Oak Ridge Today

ORNL’s Titan still No. 2 as China triples Top500 supercomputers

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Titan Supercomputer at Oak Ridge National Laboratory

The Titan supercomputer at Oak Ridge National Laboratory was once ranked as the world’s most powerful supercomputer, but it has since been ranked number two. (Photo courtesy of ORNL)

 

The Titan supercomputer at Oak Ridge National Laboratory remained at number two on a list of the world’s top 500 supercomputers released Monday. China tripled the number of its systems on the semiannual Top500 list, while the number of systems in the United States fell to the lowest point since the list was created in 1993.

The Tianhe-2 supercomputer in China again maintained the number one spot on the list of the world’s most powerful supercomputers. It’s the sixth consecutive time Tianhe-2 has been the top supercomputer. The system was developed by China’s National University of Defense Technology.

Titan was once the most powerful supercomputer.

The 46th edition of the twice-yearly TOP500 list of the world’s most powerful supercomputers was released Monday. [Read more…]

Chinese supercomputer stays No. 1, Titan at ORNL still No. 2

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Jeff Nichols and Titan at ORNL

Jeff Nichols, associate director for computing and computational sciences at Oak Ridge National Laboratory, in front of Titan, which was the world’s top supercomputer in November 2012 but is now ranked No. 2. (Photo courtesy of ORNL)

 

For the fourth consecutive time, Tianhe-2, a supercomputer developed by China’s National University of Defense Technology, has retained its position as the world’s number one system. Meanwhile, Titan at Oak Ridge National Laboratory, which was the top supercomputer in November 2012, remains number two.

Tianhe-2 is capable of performing at 33.86 petaflops, or 33.86 quadrillions of calculations per second, on a benchmark test known as Linpack.

The rankings are from the 44th edition of the twice-yearly TOP500 list of the world’s most powerful supercomputers, which was announced Monday in Mannheim, Germany; Berkeley, California; and Knoxville. Tianhe-2 has been in the top spot four consecutive times, and Titan has been number two each time. [Read more…]

Chinese supercomputer still No. 1, Titan at ORNL remains No. 2

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Jeff Nichols and Titan at ORNL

Jeff Nichols, associate director for computing and computational sciences at Oak Ridge National Laboratory, in front of Titan, which was the world’s fastest supercomputer in November 2012 but is now ranked No. 2. (Photo courtesy ORNL)

A Chinese supercomputer kept its No. 1 spot, and Titan at Oak Ridge National Laboratory stayed at No. 2 in the latest semiannual ranking of the world’s most powerful supercomputers.

The Chinese supercomputer, Tianhe-2, was developed by China’s National University of Defense Technology, and it’s been in the top spot three times in a row on the Top500 List. Tianhe-2 bumped Titan from the top spot in June 2013.

The Chinese supercomputer performed at 33.86 petaflops—that’s 33.86 quadrillion calculations per second—on a test known as the Linpack benchmark, the press release said. Titan performed at 17.59 petaflops.

There was little change among the ranking of the world’s Top 10 supercomputers in the latest edition of the closely watched list, a press release said. The only new entry was at number 10—a 3.14-petaflop Cray XC30 installed at an undisclosed U.S. government site.

The Top500 list was announced Monday morning. The list is compiled by Erich Strohmaier and Horst Simon of Lawrence Berkeley National Laboratory, Jack Dongarra of the University of Tennessee in Knoxville, and Martin Meuer of Prometeus, Germany. [Read more…]

DOE looks to UT’s Dongarra for input on computing advances

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Jack Dongarra

Jack Dongarra

KNOXVILLE—The U.S. Department of Energy recently released a report through its Office of Science detailing the Top 10 research challenges in reaching the level of exascale computing, once again calling on Jack Dongarra at the University of Tennessee in Knoxville, a press release said.

Dongarra—a distinguished professor in the College of Engineering’s Department of Electrical Engineering and Computer Science, director of the Innovative Computing Laboratory and one of five National Academy of Engineering members at UT—has long been at the forefront of exascale computing, or computing at roughly a thousand times the capability of recent supercomputers.

