MDGRAPE-3 is an ultra-high performance petascale supercomputer system developed by the RIKEN research institute in Japan. It is a special purpose system built for molecular dynamics simulations, especially protein structure prediction.[1]
MDGRAPE-3 consists of 201 units of 24 custom MDGRAPE-3 chips (4808 total), plus additional dual-core Intel Xeon processors (codename "Dempsey") which serve as host machines.
In June 2006 RIKEN announced its completion,[2] achieving the PetaFLOPS level of floating point arithmetic performance.[2] This was more than three times faster than the 2006 version of the IBM Blue Gene/L system, which then led the TOP500 list of supercomputers at 0.28 PetaFLOPS. Because it's not a general-purpose machine capable of running the LINPACK benchmark, MDGRAPE-3 does not qualify for the TOP500 list.
RIKEN (理研) is a large research institute in Japan. Founded in 1917, it now has approximately 3000 scientists on seven campuses across Japan, the main one in Wako, just outside Tokyo. RIKEN is an Independent Administrative Institution whose formal name in Japanese is Rikagaku Kenkyūsho (理化学研究所).
RIKEN conducts research in many areas of science, including physics, chemistry, biology, medical science, engineering, high performance computing and computational science, and ranging from basic research to practical applications. It is almost entirely funded by the Japanese government, and its annual budget is approximately ¥88 billion (US$760 million).
In 1913 the well-known scientist Jokichi Takamine first proposed the establishment of a national science research institute in Japan. This task was taken on by Viscount Shibusawa Eiichi, a prominent businessman, and following a resolution by the Diet in 1915, RIKEN came into existence in March 1917. In its first incarnation, RIKEN was a private foundation (zaidan), funded by a combination of industry, the government, and the Imperial Household. It was located in the Komagome district of Tokyo, and its first Director was the mathematician Baron Dairoku Kikuchi.