Cray XT5
| Company type | Supercomputer |
|---|---|
| Industry | High-performance computing |
| Predecessor | Cray XT4 |
| Founded | November 6, 2007 |
| Products | Supercomputers (XT5 series including XT5h, XT5m) |
| Website | www |
The Cray XT5 represents an upgraded iteration of the Cray XT4 supercomputer, officially released on November 6, 2007. It incorporates an improved SeaStar2+ interconnect router and supports configurations using either XT4 compute blades, which contain four dual-core AMD Opteron sockets, or XT5 blades equipped with eight sockets compatible with dual- or quad-core Opterons. This system utilizes a 3-dimensional torus network architecture.
XT5 family
Operating on the Cray Linux Environment, the XT5 series combines SUSE Linux Enterprise Server with Cray's proprietary Compute Node Linux. The XT5h (hybrid) model accommodates Cray X2 vector processor blades alongside Cray XR1 blades that integrate Opterons with FPGA-based Reconfigurable Processor Units developed by DRC Computer Corporation.
Designed for mid-tier applications, the XT5m variant delivers most XT5 capabilities but employs a 2-dimensional torus network and supports scalability up to six cabinets.
In 2008, Cray deployed the Jaguar XT5 system at the National Center for Computational Sciences within Oak Ridge National Laboratory, achieving a performance of 1.3 petaflops. Featuring more than 150,000 processing cores, Jaguar secured second place worldwide on the LINPACK benchmark and was the inaugural system to sustain petaflops-level performance on a 64-bit scientific workload.
Following an upgrade in 2009, Jaguar expanded to 224,256 cores, elevating its performance to 1.75 petaflops and attaining first position on the 34th TOP500 list. It retained this leading status until June 2010 before being overtaken by China's Tianhe-1A system, which reached 2.57 petaflops in October 2010.
Another XT5 installation, known as Kraken, comprised 112,896 cores with a peak performance of 1.17 petaflops and was ranked number 21 on the TOP500 list as of June 2012.