SOURCE: Cray Inc.

April 03, 2007 07:30 ET

CRAY XT4 "Jaguar" Supercomputer at ORNL Sets New Sustained Performance Mark for Meteorological Modeling

Upgraded System Enables Faster Forecasts Over Greater Areas

SEATTLE, WA -- (MARKET WIRE) -- April 3, 2007 -- Global supercomputer leader Cray Inc. (NASDAQ: CRAY) today announced that a recently upgraded Cray XT4™ supercomputer at Oak Ridge National Laboratory (ORNL) has set a new performance record for the Weather and Research Forecast (WRF) meteorological modeling software. ORNL's Cray XT4 system, nicknamed "Jaguar," ran the advanced WRF code on a total of 12,500 processors, achieving sustained performance that reached an unprecedented 7.1 teraflops (trillion floating point operations per second). At this level of performance, scientists can generate a one-day, 2.5-kilometer-resolution weather forecast covering the entire continental United States in as little as 18 minutes, compared to the several hours it would take on a less efficient system.

"The expanded Cray XT4 Jaguar supercomputer provides a world-class platform for high-impact scientific research," said John Drake, ORNL's chief computational climate scientist. "The system offers exceptional performance that allows researchers at ORNL to tackle some of the most formidable challenges in climate modeling, materials science, fusion energy and other important scientific studies."

The Jaguar system at ORNL is the largest supercomputer in the Department of Energy (DOE) Office of Science, and is the major computing resource for DOE's Innovative and Novel Computational Impact on Theory and Experiment, or INCITE, program. ORNL increased the system's computing power to 54 teraflops in mid-2006, making it one of the most powerful open scientific systems in the world.

"The Cray XT™ infrastructure is designed for upgradeability, so customers can dramatically increase the number and speed of compute operations without having to purchase a new system or change their software configurations," said Per Nyberg, Cray's Earth Sciences Segment director. "The Jaguar system at ORNL demonstrates how this scalable architecture can be leveraged to provide unprecedented levels of sustained performance for key scientific applications such as WRF. Increasing our ability to predict and prepare for extreme weather events is sure to yield important benefits for society and the world economy."

About WRF

WRF is a next-generation numerical weather prediction application employed by a large global community of users to conduct weather research and provide operational forecasting at scales ranging from meters to thousands of kilometers. The WRF code was developed as part of a collaborative partnership among the National Center for Atmospheric Research, the National Oceanic and Atmospheric Administration, the National Centers for Environmental Prediction, the Forecast Systems Laboratory, the Air Force Weather Agency, the Naval Research Laboratory, Oklahoma University and the Federal Aviation Administration. Scientists are using WRF to solve problems in the areas of regional climate modeling, hurricane forecasting, tropical convection and fundamental dynamics of the atmosphere. For example, by resolving uncertainties about the nature of convection currents in the tropics, researchers will be able to construct more accurate global models aimed at predicting weather and climate patterns in higher latitudes. Go to for more information.

About Oak Ridge National Laboratory

Located in Oak Ridge, Tennessee, ORNL is the U.S. Department of Energy's largest science and energy laboratory, with over 4,000 researchers and support staff. ORNL is an international leader in research areas that include neutron science, new energy sources, high-performance computing, biological systems, nanoscale materials science and national security. ORNL is home to the Center for Functional Genomics, the Center for Nanophase Materials Sciences and a number of other research facilities. The laboratory was selected as the site of the Office of Science's National Leadership Computing Facility, whose goal is to build the world's fastest supercomputer for unclassified research. Go to for more information.

About the Cray XT4 Supercomputer

Building on the success of the Cray XT3™ 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 from 200 to more than 30,000 processors without performance loss. The system's scalable processing element uses x86 64-bit AMD Opteron™ single- or dual-core processors that employ HyperTransport™ technology to increase bandwidth and reduce latency. Go to for more information.

About Cray Inc.

As a global leader in supercomputing, Cray provides highly advanced supercomputing systems 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 for more information.

Cray is a registered trademark, and Cray XT, Cray XT4 and Cray XT3 are trademarks, of Cray Inc. Opteron is a trademark of Advanced Micro Devices, Inc. HyperTransport is a licensed trademark of the HyperTransport Technology Consortium. All other trademarks are the property of their respective owners.

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