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2014 20th IEEE International Conference on Parallel and Distributed Systems (ICPADS) (2014)
Hsinchu, Taiwan
Dec. 16, 2014 to Dec. 19, 2014
ISBN: 978-1-4799-7615-7
pp: 360-367
Toshio Endo , Global Science Information and Computing Center, Tokyo Institute of Technology, Japan
Akira Nukada , Global Science Information and Computing Center, Tokyo Institute of Technology, Japan
Satoshi Matsuoka , Global Science Information and Computing Center, Tokyo Institute of Technology, Japan
ABSTRACT
Modern supercomputer performance is principally limited by power. TSUBAME-KFC is a state-of-the-art prototype for our next-generation TSUBAME3.0 supercomputer and towards future exascale. In collaboration with Green Revolution Cooling and others, TSUBAME-KFC submerges compute nodes configured with extremely high processor/component density, into non-toxic, low viscosity oil with high 260 Celsius flash point, and cooled using ambient / evaporative cooling tower. This minimizes cooling power while all semiconductor components kept at low temperature to lower leakage current. Numerous off-line in addition to on-line power and temperature sensors are facilitated throughout and constantly monitored to immediately observe the effect of voltage/frequency control. As a result, TSUBAME-KFC achieved world No.1 on the Green500 in Nov. 2013 and Jun. 2014, by over 20% c.f. the nearest competitors.
INDEX TERMS
Cooling, Power measurement, Supercomputers, Servers, Temperature measurement, Temperature sensors
CITATION

T. Endo, A. Nukada and S. Matsuoka, "TSUBAME-KFC: A modern liquid submersion cooling prototype towards exascale becoming the greenest supercomputer in the world," 2014 20th IEEE International Conference on Parallel and Distributed Systems (ICPADS), Hsinchu, Taiwan, 2014, pp. 360-367.
doi:10.1109/PADSW.2014.7097829
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