshi

Author_Institution

Japan Marine Science and Technology Center

fYear

2002

fDate

16-22 Nov. 2002

Firstpage

52

Lastpage

52

Abstract

A spectral atmospheric general circulation model called AFES (AGCM for Earth Simulator) was developed and optimized for the architecture of the Earth Simulator (ES). The ES is a massively parallel vector supercomputer that consists of 640 processor nodes interconnected by a single stage crossbar network with its total peak performance of 40.96 Tflops was achieved for a high resolution simulation (T1279L96) with AFES by utilizing the full 640-node configuration of the ES. The resulting computing efficiency is 64.9% of the peak performance, well surpassing that of conventional weather/climate applications having just 25-50% efficiency even on vector parallel computers. This remarkable performance proves the effectiveness of the ES as a viable means for practical applications.

Keywords

Application software; Atmospheric modeling; Computational modeling; Concurrent computing; Earth; Geoscience; High performance computing; Marine technology; National electric code; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Supercomputing, ACM/IEEE 2002 Conference

ISSN

1063-9535

Print_ISBN

0-7695-1524-X

Type

conf

DOI

10.1109/SC.2002.10053

Filename

1592888