  Recently, special-purpose computers have surpassed general-purpose computers
in the speed with which large-scale stellar dynamics simulations can be
performed. Speeds up to a Teraflops are now available, for simulations in a
variety of fields, such as planetary formation, star cluster dynamics, galactic
nuclei, galaxy interactions, galaxy formation, large scale structure, and
gravitational lensing. Future speed increases for special-purpose computers
will be even more dramatic: a Petaflops version, tentatively named the GRAPE-6,
could be built within a few years, whereas general-purpose computers are
expected to reach this speed somewhere in the 2010-2015 time frame. Boards with
a handful of chips from such a machine could be made available to individual
astronomers. Such a board, attached to a fast workstation, will then deliver
Teraflops speeds on a desktop, around the year 2000.
