Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..339i&link_type=abstract
Publications of the Astronomical Society of Japan, v.45, p.339-347.
Astronomy and Astrophysics
Astronomy
21
Many-Body System, Simulation, Special-Purpose Computer, Stellar Dynamics
Scientific paper
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.
Ebisuzaki Toshikazu
Fukushige Toshiyuki
Ito Tomoyoshi
Makino Junichiro
Okumura Sachiko. K.
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