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发帖数: 10330 | 1 http://www.top500.org/blog/lists/2013/11/press-release/
China’s Tianhe-2 Supercomputer Maintains Top Spot on 42nd TOP500 List
2013-11-18 08:29:48+00:00
MANNHEIM, Germany; BERKELEY, Calif.; and KNOXVILLE, Tenn.—Tianhe-2, a
supercomputer developed by China’s National University of Defense
Technology, retained its position as the world’s No. 1 system with a
performance of 33.86 petaflop/s (quadrillions of calculations per second) on
the Linpack benchmark, according to the 42nd edition of the twice-yearly
TOP500 list of the world’s most powerful supercomputers. The list was
announced Nov. 18 at the SC13 conference in Denver, Colo.
Titan, a Cray XK7 system installed at the Department of Energy’s (DOE) Oak
Ridge National Laboratory, remains the No. 2 system. It achieved 17.59 Pflop
/s on the Linpack benchmark. Titan is one of the most energy efficient
systems on the list consuming a total of 8.21 MW and delivering 2.143
gigaflops/W.
Sequoia, an IBM BlueGene/Q system installed at DOE’s Lawrence Livermore
National Laboratory, is again the No. 3 system. It was first delivered in
2011 and achieved 17.17 Plop/s on the Linpack benchmark.
Fujitsu’s K computer installed at the RIKEN Advanced Institute for
Computational Science (AICS) in Kobe, Japan, is the No. 4 system with 10.51
Pflop/s on the Linpack benchmark.
Mira, a BlueGene/Q system installed at DOE’s Argonne National Laboratory,
is No. 5 with 8.59 Plop/s on the Linpack benchmark.
The new entry in the TOP10 is at No. 6 –Piz Daint, a Cray XC30 system
installed at the Swiss National Supercomputing Centre (CSCS) in Lugano,
Switzerland and now the most powerful system in Europe. Piz Daint achieved 6
.27 Pflop/s on the Linpack benchmark. Piz Daint is also the most energy
efficient system in the TOP10 consuming a total of 2.33 MW and delivering 2.
7 Gflops/W.
Rounding out the TOP10 are Stampede at the Texas Advanced Computing Center
of the University of Texas, Austin, which slipped to No. 7; a BlueGene/Q
system called JUQEEN installed at the Forschungszentrum Juelich in Germany
is No. 8; No. 9 is taken by Vulcan, another IBM BlueGene/Q system at
Lawrence Livermore National Laboratory; and No. 10 is the third system in
Europe, the SuperMUC, installed at Leibniz Rechenzentrum in Germany.
The total combined performance of all 500 systems on the list is 250 Pflop/s
. Half of the total performance is achieved by the top 17 systems on the
list, with the other half of total performance spread among the remaining
483 systems.
Other highlights from the November 2013 TOP500 List, which can be found at
www.top500.org, include:
In all, there are 31 systems with performance greater than a petaflop/s on
the list, an increase of five compared to the June 2013 list.
The No. 1 system, Tianhe-2, and the No. 7 system, Stampede, are using Intel
Xeon Phi processors to speed up their computational rate. The No. 2 system
Titan and the No. 6 system Piz Daint are using NVIDIA GPUs to accelerate
computation.
A total of 53 systems on the list are using accelerator/co-processor
technology, unchanged from June 2013. Thirty-eight (38) of these use NVIDIA
chips, two use ATI Radeon, and there are now 13 systems with Intel MIC
technology (Xeon Phi).
Intel continues to provide the processors for the largest share (82.4
percent) of TOP500 systems.
Ninety-four percent of the systems use processors with six or more cores and
75 percent have processors with eight or more cores.
The number of systems installed in China has now stabilized at 63, compared
with 65 on the last list. China occupies the No. 2 position as a user of
HPC, behind the U.S. but ahead of Japan, UK, France, and Germany. Due to
Tianhe-2, China this year also took the No. 2 position in the performance
share, topping Japan.
The last system on the newest list was listed at position 363 in the
previous TOP500.
Geographical observations
The U.S. is clearly the leading consumer of HPC systems with 265 of the 500
systems (253 last time). The European share (102 systems compared to 112
last time) is still lower than the Asian share (115 systems, down from 118
last time).
Dominant countries in Asia are China with 63 systems (down from 65) and
Japan with 28 systems (down from 30).
In Europe, UK, France, and Germany, are almost equal with 23, 22, and 20
respectively.
About the TOP500 List
天河二号蝉联全球最快超算 或可再领先一年
人民日报
2013-11-19
据新华社华盛顿11月18日电 (记者林小春)国际TOP500组织18日公布了最新全球超
级计算机500强排行榜榜单，中国国防科学技术大学研制的“天河二号”以比第二名—
—美国的“泰坦”快近一倍的速度再度登上榜首。美国专家预测，在一年时间内，“天
河二号”还会是全球最快的超级计算机。
TOP500榜单每半年发布一次。在今年6月的排行榜上，“天河二号”以每秒33.86千
万亿次的浮点运算速度首次夺冠。让国际专家印象深刻的是，它不仅运算速度快，而且
整个系统大多是中国自主研发。
当谈到中国发展超级计算机的主要挑战时，排行榜主要编撰人之一、美国田纳西大
学计算机学教授杰克·唐加拉说，中国现在要做的是开发自主的芯片技术，“这样整个
计算机都将是用中国的零部件制造”。
从整个榜单来看，美国进入前500强的超级计算机从上次的253个增至本次的265个
，优势更加明显。中国大陆则从65个降至63个，但仍占据第二名。日本以28个位列第三
。英国、法国和德国分别以23个、22个和20个位列第四至第六。
超级计算机是国家科研的重要基础工具，在地质、气象、石油勘探等领域的研究中
发挥关键作用，也是汽车、航空、化工、制药等行业的重要科研工具。 | w********g
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