Voltaire Continues to Lead InfiniBand Growth in Top500 Supercomputer List.

PITTSBURGH & BILLERICA, Mass. -- Leveraging Voltaire's 288 Port Multi-protocol InfiniBand Switch and Industry-Standard Processors, NASA's Columbia Supercomputer Ranks Among the World's Best

Voltaire, the leader in interconnect solutions for high performance grid computing today announced that the company's InfiniBand interconnect solutions are powering six of the world's fastest supercomputers as ranked on the Top500 list released on Monday. In addition, Voltaire solutions provide the high performance interconnect for NASA's Columbia supercomputer, which seized the number-two position on the list with performance of 51.87 teraflops. This is the world's largest production supercomputer built with industry-standard, commercially-available components. Voltaire's solutions deliver industry-leading networking efficiency for increased cluster scalability and server utilization.

The Top500 list (www.top500.org), published twice a year prior to the Supercomputing Conference held this week in Pittsburgh, PA and the International Supercomputer Conference in June, ranks supercomputers worldwide according to their performance on the LINPACK benchmark. Voltaire continues to lead the growth of InfiniBand deployments on the prestigious list with six supercomputer clusters, more than any other InfiniBand systems vendor.

In addition to NASA, Voltaire customers Mississippi State University, Ohio Supercomputer Center, Shanghai University and two clusters at Sandia National Laboratories all achieved Top500 status with supercomputer-class clusters networked with Voltaire's InfiniBand-based interconnect solutions. The Voltaire ISR 9288, a 288 port 4X (10 Gbps) multi-protocol InfiniBand switch which became generally available in September 2004, delivers the interconnect performance for both the NASA and Shanghai University supercomputer clusters. Using the single high port InfiniBand switch, the clusters were able to achieve extremely high bandwidth and low latency out of the box. The 10,240 processor NASA Columbia supercomputer was built and in production in less than 120 days. With the first ISR 9288-powered clusters achieving Top500 status, Voltaire expects many more ISR 9288 customers to appear on future lists.

"We are extremely pleased to see our customers experience such breakthrough performance results using InfiniBand technology and industry-standard platforms," said Ronnie Kenneth, chairman and CEO, Voltaire. "Voltaire is leading the industry with innovative solutions like our 288 port InfiniBand switch that make world-class performance attainable using a single switch. It is proving to be a ticket to the Top500."

Voltaire provides the high performance interconnect for six supercomputers on the 24th edition of the Top500 list. These include:

--NASA Ames in the #2 position;

--Shanghai University in the #209 position:

--Mississippi State University in the #211 position;

--Sandia National Laboratories in the # 334 position;

--Ohio Supercomputer Center in the #456 position; and

--Sandia National Laboratories in the #479 position.

Voltaire interconnect solutions consist of InfiniBand switch routers with integrated IP and Fibre Channel connectivity, fabric management software, adapters and software that enable high performance applications to run on commodity server, storage and network resources that are virtualized into supercomputers. The latest addition to Voltaire's family of interconnect solutions is the Voltaire ISR 9096, a 96-port InfiniBand switching solution designed to deliver superior performance to mid-sized clusters and grids. This is the industry's only 96 port InfiniBand switch that offers integrated GbE and Fibre Channel ports for network and storage virtualization for high performance clusters, grids and utility computing. More information is available at www.voltaire.com/isr_9096.htm.

About Voltaire

Voltaire is the leader in interconnect solutions for high performance grid computing. Voltaire's InfiniBand-based interconnect solutions deliver significant return on investment to the data center by improving the performance and utilization of clustered databases, shared servers and storage. For HPC customers, Voltaire leads the industry with the largest switch to support clusters scaling from hundreds to thousands of nodes. With business headquarters near Boston, Massachusetts, Voltaire is certified by the IBTA's Integrator's List. More information about Voltaire is available at www.voltaire.com or by calling 1-800-865-8247.