Voltaire Dominates InfiniBand Deployments in Top500 Supercomputer List.

HEIDELBERG, Germany & BILLERICA, Mass. -- Voltaire's 288 Port Switch Provides Performance and Manageability for World's Most Powerful Clustered Systems

Voltaire, the leader in interconnect solutions for high performance grid computing, today announced that the company's InfiniBand-based grid interconnect solutions are powering eight of the world's fastest supercomputers as ranked on the Top500 list released on Wednesday. This includes NASA's Columbia supercomputer, which holds the number-three position on the list with performance of 51.87 teraflops. Voltaire's grid switching solutions deliver industry-leading performance and networking efficiency to enable highly scalable clusters and distributed computing architectures.

The Top500 list (www.top500.org), published twice a year prior to the International Supercomputer Conference held this week in Heidelberg, Germany, and the Supercomputing Conference in November, 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 eight supercomputer clusters, representing more than forty percent of the InfiniBand-based solutions on the list, and more than any other InfiniBand systems vendor. The majority of the Voltaire installations leverage the Voltaire ISR 9288, the industry's highest port count multi-service switch with InfiniBand, Gigabit Ethernet and Fibre Channel integrated into a single chassis.

In addition to NASA, Voltaire customers Sandia National Laboratories, the Institute of Genomics and Integrative Biology (IGIB), Shanghai University, Beijing University, Mississippi State University and DLR (German Space Agency) all achieved Top500 status with clustered supercomputers networked with Voltaire's InfiniBand-based grid interconnect solutions. Voltaire's acclaimed management software, VoltaireVision(TM), provides the management capabilities for the 1,100 node Virginia Tech cluster ranked fourteenth on the list.

The Voltaire ISR 9288, a 288 port 4X (10 Gbps) multi-service switch with integrated InfiniBand, GbE and Fibre Channel delivers the interconnect performance for the NASA, Sandia, IGIB, Shanghai University, Beijing University, and DLR supercomputer clusters. Using one or more of the high port count switches, the clusters achieved extremely high bandwidth and low latency out of the box.

"Voltaire's leadership position on the Top500 list underscores our key value to customers as the interconnect vendor with the innovation and experience to help build high performance clusters and grids that tackle the world's most complex business and scientific challenges," said Ronnie Kenneth, chairman and CEO, Voltaire. "Customers around the globe are leveraging Voltaire's 288 port multi-service switches as the backbone for large clusters and compute grids and this list is a clear indicator of that trend."

Voltaire provides grid interconnect hardware and software solutions based on InfiniBand technology that enable high performance applications to run on distributed server, storage and network resources. Voltaire multi-service switches offer integrated InfiniBand, GbE and Fibre Channel connectivity and are used for building high-performance clusters and grids ranging from tens to thousands of nodes. To deliver complete cluster solutions to customers, Voltaire has established OEM agreements with leading server vendors IBM, HP, SGI, and Apple, and joint sales relationships with Sun, NEC and Hitachi.

In a separate release this week, the company announced support for double data rate (DDR) InfiniBand technology that offers twice the bandwidth of current InfiniBand solutions delivering performance superior to any other interconnect - proprietary or standards-based - available on the market today. Voltaire expects to ship DDR capabilities in its ISR 9096 and ISR 9288 modular switches in early Q4 2005. More information is available at http://www.voltaire.com/press_release_06_21_05.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.