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| Figure 1. In April 2007, the ORNL Leadership Computing Facility increased the computing power of Jaguar, a Cray XT-3 computing system, to 119 teraflops, making it the most powerful open scientific system in the world. |
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| The Oak Ridge Leadership Computing Facility (LCF) recently doubled the performance of the Cray XT-3 supercomputer, nicknamed Jaguar (figure 1), at the National Center for Computational Sciences. Work on doubling the size of the system was a substantial undertaking, involving 124 cabinets and 11,708 dual-core AMD Opteron processors. The system has a rating of 119 teraflops of peak performance, which translates to 119 trillion mathematical calculations per second. The enhanced computer also features 46 terabytes of memory and 750 terabytes of disk storage.
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The LCF at ORNL is on a path to reach 250 teraflops by late-2007 as dual-core processors will be replaced with AMD quad-core processors. The memory will also be doubled and the operating system will migrate to a version of Linux on the computer nodes.
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