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Special-purpose computing for dense stellar systems

Published online by Cambridge University Press:  01 August 2006

Junichiro Makino
Junichiro Makino*
Affiliation:
Division of Theoretical Astophysics, National Astronomical Observatory of Japan, 2-21-1 Ohsawa, Mitaka, Tokyo 181-8588, Japan email: makino@astron.s.u-tokyo.ac.jp
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Abstract

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I'll describe the current status of the GRAPE-DR project. The GRAPE-DR is the next-generation hardware for N-body simulation. Unlike the previous GRAPE hardwares, it is programmable SIMD machine with a large number of simple processors integrated into a single chip. The GRAPE-DR chip consists of 512 simple processors and operates at the clock speed of 500 MHz, delivering the theoretical peak speed of 512/226 Gflops (single/double precision). As of August 2006, the first prototype board with the sample chip successfully passed the test we prepared. The full GRAPE-DR system will consist of 4096 chips, reaching the theoretical peak speed of 2 Pflops.

Keywords

celestial mechanicsmethods: n-body simulationsglobular clusters

References

Makino, J., & Taiji, M. 1998, Scientific Simulations with Special-Purpose Computers – The GRAPE Systems (John Wiley and Sons)Google Scholar
Sugimoto, D., Chikada, Y., Makino, J., Ito, T., Ebisuzaki, T., & Umemura, M. 1990, Nature, 345, 33CrossRefGoogle Scholar