Astrophysics on the GRAPE Family of Special Purpose Computers
  The GRAPE-4, the world's fastest computer in 1995-1997, has produced some major scientific results, through a wide diversity of large-scale simulations in astrophysics. Applications have ranged from planetary formation, through the evolution of star clusters and galactic nuclei, to the formation of galaxies and clusters of galaxies. 
Piet Hut(Institute for Advanced Study), Jun Makino(University of   Tokyo)