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CERN unveils computer grid linking 7,000 scientists
Published in Saudi Press Agency on 03 - 10 - 2008


CERN, the world's biggest particle
physics laboratory and creator of the Worldwide Web, on Friday
unveiled a new computer network allowing thousands of scientists
around the world to crunch data on its huge experiments, Reuters reported.
Some 7,000 scientists in 33 countries are now linked through
the computing network at CERN, the European Organisation for
Nuclear Research, to analyse data from its particle-smashing
test probing the nature of matter that began last month.
That experiment, which could provide clues about the origins
of the universe, began on Sept. 10 and was shut down nine days
later because of a helium leak in the 27 km (17 mile) tunnel of
CERN's Large Hadron Collider (LHC).
When it starts up again next year, physicists involved in
the experiment will have access to real-time data on their
desktops, thanks to CERN's computing grid that links more than
100,000 processors at 140 institutes around the world.
The massive distributed supercomputer was built for the LHC
project but has wide implications for the study of science, said
Ian Bird, leader of the Worldwide LHC Computing Grid project.
"Many other researchers and projects are already
benefiting," Bird said. "Grid computing is enabling all-new ways
of doing science where large data handling and analysis
capabilities are required."
The amounts of data involved in the largest scientific
experiment ever conducted are hard to comprehend.
The LHC experiment involves firing beams of protons in
opposite directions around the tunnel buried 100 meters (330
feet) below the French-Swiss border, on the outskirts of Geneva.
At full capacity the LHC will produce 600 million proton
collisions per second, producing data 40 million times per
second.
These will be filtered down in the four massive subterranean
detectors -- the largest of which is the size of a five-storey
building -- to 100 collisions of interest per second.
The data flow will be about 700 megabytes per second or 15
million gigabytes a year for 10 to 15 years -- enough to fill
three million DVDs a year or create a tower of CDs more than
twice as high as Mount Everest.
"To analyse that amount of data you require not only a lot
of computing but a new computing paradigm -- that's what we call
the Grid, and that's what we're here to celebrate today," CERN
spokesman James Gillies told a press briefing.
Just as the Worldwide Web -- invented in 1990 at CERN --
allows users to share access to information over the Internet,
computer grids allow the linking of computing resources such as
data storage capacity and processing power.
CERN has only 10 percent of the computing capacity needed
for the LHC experiment, which will allow scientists to observe
sub-atomic particles and probe the nature of gravity and matter.
The grid will provide the rest.


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