t**********8
发帖数: 1683 | 1 中国研制出世界最快计算机 运算能力比美快一倍 2013-06-04 00:45:23
2013年06月04日09:59 来源：TechWeb.com.cn
【TechWeb报道】6月4日消息，据国外媒体报道，科技网站Computerworld从一位上周在
华访问的美国学者处获悉，中国研制出了一台具有每秒54.9千万亿次浮点运算(
Petaflops)能力的超级计算机，比美国目前任何一台超级计算机的速度都快一倍。
据悉，中国这台最新的超级计算机名为“天河-2”，配置了3.2万个多核英特尔至
强Ivy Bridge处理器芯片，4.8万个英特尔至强Phi芯片。Phi芯片是基于英特尔MIC（多
集成内核）架构的协处理器。中国政府研发投入为大约2.9亿美元。
根据去年11月发布的超级计算机500强排行榜，美国最快的超级计算机名为“Cray
”，运行速度接近每秒18千万亿次浮点计算。这个排行榜将在今年6月中旬更新。
link address: http://www.computerworld.com/s/article/9239710/China_surpassing_U.S._with_54.9_petaflop_supercomputer
China surpassing U.S. with 54.9 petaflop supercomputer
Intel-based system has China poised to take the global lead in Top500
supercomputing list this month
By Patrick Thibodeau
June 3, 2013 07:10 AM ET
16 CommentsinShare19
Computerworld - China has produced a supercomputer capable of 54.9 petaflops
, more than twice the speed of any system in the U.S., according to a U.S.
researcher who was in China last week and learned the details.
China's latest system was built with Intel chips, but includes indigenously
produced Chinese technologies as well. The Chinese government spent about $
290 million on it.
China's new supercomputer is capable of 54.9 petaflops. (Image: Prof. Jack
Dongarra)
Today, the world's fastest supercomputer is at Oak Ridge National Laboratory
in Tennessee. The Cray system was running at nearly 18 petaflops, according
to last November's biannual Top 500 list. That list will be updated in mid-
June.
With its new supercomputer, China is raising the stakes in supercomputing
for the U.S., as well as for Japan and Europe. It is showing a willingness
to push for leadership in HPC and the race to develop the next generation of
systems, exascale.
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Exascale unlikely before 2020 due to budget woes
More in Supercomputers
Jack Dongarra, a professor of computer science at the University of
Tennessee and one of the academic leaders of the Top 500 supercomputing list
, posted a detailed description late Sunday of China's latest system (
report PDF ) from his trip to China. His findings are based on a briefing at
an HPC conference May 28-29 in Changsha by a Chinese official from the
National University of Defense Technology (NUDT).
HPC Wire reported on the new system this weekend.
China's latest large system is the successor to its Tianhe-1A supercomputer,
which won the global title as the world's fastest in November 2010.
President Obama made note of China's supercomputing accomplishment in his
state of the union speech in January, 2011, where he said the U.S. was
facing another "Sputnik moment" in wide range of technologies.
China's latest supercomputer, called Tianhe-2 or Milkyway-2, has 32,000
multicore Intel Xeon Ivy Bridge chips, and 48,000 Xeon Phi chips, a co-
processor based on Intel's MIC (Many Integrated Core) architecture.
Each Phi processor is capable of more than teraflop of speed, or one
trillion floating point operations per second. A petaflop is 1,000 teraflops
, or one quadrillion floating-point operations per second. An exascale
system is 1,000 petaflops.
Dongarra's report suggests that China may have the leading system for some
time. "The next large acquisition of a supercomputer for the U.S. Department
of Energy will not be until 2015," he wrote.
China has been developing its own chip technology and has been mixing and
matching homegrown tech with imported components. U.S. researchers believe
China is heading in the direction of building a supercomputer made entirely
of indigenously produced components, including chips.
The approach of combing China-built technology with American products, is
evident in Tiahne-2.
"There are number of features of the Tianhe-2 that are Chinese in origin,
unique and interesting," said Dongarra, in his report. These include a
proprietary interconnects, and the Galaxy FT-15, a 16-core processor. He
cited the "apparent reliability and scalability" of the system as well.
The system's power usage, when cooling is considered, is 24 MWs. Power is
major issue in achieving exascale. Researchers could assemble, theoretically
, an exascale computing system with current technology. But at a billion or
so cores, it would need its own power plant to operate.
To reach exascale, HPC researchers say they need to develop processors,
memory and network components that substantially reduce power use. New
programming models are also being developed. The problems in achieving
exascale are such that Europe, which is investing heavily in its own HPC
effort, believes there is a potential to leapfrog the U.S. if breakthrough
approaches are discovered to some of these problems.
U.S. researchers, as recently as last month, warned Congress that the U.S.,
while the undisputed leader in HPC today, is at risk of falling behind in
HPC development unless it commits hundreds of millions of dollars to
exascale research. But the ongoing budget dispute and sequestration is
leading to a reduction in R&D spending.
China wants to produce an exascale system before 2020. The U.S., at its
present effort, won't produce an exascale system until around 2025,
lawmakers were told last month.
Patrick Thibodeau covers SaaS and enterprise applications, outsourcing,
government IT policies, data centers and IT workforce issues for
Computerworld. Follow Patrick on Twitter at @DCgov, or subscribe to Patrick'
s RSS feed . His email address is p********[email protected].
Read more about High Performance Computing in Computerworld's High
Performance Computing Topic Center. | t**********8
发帖数: 1683 | 2 看了看英文网站，除了techweb，没个公开报道这事情的 | d****o
发帖数: 32610 | | t**********8
发帖数: 1683 | | m********5
发帖数: 17667 | 5 关键是软件怎么样
德国摆了几台用cell搭的超算, 结果全TMD不好用, 空成摆设
【在 t**********8 的大作中提到】
: 中国研制出世界最快计算机 运算能力比美快一倍 2013-06-04 00:45:23
: 2013年06月04日09:59 来源：TechWeb.com.cn
: 【TechWeb报道】6月4日消息，据国外媒体报道，科技网站Computerworld从一位上周在
: 华访问的美国学者处获悉，中国研制出了一台具有每秒54.9千万亿次浮点运算(
: Petaflops)能力的超级计算机，比美国目前任何一台超级计算机的速度都快一倍。
: 据悉，中国这台最新的超级计算机名为“天河-2”，配置了3.2万个多核英特尔至
: 强Ivy Bridge处理器芯片，4.8万个英特尔至强Phi芯片。Phi芯片是基于英特尔MIC（多
: 集成内核）架构的协处理器。中国政府研发投入为大约2.9亿美元。
: 根据去年11月发布的超级计算机500强排行榜，美国最快的超级计算机名为“Cray
: ”，运行速度接近每秒18千万亿次浮点计算。这个排行榜将在今年6月中旬更新。
| y*h
发帖数: 25423 | 6
MIC跟GPU差不多，软件需要专门写。
【在 m********5 的大作中提到】
: 关键是软件怎么样
: 德国摆了几台用cell搭的超算, 结果全TMD不好用, 空成摆设
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