Cray XT3

[1] In the same year, a commercial version called Cray XT3 was released, achieving a technical balance between computing, memory, network, and I/O operations.

[3]: 6  Red Storm was developed to offering customizable components and to scale by networking multiple cabinets together, each houses 96 processing elements, arranged in a 3-dimensional torus topology.

[1]: 458 Each element comprises a 2.4 or 2.6 GHz AMD Opteron processor with up to two cores, a custom "SeaStar" communications chip, and between 1 and 8 GB of RAM.

Service and IO PEs run the full version of SuSE Linux and are used for interactive logins, systems management, application compiling and job launch.

I/O PEs use physically distinct hardware, in that the node boards include PCI-X slots for connections to Ethernet and Fibre Channel networks.