FASTRUN: a special purpose, hardwired computer for molecular simulation.

We describe the design, construction, and performance of a special purpose, hardwired accelerator for molecular mechanical calculations called FASTRUN. The processor was designed at Columbia University in 1984, constructed in the Instrumentation Division of Brookhaven National Laboratory, and delivered to Columbia in final form in 1989. It was rendered functional for molecular mechanics in early 1990. Together with its host Star array processor, FASTRUN has a measured performance for molecular dynamics simulations which compares favorably with present day supercomputers. The hardware replication cost of FASTRUN is on the order of $100,000.00.