The DEGIMA (DEstination for Gpu Intensive MAchine) is a high performance
computer cluster
A computer cluster is a set of computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters have each node set to perform the same task, controlled and scheduled by software.
The comp ...
used for hierarchical
N-body simulations at the Nagasaki Advanced Computing Center,
Nagasaki University.
The system consists of a 144-node cluster of PCs connected via an
InfiniBand interconnect. 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. Each graphics card has two GT200 GPU chips. As a whole, the system has 144
CPUs and 576
GPUs. It runs astrophysical
N-body simulations with over 3,000,000,000 particles using the Multiple-Walk parallel treecode. 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. The overall cost of the hardware was approximately US$500,000.
[Hamada T., Nitadori K. (2010) 190 TFlops astrophysical N-body simulation on a cluster of GPUs. In ''Proceedings of the 2010 ACM/IEEE International Conference for High Performance Computing, Networking, Storage and Analysis'' (SC '10). IEEE Computer Society, Washington, DC, USA, 1-9. ]
The name of the system is also derived from the name of a small artificial island called "
Dejima
, in the 17th century also called Tsukishima ( 築島, "built island"), was an artificial island off Nagasaki, Japan that served as a trading post for the Portuguese (1570–1639) and subsequently the Dutch (1641–1854). For 220 years, i ...
" in
Nagasaki.
See also
*
Supercomputing in Japan
*
Beowulf cluster
A Beowulf cluster is a computer cluster of what are normally identical, commodity-grade computers networked into a small local area network with libraries and programs installed which allow processing to be shared among them. The result is a hig ...
References
X86 supercomputers
MSI supercomputers
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