PRESS RELEASE Cray XT4 Supercomputer Debuts With Petascale Capability and Significant Backlog of Large Orders

PRESS RELEASE Cray XT4 Supercomputer Debuts With Petascale Capability and Significant Backlog of Large Orders: "The Cray XT4 supercomputer uses up to 30,000 AMD Opteron dual-core processors running a highly scalable operating system and interfaced to the Cray SeaStar2™ interconnect chip to provide unsurpassed scalability and performance. Unlike typical cluster architectures, in which many microprocessors share one communications interface, each AMD Opteron processor in the Cray XT4 system is coupled with its own interconnect chip. Providing six links in three dimensions, the unique Cray SeaStar2 chip uses its embedded routing capability to take advantage of HyperTransport™ technology and significantly accelerate communications among the processors"