HPCwire: Oak Ridge Super Is the World's Fastest for Science

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November 17, 2008

Oak Ridge Super Is the World's Fastest for Science

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OAK RIDGE, Tenn., Nov. 17 -- A Cray XT high-performance computing system at the Department of Energy's (DOE) Oak Ridge National Laboratory is the world's fastest supercomputer for science. The annual ranking of the world's TOP500 computers (www.top500.org) will be released Tuesday in Austin at an annual international supercomputing conference.

The Cray XT, called Jaguar, has a peak performance of 1.64 petaflops, (quadrillion floating point operations, or calculations) per second, incorporating 1.382 petaflops XT5 and 266 teraflops XT4 systems. Each component of the Jaguar system is separately ranked second and eighth on the current list of Top500 supercomputers in the world.

"This accomplishment is the culmination of our vision to regain leadership in high-performance computing and harness its potential for scientific investigation," said Undersecretary for Science Raymond L. Orbach. "I am especially gratified because we make this machine available to the entire scientific community through an open and transparent process that has resulted in spectacular scientific results ranging from the human brain to the global climate to the origins of the Universe."

Oak Ridge National Laboratory Director Thom Mason said the real value of the new machine will be measured by the scientific breakthroughs that will now be possible.

"We are proud to be home to the world's most powerful computer dedicated to open science, but we are more excited about the ability of Oak Ridge and the Department of Energy to take a leading role in finding solutions to scientific challenges such as new energy sources and climate change," Mason said.

In June, a DOE supercomputer named Roadrunner at Los Alamos National Laboratory was the first to break the petascale barrier. Built with advanced IBM Cell processors, Roadrunner helps ensure the reliability of America's nuclear weapons stockpile.

Beginning as a 26-teraflop system in 2005, Oak Ridge embarked upon a three-year series of aggressive upgrades designed to make their machine the world's most powerful computing system. The Cray XT was upgraded to 119 teraflops in 2006 and 263 teraflops in 2007. In 2008, with approximately 182,000 AMD Opteron processing cores, the new 1.64-petaflop system is more than 60 times larger than its original predecessor.

Thomas Zacharia, the laboratory's associate director for Computing and Computational Sciences, says petascale machines like Jaguar help advance critical scientific application areas by enabling researchers to get answers faster and explore complex, dynamic systems. In a matter of few days, Jaguar has already run scientific applications ranging from materials to combustion on the entire system, sustaining petaflops performance on multiple applications. A calculation that once took months can now be done in minutes. A 2008 report from the DOE Office of Science, America's largest funder of basic physical science programs at universities and government laboratories, said six of the top ten recent scientific advancements in computational science used Jaguar to provide unprecedented insight into supernovas, combustion, fusion, superconductivity, dark matter and mathematics.

The DOE's Office of Science makes Jaguar available to scientists in academia, industry and government to tackle the world's most complicated projects. Through the agency's Innovative and Novel Computational Impact on Theory and Experiment program, which allocates the supercomputer's resources through a peer-reviewed proposal system, researchers were allocated more than 140 million processor hours for 30 projects.

To date the computer simulations on Jaguar have focused largely on addressing new forms of energy and understanding the impact on climate resulting from energy use. For example, INCITE projects have simulated enzymatic breakdown of cellulose to make production of biofuels commercially viable as well as coal gasification processes to help industry design near-zero-emission plants. Combustion scientists have studied how fuel burns, which is important for fuel-efficient, low-emission engines. Computer models have helped physicists use radio waves to heat and control ionized fuel in a fusion reactor. Similarly, engineers have designed materials to recover energy escaping from vehicle tailpipes. Simulation insights have enabled biologists to design new drugs to thwart Alzheimer's fibrils and engineer the workings of cellular ion channels to detoxify industrial wastes.

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