Gyoukou
 | |
| Active | operational 2017 |
|---|---|
| Location | JAMSTEC Earth Simulator Building |
| Architecture | 10,000 PEZY-SC2 processor modules (2048 processing elements per module; 20,480,000 total), 1250 Intel Xeon D host processors |
| Power | 1350 kW |
| Operating system | Linux CentOS |
| Memory | 680 TiB |
| Speed | 19.14 PFLOPS (Rmax) |
| Ranking | TOP500: 4, November 2017 |
Gyoukou (Japanese: 暁光, Hepburn: gyōkō, dawn light) is a supercomputer developed by ExaScaler and PEZY Computing.
It is deployed at Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokohama Institute for Earth Sciences, the same floor where the Earth Simulator is located.
System
Gyoukou is based on ExaScaler's ZettaScaler-2.x technology which features liquid immersion cooling system using Fluorinert.[1][2]
Each immersion tank can contain 16 Bricks. A Brick consists of a backplane board, 32 PEZY-SC2 modules, 4 Intel Xeon D host processors, and 4 InfiniBand EDR cards.[3] Modules inside a Brick are connected by hierarchical PCI Express fabric switches,[1] and the Bricks are interconnected by InfiniBands.
Each PEZY-SC2 module contains 2048 processing elements (1 GHz design), six MIPS64 control processors, and 4 DDR4 DIMMs (64GB per module as of November 2017).[4][3]
Performance
With partial configuration, Gyoukou was ranked 69th at 1,677.1 teraflops on the June 2017 TOP500 ranking.[3][5]
After upgrade to full scale (equivalent of 19.5 immersion tanks) using newer ZettaScaler-2.2 system, it ranked 4th at 19,135.8 teraflops on the November 2017 TOP500 ranking.[6] At the time of benchmarking, 1984 out of 2048 cores of each PEZY-SC2 were used at 700 MHz clock.[3]
Gyoukou has high energy efficiency, and it ranked 5th at 14.173 gigaflops/watt on the November 2017 Green500 energy efficiency ranking.[7]
Notes
- ^ a b "ZettaScaler-2.0 Configurable Liquid Immersion Cooling System" (PDF). ExaScaler. Retrieved November 23, 2017.
- ^ 液体直接浸漬冷却システムのキーマテリアルである３Ｍのフッ素系液体「TOP500」で日本製スーパーコンピュータ最高の4位を獲得した「暁光（Gyoukou）」の冷却システムに採用さらに「GREEN500」では、採用システムがトップ3を独占 (PDF) (in Japanese). 3M. November 15, 2017. Retrieved November 23, 2017.
{{cite web}}: Invalid|script-title=: missing prefix (help) - ^ a b c d スーパーコンピュータシステム「Gyoukou（暁光）」がスパコンランキングTOP500で国内1位（世界4位）・Green500で世界5位を同時に獲得 (PDF) (in Japanese). ExaScaler. November 14, 2017. Retrieved November 23, 2017.
{{cite web}}: Invalid|script-title=: missing prefix (help) - ^ PEZY-SC2モジュール&プロセッサ (in Japanese). PEZY Computing. Retrieved November 23, 2017.
{{cite web}}: Invalid|script-title=: missing prefix (help) - ^ "Top500 List - June 2017". TOP500.org. Retrieved November 23, 2017.
- ^ "Top500 List - November 2017". TOP500.org. Retrieved November 23, 2017.
- ^ "Green500 List for November 2017". TOP500.org. Retrieved November 23, 2017.
External links
