The U.S. Department of Energy's Oak Ridge National Laboratory is upgrading the Jaguar supercomputer, which is currently the most powerful system in the United States.
Once the upgrades are complete, the modified system will be renamed Titan and be capable of up to 20 petaflops, according to Oak Ridge's Leo Williams. As a part of the upgrade process, Jaguar’s 224,256 AMD Opteron cores were replaced with 299,008 of the latest 6200 series. In addition, Jaguar’s interconnect was updated and its memory was doubled to 600 terabytes. As Jaguar transitioned to Titan, the system also received 960 NVIDIA graphical processing units, which will help make it possible for Titan to reach 20 petaflops.
An important part of the upgrade process is keeping the system available to researchers. "During our upgrade, we have kept our users on Jaguar every chance we get," says Oak Ridge's Jack Wells. If Titan reaches its projected speeds, it will overtake Japan's K Computer, which has reached speeds of 10.51 petaflops, as the world's fastest supercomputer.
From Government Computer News
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