An icon in his field, Dongarra is a lead author of the Top500, a list he helped start in 1993 to measure the world’s fastest computers as well as numerous software packages for high-performance computing. [Read more…]

DOE report co-chaired by UT professor calls for renewed focus on high-end math research

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Jack Dongarra

Jack Dongarra

Professor also ORNL researcher, co-author of Top 500 ranking of the world’s most powerful supercomputers

KNOXVILLE—The U.S. Department of Energy recently released a report co-chaired by Jack Dongarra, a distinguished professor at the University of Tennessee in Knoxville, in which he stresses the importance of prioritizing research into high-end mathematics to help keep the United States on the cutting edge of computing.

“Exascale computing (capable of one quintillion floating point operations per second) will enable us to solve problems in ways that are not feasible today and will result in significant scientific breakthroughs,” said Dongarra, of UT’s Department of Electrical Engineering and Computer Science. “However, the transition to exascale poses numerous scientific and technological challenges.”

Dongarra, one of five National Academy of Engineering members on the faculty of UT’s College of Engineering, said that increased funding for the development of new models and ways of gathering data is key to unlocking a number of those challenges. [Read more…]

Chinese supercomputer still No. 1, ORNL’s Titan No. 2

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Titan Supercomputer at Oak Ridge National Laboratory

Titan at Oak Ridge National Laboratory stayed at No. 2 in a Top 500 ranking of the world’s most powerful supercomputers released Monday morning. (Photo courtesy of ORNL)

A Chinese supercomputer kept its top ranking, and Titan at Oak Ridge National Laboratory stayed at No. 2 in a Top 500 ranking of the world’s most powerful supercomputers released Monday morning.

The top two spots were unchanged from the semiannual rankings released five months ago in June, when Tianhe-2, a supercomputer developed by China’s National University of Defense Technology, bumped Titan from the top spot. The ORNL supercomputer had been named No. 1 one year ago.

The rankings released Monday at the SC13 conference in Denver, Colo., said Tianhe-2 is capable of performing 33.86 petaflops. That’s 33.86 quadrillion calculations per second, on what is known as a Linpack benchmark test.

Titan is a Cray XK7 system that achieved 17.59 petaflops. Titan is one of the most energy-efficient systems on the list, consuming a total of 8.21 megawatts and delivering 2.143 gigaflops per watt, a press release said. [Read more…]

UT professor, ORNL staff member to be honored for supercomputing accomplishments

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Jack Dongarra

Jack Dongarra

KNOXVILLE—Jack Dongarra, distinguished professor of computer science at the University of Tennessee in Knoxville, is being honored for his leadership in high performance computing.

He will receive the Association for Computing Machinery-Institute for Electrical and Electronics Engineers Computer Society Ken Kennedy Award on Nov. 19 in Denver at SC13, the International Conference on High Performance Computing.

Dongarra, who is also a distinguished research staff member at Oak Ridge National Laboratory, is being recognized for designing and promoting standards for mathematical software used to solve numerical problems common to high-performance computing. His work has led to the development of major software libraries of algorithms and methods that boost performance and portability in high-performance computing environments. [Read more…]

Chinese supercomputer bumps ORNL’s Titan from No. 1 spot

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Tianhe-2 Lights

Lights on the Chinese Tianhe-2 supercomputer, which has a theoretical peak that is twice as fast as the Titan supercomputer at Oak Ridge National Laboratory. (Photo courtesy Jack Dongarra)

A Chinese supercomputer has bumped the Titan supercomputer at Oak Ridge National Laboratory from the No. 1 spot on a semiannual ranking of the world’s most powerful supercomputers.

The Tianhe-2, which was developed by China’s National University of Defense Technology, is capable of 33.86 petaflops, or more than 33,000 trillion calculations per second.

Now ranked No. 2, Titan was able to perform 17,000 trillion calculations per second, or 17.59 petaflops, according to the list published in November. [Read more…]

World’s fastest supercomputer at ORNL more about research than rankings

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Titan Supercomputer at Oak Ridge National Laboratory

The Titan supercomputer at Oak Ridge National Laboratory is now ranked as the world’s fastest. (Photo courtesy of ORNL)

The No. 1 ranking for the new Titan supercomputer, designating it as the most powerful in the world, was clearly appreciated in East Tennessee on Monday.

But even as they celebrated a return to the top spot, scientists at Oak Ridge National Laboratory, where the giant computer is based, said they are focused more on research than rankings.

“We love being No. 1,” said Bronson Messer, acting group leader for scientific computing at the National Center for Computational Science at ORNL. “It’s great recognition. But what really matters is what science will do with the machine.”

[Read more…]