Researchers Run World's Largest-Scale Fusion Energy Simulation on Cray Supercomputer

SEATTLE, WA, Jul 29 (MARKET WIRE) --
Global supercomputer leader Cray Inc. (NASDAQ: CRAY) today announced that
researchers from the University of California-Irvine (UCI) have conducted
the largest-ever fusion energy simulation on a Cray XT4(TM)
supercomputer. Codenamed "Jaguar" and housed at Oak Ridge National
Laboratory (ORNL), researchers harnessed the power of the highly scalable
Cray system to simulate electron transport for a prototype fusion reactor
developed to study the scientific and technological feasibility of fusion
energy.

"Fusion holds the promise of a revolutionary new energy source for the
world, and this important simulation has brought us one step closer to
making it a reality," said Yong Xiao, the UCI researcher who led the
unprecedented simulation of electron turbulent transport in fusion
experiments. "Advances in high performance computing are key to advancing
the science associated with identifying and developing alternative energy
sources. The Cray XT4 system provided the scale, reliability and sustained
performance required to handle the tremendous amount of data produced by
complex fusion simulations."

Researchers speculate that fusion, the power source of the stars and sun,
could provide a cleaner, more abundant energy source with far fewer
harmful emissions than fossil-fuel burning power plants and fewer problems
associated with waste than current nuclear power reactors.

"This is an important milestone and we applaud the efforts of the research
team at UCI led by Yong Xiao and Zhihong Lin and the critical resources
provided by ORNL's National Center for Computational Sciences," said Ian
Miller, senior vice president of sales and marketing at Cray. "Cray
systems are designed to tackle the most sophisticated and relevant
challenges in science and engineering. This critical achievement is the
result of the best minds in science converging with the highest innovation
and scalability in high performance computing."

About the Cray XT4 Supercomputer

Building on the success of the Cray XT3(TM) system, the Cray XT4 is a
massively parallel processor (MPP) supercomputer purpose-built to deliver
exceptional sustained application performance for challenging scientific
and engineering problems. The supercomputer's high-speed 3D torus
interconnect, advanced MPP operating system and high-speed global
input/output make it possible for users to scale applications to more than
120,000 processor cores with exceptional sustained performance. The
system's scalable processing element uses x86 64-bit AMD Opteron(TM)
processors that employ HyperTransport(TM) technology to increase
bandwidth and reduce latency. Go to www.cray.com/products/xt4/index.html
for more information.

About Cray Inc.

As a global leader in supercomputing, Cray provides highly advanced
supercomputers and world-class services and support to government,
industry and academia. Cray technology enables scientists and engineers
to achieve remarkable breakthroughs by accelerating performance,
improving efficiency and extending the capabilities of their most
demanding applications. Cray's Adaptive Supercomputing vision will result
in innovative next-generation products that integrate diverse processing
technologies into a unified architecture, allowing customers to surpass
today's limitations and meeting the market's continued demand for
realized performance. Go to www.cray.com for more information.

Cray is a registered trademark, and Cray XT4 and Cray XT3 trademarks of
Cray Inc.

Cray Media:
Erin McGhee
206/701-2107
pr@cray.com

Cray Investors:
Paul Hiemstra
206/701-2044
ir@cray.com

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