Laptop Battery A
Japanese laboratory has built
the world's fastest computer, a machine so powerful that it
matches the raw processing power of the 20 fastest American
computers combined. The accomplishment is also a vivid statement
of contrasting scientific and technology priorities in the
United States and Japan. The Japanese machine was built to
analyze climate change, including global warming, as well as
weather and earthquake patterns. By contrast, the United States
has predominantly focused its efforts on building powerful
computers for simulating weapons, while its efforts have lagged
in scientific areas like climate modeling.
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Thinkpad SAN FRANCISCO A Japanese laboratory has built the world's
fastest computer, a machine so powerful that it matches the raw
processing power of the 20 fastest American computers combined and
far outstrips the previous leader, an I.B.M.-built machine.
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Microsoft The achievement, which was reported today by an American
scientist who tracks the performance of the world's most powerful
computers, is evidence that a technology race that most American
engineers thought they were winning handily is far from over.
American companies have built the fastest computers for most of the
last
decade.
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Laptop Computers The accomplishment is also a vivid statement of contrasting
scientific and technology priorities in the United States and
Japan. The Japanese machine was built to analyze climate change,
including global warming, as well as weather and earthquake
patterns. By contrast, the United States has predominantly focused
its efforts on building powerful computers for simulating weapons,
while its efforts have lagged in scientific areas like climate
modeling.
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Laptop Computer For some American computer scientists, the arrival of the
Japanese supercomputer evokes the type of alarm raised by the
Soviet Union's Sputnik satellite in 1957.
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Desktop Computer "In some sense we have a Computenik on our hands," said Jack
Dongarra, a University of Tennessee computer scientist who reported
the achievement today. For many years he has maintained an
authoritative list of the world's 500 fastest computers.
Notebooks Several United States computer scientists said the Japanese
machine reflected
differences in style and
commitment that suggest that United States research and spending
efforts have grown complacent in recent years. For now, the new
computer will be used only for climate research, and American
scientists have already begun preparing to move some of their
climate simulation research to run on the Japanese machine.
Lenovo "The Japanese clearly have a level of will that we haven't
achieved," said Thomas Sterling, a supercomputer designer at the
California Institute of Technology. "These guys are blowing us out
of the water, and we need to sit up and take notice."
Hard Drive The new Japanese supercomputer will have both scientific and
practical applications. It will be used for advanced modeling of
theories about global warming and climate change, and it will be
able to predict short-term weather patterns.
Travelstar Advances in computer speed today routinely extend computer
simulation into all areas of science and engineering as complex
calculations take an increasingly shorter time. Because increases
in computing power tend to have exponential results, a problem that
could take years for even the fastest computers today might be
finished in hours on the new Japanese computer.
Gateway The ability to track the path of a typhoon, for example, is of
immediate relevance to the island nation of Japan. Improved
prediction made possible by a more powerful computer might save
lives and property.
Laptop Parts Computer simulation has become a standard tool in both science
and modern design of products ranging from drugs to bicycles.
Computers that are more powerful make possible simulations that are
more accurate and can reduce cost and increase efficiency. At one
time, for example, computers were capable of computing the flow of
air over a single airplane wing but can now cover the entire
aircraft.
Software The new Japanese supercomputer was financed by the Japanese
government and has been installed at the Earth Simulator Research
and Development Center in Yokohama, west of Tokyo. The Japanese
government spent $350 million to $400 million developing the system
over the last five years, according to Dr. Akira Sekino, president
and chief executive of HNSX Supercomputers, a unit of the NEC
Corporation based in Littleton, Colo.
Hard Drives The new computer was formally dedicated last month, and the
Japan Marine Science and Technology Center said yesterday that the
machine had reached more than 87 percent of its theoretical peak
speed.
Electronics "This is a huge achievement for the Japanese," Dr. Sekino
said.
Canon NEC sells a scaled-down version of the new supercomputer.
Several United States universities and government agencies have
tried to buy the machines over the last decade for purposes like
aircraft simulation, seismic studies and molecular modeling. But
sales have been thwarted by resistance from the Commerce Department
and members of Congress, who complained that NEC was "dumping" the
machines, or selling them below cost. Last year Cray Inc., a United
States maker of supercomputers, entered into a marketing agreement
to sell the machines in the United States, but no sales have been
announced.
Desktop Pc The NEC supercomputers are based on vector processing, a way of
using specialized hardware to solve complex calculations that was
pioneered by the American supercomputer designer Seymour Cray. The
concept has generally fallen out of favor in the United States in
recent years.
Desktop Computers Assembled from 640 specialized nodes that are in turn composed
of 5,104 processors made by NEC, the new Japanese supercomputer
occupies the space of four tennis courts and has achieved a
computing speed of 35.6 trillion mathematical operations a second.
The processors are linked in a way that allows extremely efficient
operation compared with the previously fastest "massively parallel"
computers, which are based on standard parts rather than
custom-made chips.
Think Pad The earth simulator project is intended to create a "virtual
earth" on an NEC supercomputer to show what the world will look
like under various climate conditions by means of advanced
numerical simulation. The system is intended to serve as a research
platform for international teams of researchers, and United States
scientists are planning to participate in new projects made
possible by the more powerful computer.
Repair By comparison, the fastest American supercomputer, which until
now held the world computing speed record, is the ASCI White
Pacific computer at the Lawrence Livermore National Laboratory in
California. Based on I.B.M. processors, it has achieved a top speed
of 7 trillion math operations a second.
Data Recovery Faster machines are being designed at government-financed labs
in Livermore, Pittsburgh and Los Alamos, N.M., but they are far
from operational.
Cisco The Japanese supercomputer underscores a continuing debate
within the computer design community. One camp has argued for
building massively parallel supercomputers by chaining together
thousands of off-the-shelf microprocessors. That philosophy has
come to dominate designs in the United States in recent years. A
second camp has pushed for computers made from specialized
processors dedicated to solving a particular class of problem.
Keyboard The vector processors used in the Japanese machine are an
example of the second approach, and they have long been used with
great success for scientific problems ranging from weather
prediction to bomb design.
Monitor Scientists from the National Center for Atmospheric Research in
Boulder, Colo., said they were planning to work with the Japanese
earth simulation center to convert United States weather modeling
codes to work with the new computer.
Desktop "It's potentially quite significant for climate studies," said
Dr. Tim Kalleen, a space scientist who is director of the American
climate research center. He said his researchers were discussing
with their Japanese counterparts the technical details needed to
make sure the advanced American programs will run on the Japanese
machine.
Infosys By John Markoff
New York Times - 4/20/2002
Topic: Climate Change
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