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Grape-4: A Teraflops Machine for N-Body Simulations

Published online by Cambridge University Press:  25 May 2016

Makoto Taiji,
Junichiro Makino,
Toshiyuki Fukushige,
Toshikazu Ebisuzaki and
Daiichiro Sugimoto
Makoto Taiji
Affiliation:
Department of Earth Science and Astronomy
Junichiro Makino
Affiliation:
†Department of Graphics and Information Science, College of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro, Tokyo 153, Japan, Internet : taiji@chianti.c.u-tokyo.ac.jp
Toshiyuki Fukushige
Affiliation:
Department of Earth Science and Astronomy
Toshikazu Ebisuzaki
Affiliation:
Department of Earth Science and Astronomy
Daiichiro Sugimoto
Affiliation:
Department of Earth Science and Astronomy

Abstract

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We have developed a massively parallel special-purpose computer system for N-body simulations, GRAPE-4 (GRAvity-PipE 4). The GRAPE-4 system is designed for high-accuracy simulations of dense stellar systems. The GRAPE-4 calculates gravitational forces, their derivatives in time and potential energies. It has a hardware for prediction of positions and velocities, which is used for the individual timestep scheme. Using multi-chip module technology, we integrated 1692 chips of 640 megaflops performance. The peak speed of GRAPE-4 is 1.08 teraflops.

Information

Type
Large N-body Simulation
Information
Symposium - International Astronomical Union , Volume 174: Dynamical Evolution of Stars Clusters , 1996, pp. 141 - 150
Copyright
Copyright © Kluwer 1996 

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