A SPECIAL-PURPOSE COMPUTER FOR N-BODY SIMULATIONS - GRAPE-2A

被引：0
|
作者：
ITO, T
MAKINO, J
FUKUSHIGE, T
EBISUZAKI, T
OKUMURA, SK
SUGIMOTO, D
机构：
[1] UNIV TOKYO,COLL ARTS & SCI,DEPT EARTH SCI & ASTRON,MEGURO KU,TOKYO 153,JAPAN
[2] UNIV TOKYO,COLL ARTS & SCI,DEPT INFORMAT SCI & GRAPH,MEGURO KU,TOKYO 153,JAPAN
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 1993年 / 45卷 / 03期
关键词：
MANY-BODY SYSTEM; SIMULATION; SPECIAL-PURPOSE COMPUTER; STELLAR DYNAMICS;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have developed GRAPE-2A, which is a back-end processor used to accelerate simulations of gravitational N-body systems, such as stellar clusters, a proto planetary system, and the structure formation of the universe. GRAPE-2A calculates the forces exerted on one particle from all other particles. The host computer, which is connected to GRAPE-2A through a VME bus, performs other calculations, such as time integration. In the simulation of gravitational N-body systems, almost all of the computing time is consumed in calculating the forces between particles. GRAPE-2A performs this force calculation with a speed that is much faster than that of a general-purpose computer. GRAPE-2A can be used for cosmological N-body simulations with periodic boundary conditions using the Ewald method, and for molecular-dynamics simulations of proteins and crystals. The computational speed of GRAPE-2A is 180 Mflops.
引用
收藏
页码：339 / 347
页数：9
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