"This is a very important step for Cray Inc. HyperTransport technology and Opteron processors
connected via a Cray low-latency, high-bandwidth, three-dimensional torus
interconnect network.

Finnish Meteorological Institute Selects SGI Technology for National Weather Forecasting and International Climate Research

"The Altix is a very special kind of machine because you can combine and
scale it to a very large number of CPUs, but you can also segment it into
separate, independent units.

About Atea
Atea is the Nordic countries' leading provider of advice, sales,
distribution and integration services for IT products. Through Atea Value Chain, Atea offers an
end-to-end concept for IT product supply.

geophysics considerations

9 trillion calculations per second (teraflops)."

CSCS and Cray will establish a joint collaboration program aimed at
enhancing and optimizing existing scientific applications for the Cray XT3
system, as well as creating innovative new software for the new
supercomputer. The Cray XT3 system delivers a
much higher percentage of peak performance in practice than HPC clusters
and other alternatives.

About Cray Inc.

Go to www. The benchmarks we ran for our
operational code were completely superior to any of the competitors. Headquartered in Helsinki, Finland, Atea can be found on
the Web at http://www.

climate predicting

The Swiss National
Supercomputing Center (CSCS) will be the first organization in Europe to
make Cray Inc. The Cray XT3 supercomputer's Red Storm design -- purpose-built
for high performance computing (HPC) applications -- sets new standards for
systems based on standard microprocessors.2 terabytes of memory, a
28-terabyte global high-performance parallel file system based on Lustre,
and peak bisection bandwidth of 14.
Building on years of experience in designing, developing, marketing and
servicing the world's most advanced supercomputers, Cray offers a
comprehensive portfolio of HPC systems that deliver unrivaled sustained
performance on a wide range of applications. This segmentation can be changed on the fly, allocating all the
processors to one job or making a number of different configurations."
The main objective of the FMI is to provide the best possible information
about the atmosphere above and around Finland, and to ensure public safety
relating to atmospheric and airborne hazards.com.

Media Contact
Marla Robinson
256-773-2371
marlar@sgi.

etc science

There are certain
factors that could cause Cray's execution plans to differ materially from
those anticipated by the statements above. At FMI, half of the new SGI Altix system will
be dedicated to more highly defined climate modeling and research for national
and international atmospheric efforts, especially for monitoring the
greenhouse effect and global warming; the remaining half is designed to
provide much more detailed and improved short-term weather forecasting from
combined observational and satellite data. Johan Silen, IT Director, Finnish Meteorological
Institute. Smaller models can be
run on the smaller configuration while high-resolution regional modeling
codes, used by international organizations, will run on the larger group of
256 CPUs. FMI is also active in European
research and development programs in the fields of atmospheric sciences,
environment , marine sciences, energy, dispersion and transport and Arctic
monitoring through more than 100 individual projects. SGI's vision is to
provide technology that enables the most significant scientific and creative
breakthroughs of the 21st century.
Linux is a registered trademark of Linus Torvalds in several countries.

climate future

Problems
that once would have taken months to complete will now take hours or
minutes. The parties will work together to
port and optimize the CSCS and PSI scientific applications to the Cray XT3
system. "Cray has developed a strong partnership in
our relationship with CSCS and PSI, and we believe that our collaboration
will speed the adoption and excitement around Cray supercomputers not only
in Europe, but worldwide.

About CSCS

CSCS (Centro Svizzero di Calcolo Scientifico) is the Swiss National
Supercomputing Center, providing, developing and promoting technical and
scientific services for the Swiss research community in the fields of
high-performance and high-throughput computing.

Safe Harbor Statement

This press release contains forward -looking statements. Further, it
was one of the requirements that the Altix perform higher resolution
calculations at a factor of 36, for the HIRLAM (High Resolution Limited Area
Model), which is used to improve the reliability of one to two day regional
forecasts, and the Altix platform has already proven it can do that quite
well.com

Milva Naguib
SGI EMEA
+39 025756118
milvan@sgi.

future etc

This powerful new supercomputer
will also make CSCS an attractive partner for high-value, high-profile
collaborations within Europe and beyond," said CSCS General Manager
Marie-Christine Sawley.

According to PSI's Andreas Adelmann, who initiated the Horizon project ,
"This new state-of-the-art scientific instrument will allow us to simulate
complex problems that were only recently considered intractable.1 terabytes per second."
Another reason FMI chose the SGI Altix is the flexibility of the system. "The essential thing the
Altix will allow us to do is double the resolution of our weather codes which
means we double the accuracy of our predictions . And when you double
resolution, the calculation burden is a factor of 16 or larger.

SILICON GRAPHICS | The Source of Innovation and Discovery(TM)
SGI, also known as Silicon Graphics, Inc .

u science

sgi.

Predictions of the future based on science: astrophysics, geophysics, mathematical calculations , etc.

geophysics science

supercomputing sites
that also operate large-scale Cray XT3 systems, including Sandia National
Laboratories -- which co-developed the system's innovative "Red Storm"
architecture with Cray -- Pittsburgh Supercomputing Center, and Oak Ridge
National Laboratory. The sites will share information on using the new
Cray XT3 system to best advantage.

The Cray XT3 system is Cray's third-generation MPP product that
significantly advances the achievements of the Cray T3D and Cray
T3E supercomputers , still widely considered the gold standard for MPP
systems.cray.

