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Tianhe-2 or TH-2 (, that is, "Milky Way 2") is a 33.86-petaflop supercomputer located in National Supercomputer Center in Guangzhou.〔(【引用サイトリンク】title=June 2013 )〕 It was developed by a team of 1,300 scientists and engineers. It is the world's fastest supercomputer according to the TOP500 lists for June 2013, November 2013, June 2014, November 2014, June 2015, and November 2015. Plans of the Sun Yat-sen University in collaboration with Guangzhou district and city administration to double its computing capacities were stopped by a US government rejection of Intel's application for an export license for the CPUs and coprocessor boards. ''The Wall Street Journal'' analysts considered this a blow to Intel and their suppliers sales and a drag to US information technology development, but concurrently a boost for China's own processor development and production industry.〔(【引用サイトリンク】url= http://www.top500.org/lists/2014/06/ )〕 == History == The development of Tianhe-2 was sponsored by the 863 High Technology Program, initiated by the Chinese government, the government of Guangdong province, and the government of Guangzhou city. It was built by China's National University of Defense Technology (NUDT) in collaboration with the Chinese IT firm Inspur.〔〔 Inspur manufactured the printed circuit boards and helped with the installation and testing of the system software.〔 The project was originally scheduled for completion in 2015, but was instead declared operational in June 2013. As of June 2013, the supercomputer had yet to become fully operational. It was expected to reach its full computing capabilities by the end of 2013.〔 In June 2013, Tianhe-2 topped the TOP500 list of fastest supercomputers in the world. The computer beat out second place finisher Titan by nearly a 2-to-1 margin. Titan, which is housed at the U.S. Department of Energy's Oak Ridge National Laboratory, achieved 17.59 petaflops, while Tianhe-2 achieved 33.86 petaflops. Tianhe-2's performance returned the title of the world's fastest supercomputer to China after Tianhe-I's début in November 2010. The Institute of Electrical and Electronics Engineers said Tianhe-2's win "symbolizes China's unflinching commitment to the supercomputing arms race".〔 As of June 2013, China housed 66 of the top 500 supercomputers, second only to the United States' 252 systems.〔 Graph500 list of top supercomputers.〔(【引用サイトリンク】url=http://www.graph500.org/results_jun_2013 )〕 In their benchmark, the system tested at 2,061 gigaTEPS (traversed edges per second). The top system, IBM Sequoia, tested at 15,363 gigaTEPS.〔 It also has first place in perspective HPCG test proposed by Jack Dongarra, with 0.580 HPCG PFLOPS in June 2014. Tianhe-2 has been housed at National University of Defense Technology. It is ranked number one in the list of supercomputers at the speed of 33.86 petaflops in HPL Linpack benchmark. 〔http://www.top500.org/lists/2015/06/〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tianhe-2」の詳細全文を読む スポンサード リンク
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