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AMD & Cray News - 04/04/05
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Leading IT Provider GTSI Adds Cray XD1 Supercomputer to Its Solutions Portfolio to Give Customers Added Computing Power

Partnership Combines Top-Performing Cray XD1 Platform With GTSI Expertise

Global supercomputing leader Cray Inc. (NASDAQ: CRAY) today announced that it is teaming with government IT leader GTSI Corp. (NASDAQ: GTSI) to offer the Cray XD1
Opteron/Linux-based supercomputer to government agencies looking for powerful yet cost-effective supercomputing solutions. As a member of the recently launched Cray Channel Partner Program, GTSI will market the Cray XD1 system to a diverse customer base needing exceptional performance and scalability.

"Governments at every level are reaching out to citizens with programs and initiatives that require quantum leaps in computing power," said Jim Sweeney, GTSI's Linux technology practice manager. "By adding Cray's XD1 supercomputer to our broad range of products and services, we can offer our government customers a powerful Linux-based high performance computing (HPC) solution that meets their demanding performance requirements, while also staying within their budgets."

"We're delighted to welcome GTSI into our partnership program," said Steven Joachims, vice president of business development for Cray. "The company's extensive experience tailoring solutions for the government IT market gives us a great opportunity to showcase the industry-leading capabilities of the Cray XD1 system in a variety of government computing environments. For scientists and engineers in need of a platform that can easily handle their processing-intensive departmental and agency-wide applications, the Cray XD1 supercomputer delivers performance and scalability that was formerly only available on larger, more expensive systems."

The
Cray XD1 supercomputer has been adopted by a number of government organizations worldwide, including the Desert Research Institute in Reno and Las Vegas, Nevada; the National Institute of Environmental Health Sciences in Manassas, Virginia; the U.S. Air Force Maui High Performance Computing Center on Maui, Hawaii; the Ohio Supercomputing Center in Columbus, Ohio; the Pacific Northwest National Laboratory in Richland, Washington; the Alabama Supercomputing Authority in Montgomery, Alabama; and the USDA Forest Service Fire Sciences Laboratory in Missoula, Montana.

The Cray Channel Partner Program was established to bring the innovative Cray XD1 supercomputer to the global HPC market. Cray provides partners with expertise, services, and support aimed at helping them deliver best-in-class HPC solutions to their customers.

About GTSI Corp.

GTSI Corp. is the leading information technology product and solutions aggregator, combining best of breed products and services to produce solutions that meet government's evolving needs. For more than two decades, GTSI has focused exclusively on federal, state, and local government customers worldwide, offering a broad range of products and services, an extensive contract portfolio, flexible financing options, global integration and worldwide distribution. GTSI's unique Technology Practices consisting of certified experts, deliver exceptional solutions to support government's critical transformation efforts. Additionally, GTSI focuses on systems integrators on behalf of government programs. GTSI is headquartered in northern Virginia, outside of Washington, D.C. Further information about the Company is available at www.GTSI.com/About.

About the Cray XD1 Supercomputer

The
Cray XD1 supercomputer features direct connect processor (DCP) architecture, which removes PCI bottlenecks and memory contention to deliver superior sustained performance. According to the HPC Challenge benchmarks, the Cray XD1 system has the lowest latency of any comparable HPC system, with MPI latency of 1.8 microseconds and random ring latency of 1.3 microseconds.

Tests conducted by the
Ohio Supercomputer Center show that the Cray XD1 system ships messages with four times lower MPI latency than common cluster interconnects such as Infiniband and Quadrics, and 30 times lower than Gigabit Ethernet employed in lowest-cost clusters. The Cray XD1 interconnect delivers twice the bandwidth of 4X Infiniband for messages up to 1 KB and 60 percent higher throughput for very large messages.

The Cray XD1
Opteron/Linux system runs x86 32/64 bit codes. Field-programmable gate arrays (FPGAs) are available to accelerate applications, and the Active Manager subsystem provides single-system command and control and high-availability features. The system can nearly double its performance with AMD Opteron dual-core processors when they become available later this year.

A 3VU (5.25") chassis provides 12 compute processors, 58 peak gigaflops, 96 GB/second aggregate switching capacity, 1.8-microsecond MPI interprocessor latency, 84 GB maximum memory and 1.5 TB maximum disk storage. A 12-chassis rack provides 144 compute processors, 691 peak gigaflops, 1TB/second aggregate switching capacity, 2 microsecond MPI interprocessor latency, 922 GB/second aggregate memory bandwidth, 1 TB maximum memory and 18 TB maximum disk storage.

About Cray Inc.

The world's leading supercomputer company, Cray Inc. pioneered high-performance computing with the introduction of the Cray-1 in 1976. The only company dedicated to meeting the specific needs of HPC users, Cray designs and manufactures supercomputers used by government, industry and academia worldwide for applications ranging from scientific research to product design, testing to manufacturing. Cray's diverse product portfolio delivers superior performance, scalability and reliability to the entire HPC market, from the high-end capability user to the department workgroup.

Safe Harbor Statement

This press release contains forward-looking statements. There are certain factors that could cause Cray's execution plans to differ materially from those anticipated by the statements above. These include the successful porting of application programs to Cray systems and general economic and market conditions. For a discussion of these and other risks, see "Factors That Could Affect Future Results" in Cray's most recent Quarterly Report on Form 10-Q filed with the SEC.

Cray is a registered trademark, and Cray XD1 is a trademark, of Cray Inc. All other trademarks are the property of their respective owners.