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GRAPE-4: a teraFLOPS massively parallel special-purpose computer system for astrophysical N-body simulations

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4 Author(s)
Taiji, Makoto ; Dept. of Earth Sci. & Astron., Tokyo Univ., Japan ; Makino, J. ; Ebisuzaki, Toshikazu ; Sugimoto, D.

We are developing a massively parallel special-purpose computer system for astrophysical N-body simulations, GRAPE-4 (Gravity-Pipe 4). The GRAPE-4 system is designed to simulate dynamics of classical particles which interact each other gravitationally by using predictor-corrector methods. We have developed two application-specific LSIs, the HARP (Hermite Accelerator Pipe) chip and the PROMETHEUS chip for the GRAPE-4 system. The HARP chip calculates gravitational forces and its performance exceeds 600 megaFLOPS. The PROMETHEUS chip calculates predictors for the time-integration. Using multi-chip module technology, we can integrate 1920 HARP chips into a single system. The GRAPE-4 system consists of 4 clusters, which are connected to a single host workstation. The peak speed of GRAPE-4 will exceed 1 teraFLOPS even in the worst case, and will reach around 1.8 tetraFLOPS in the typical case

Published in:

Parallel Processing Symposium, 1994. Proceedings., Eighth International

Date of Conference:

26-29 Apr 1994

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