Introduction of Power-effective supercomputer, Shobu

Ryutaro Himeno (Riken)

Shobu was installed in our center, in May, 2015. It was ranked No.1 in the GREEN500, first in June 2015 and had kept No. 1 in one year and half. Its key technologies are direct liquid cooling system using Freon and energy efficient original processor PEZY-SC (1024 cores, 1.5TFLOPs) used as accelerator in the system. These two will be presented in detail in my talk. In addition, its applications will be shown.