Cray is a registered trademark , and Cray T3D, Cray T3E and Cray XT3 are
trademarks, of Cray Inc.
A long-time SGI and Atea customer, FMI, with 550 employees, wanted to
replace older computers with the Altix system running the Linux(R) OS, as well
as to easily port complex mathematical codes representing higher definition
climate models.atea. With offices
worldwide, the company is headquartered in Mountain View, Calif ., and can be
found on the Web at http://www.

climate predictions

PRESS RELEASE Red Storm Over Switzerland: CSCS Will Be First in Europe to Make New Cray XT3 System Available for Science

For a discussion of these and other
risks, see "Factors That Could Affect Future Results" in Cray's Annual
Report on Form 10 -K filed with the SEC on April 1, 2005.

"The other reason we chose the SGI system is that the Itanium 2
processor is a very powerful processor. The company's business
concept is to simplify and rationalize its customers' handling of IT products
throughout their life cycle. Intel and Itanium are registered trademarks of Intel
Corporation or its subsidiaries in the United States and other countries.

considerations geophysics

In a joint initiative with Switzerland's Paul Scherrer Institut (PSI), CSCS
has ordered a Cray XT3 system with 1,100 AMD Opteron processors and
peak performance of 5. PSI
collaborates with national and international universities, other research
institutions, and industry in the areas of solid-state research and
material sciences, particle physics and astrophysics, life sciences, energy
research and environmental research. All
other trademarks mentioned herein are the property of their respective owners.

based etc

, as it will bring a large Cray
supercomputer back into the heart of the European HPC community, meeting
one of our key corporate goals of regaining leadership across Europe ," said
Cray President Peter Ungaro.

The Horizon system at CSCS will include 2., and HELSINKI , Finland, Silicon Graphics (NYSE: SGI) and Finnish IT systems
distributor Atea, an SGI(R) Channel partner, today announced that the Finnish
Meteorological Institute (FMI) has selected a SGI(R) Altix (R) high performance
computer to deliver increasingly accurate land, high-altitude and marine
weather predictions for Finland.

geophysics considerations

"Horizon will enable Swiss researchers to make important breakthroughs in
material science, environmental science, life science, astronomy,
chemistry, and other scientific fields.com for more
information., is the world's leader in
high-performance computing, visualization and storage.

predictions scientific

's (NASDAQ: CRAY) powerful new Cray XT3 massively
parallel processing (MPP) supercomputer and its innovative "Red Storm"
technology available for scientific research. As part of this program , Cray will ship a small part of the
Cray XT3 system to CSCS in April 2005.
FMI plans initially to segment the system's processors into a larger and a
smaller configuration to ensure that there is always processing power for
detailed weather predictions regardless of situation.

mathematical calculations

The Cray XT3 supercomputer uses Advanced Micro
Devices Inc. An autonomous unit of ETH
Zurich, CSCS was created in 1991 to provide leadership-class computing for
high-end science nationwide and to support breakthrough science, academic
partnerships and world-class connectivity.

As the global leader in HPC, Cray provides innovative supercomputing
systems that enable scientists and engineers in government , industry and
academia to meet both existing and future computational challenges. FMI actively
participates in European Union research programs especially on the topics of
stratospheric ozone depletion, climate and atmospheric composition changes,
wind energy, Baltic Sea pollution and urban air pollution.com ., in the United States and/or other
countries worldwide.

astrophysics u

"





Cray XT3 Supercomputer


In addition, CSCS will collaborate with leading U. All other trademarks are the property of their
respective owners.
"We chose the SGI Altix because of the computer's shared memory
architecture, which means that every processor has access to the complete
memory; this makes it a very strong general purpose machine that is easy to
port software to," said Dr. Processing power left over from our operational
needs will be used for the mathematics research, especially for climatology
modeling on the greenhouse effects," said Dr. Silen. The value chain covers everything
from analysis, advice, delivery and installation to recycling or discarding of
worn-out IT products. Whether it's sharing images to aid in brain
surgery , finding oil more efficiently, studying global climate, providing
technologies for homeland security and defense or enabling the transition from
analog to digital broadcasting, SGI is dedicated to addressing the next class
of challenges for scientific, engineering and creative users.

scientific science

When
the new system , nicknamed "Horizon," begins operating in mid-2005, it will
be one of Europe's most powerful supercomputers and will boost CSCS'
computing capability more than five-fold.S.

About the Paul Scherrer Institute

The Paul Scherrer Institute (PSI), located in Villigen, Switzerland, is a
multi-disciplinary research centre for natural sciences and technology. These include the technical
challenges of developing high performance computing systems including
stable system software, government support and timing of supercomputer
system purchases, the successful porting of application programs to Cray
computer systems, the successful passing of acceptance tests, reliance on
third-party suppliers, Cray's ability to keep up with rapid technological
change and Cray's ability to compete against larger, more established
companies and innovative competitors. SGI Channel Partner Atea Will Deliver and Install SGI Altix Powered by 304
Processors

MOUNTAIN VIEW, Calif.

NOTE: Silicon Graphics, SGI, Altix, the SGI cube and the SGI logo are
registered trademarks and The Source of Innovation and Discovery is a
trademark of Silicon Graphics, Inc.com

SGI PR Hotline
650-933-7777

SGI PR Facsimile
650-933-0283

predicting climate

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