gravitySimulator is a novel supercomputer that incorporates special-purpose GRAPE hardware to solve the gravitational n-body problem.
It is housed in the Center for Computational Relativity and Gravitation (CCRG) at the Rochester Institute of Technology.
The computer consists of 32 nodes, each of which contains a GRAPE-6A board ("mini-GRAPE") in a Peripheral Component Interconnect (PCI) slot.
[1] The GRAPE boards use pipelines to compute pairwise forces between particles at a speed of 130 Gflops.
[2] gravitySimulator is used to study the dynamical evolution of galaxies and galactic nuclei.