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Fujitsu Announces Start of Operations for Japan's Fastest Supercomputer

Supercomputer is operated by JCAHPC, which is a jointly run by the University of Tokyo and the University of Tsukuba

Fujitsu Limited

Tokyo, December 01, 2016

Fujitsu today announced the completion of the Oakforest-PACS supercomputer at the Joint Center for Advanced High Performance Computing (JCAHPC), which is jointly run by the University of Tokyo and the University of Tsukuba, and that operations have commenced today.

This new supercomputer is comprised of FUJITSU Server PRIMERGY CX600 M1 x86 servers. It uses Intel® Xeon Phi™ processors in its 8,208 computation nodes, achieving a total theoretical computational performance of 25 petaflops(1). Using performance tuning technologies from Fujitsu and Fujitsu Laboratories Ltd. aimed at large-scale, high performance computing to draw out the maximum system performance, the system achieved 13.55 petaflops on the LINPACK(2) benchmark used to show supercomputer performance on the TOP500 rankings, placing it first in Japan and sixth in the world. It also achieved 385.5 teraflops(3) on the HPCG (High Performance Conjugate Gradient) benchmark(4), which is known to be a performance indicator closer to actual application performance, placing it third in the world.

Fujitsu will be supporting Oakforest-PACS, which will contribute to the development of science and technology across all of Japan on the basis of Japan's first joint operation by two universities.

Under the operation of JCAHPC, Oakforest-PACS will not only promote research and development in a variety of next-generation science and technology fields, but will also contribute to human resource development in the computational science and high performance computing fields, which will play key roles in the future. Fujitsu is involved in the two universities' activities, providing total support for various research, development, and analysis operations, through its broad product lineup, strong service structure, and experience accumulated over 40 years of high performance computing.

Fujitsu will continue to work on developing the world's top-level supercomputers, providing even faster and higher performance systems.

Oakforest-PACS Specifications

Oakforest-PACS Specifications
Computational Nodes Number of nodes 8,208 nodes
Peak performance 25 petaflops
Total main memory capacity 897TB
Interconnect Intel® Omni-Path
File Cache System Capacity 940TB
Performance 1,560GB/sec
Parallel File System Capacity 26.2PB(RAID6)
Performance 500GB/sec

*Stated capacity for File Cache System and Parallel File System are calculated at one petabyte = 1015 bytes, one terabyte = 1012 bytes; and one gigabyte = 109 bytes.

Related Links

"Fujitsu Receives Order for New Supercomputer System" (press release dated May 5, 2016)

"JCAHPC's Oakforest-PACS Certified by Top500 as Japan's Highest Performance Supercomputer" (press release dated November 15, 2016)

FUJITSU Server PRIMERGY


  • [1] Petaflops

    Short for peta floating point operations per second. Peta is an SI prefix indicating one quadrillion, or 1015, so this indicates one quadrillion floating point operations per second.

  • [2] LINPACK

    A program developed by J. Dongarra, Ph.D., of the University of Tennessee, for solving a system of linear equations using matrix computation. It is the benchmark program used to create the TOP500 list, which ranks the performance of the world's supercomputers.

  • [3] Teraflops

    Short for tera floating point operations per second. Tera is an SI prefix indicating one billion, or 1012, so this indicates one billion floating point operations per second.

  • [4] HPCG (High Performance Conjugate Gradient) benchmark

    An international ranking of processing speed with the conjugate gradient method used in industry and other actual applications.

About Fujitsu

Fujitsu is the leading Japanese information and communication technology (ICT) company, offering a full range of technology products, solutions, and services. Approximately 156,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.7 trillion yen (US$41 billion) for the fiscal year ended March 31, 2016. For more information, please see http://www.fujitsu.com.

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All company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information provided in this press release is accurate at time of publication and is subject to change without advance notice.

Date: 01 December, 2016
City: Tokyo
Company: Fujitsu Limited