Lesson plan
DEGIMA
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. 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. The name of the system is also derived from the name of a small artificial island called "Dejima" in Nagasaki.
Article summary
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. 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. The name of the system is also derived from the name of a small artificial island called "Dejima" in Nagasaki.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.