The DEGIMA (DEstination for Gpu Intensive MAchine) is a high performance computer cluster used for hierarchical N-body simulations at the Nagasaki Advanced Computing Center, Nagasaki University.
Each node is composed of 2.66 GHz Intel Core i7 920 processor, two GeForce GTX295 graphics cards, 12 GB DDR3-1333 memory and Mellanox MHES14-XTC SDR InfiniBand host adapter on MSI X58 pro-E motherboard.
It runs astrophysical N-body simulations with over 3,000,000,000 particles using the Multiple-Walk parallel treecode.
[1] The system is noted for being highly cost and energy-efficient, having a peak performance of 111 TFLOPS with an energy efficiency of 1376 MFLOPS/watt.
[2][3] The name of the system is also derived from the name of a small artificial island called "Dejima" in Nagasaki.