Three Opteron clusters for Japanese universities
The Japanese universities of Tsukuba, Tokyo and Kyoto formed the T2K consortium several years ago and formulated an "Open Supercomputer" specification setting down a range of basic requirements for HPC clusters. Their three systems, which have been optimized for different tasks, are now going into service.
The T2K specifications describe cluster nodes built from the very latest x86-/x64 components and linked together using a fast standard interconnect such as Infiniband or MyriNet. Open source tools and operating systems, such as Linux, are being used.
All three supercomputers use cluster nodes, each of which contains four AMD Quad Opterons. The computers were provided by different suppliers. The system at Tsukuba University, which is expected to achieve a computing performance of approximately 95 TFLOPs, was built by Cray Japan and Sumisho Computer Systems. US company Appro, manufacturers of the Appro Xtreme-X2 supercomputer, supplied the cluster nodes.
The Tokyo University cluster comprises 952 node computers from Hitachi – HA8000-tc/RS425 – in a 2U rack and is expected to reach approximately 140 TFLOPS. Fujitsu won the contract for the 61-TFLOPS cluster at Kyoto University, which contains 416 HX600 servers, also in 2U format. The system also includes a cluster of SPARC 64 machines.