Oak Ridge Today

Supercomputers: China still has top two, ORNL’s Titan remains No. 3

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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 was ranked number three in November 2016 in the semiannual TOP500 List. (Photo courtesy of ORNL)

 

China still has the two fastest supercomputers in the world, and Titan at Oak Ridge National Laboratory remains number three.

The semi-annual TOP500 List of the world’s top supercomputers was released last Monday, November 14, at a conference in Salt Lake City.

Titan, a Cray XK7 system installed at ORNL, a U.S. Department of Energy laboratory, has achieved 17.59 petaflops, or quadrillions of calculations per second.

The most powerful supercomputer, a relatively new Chinese supercomputer named Sunway TaihuLight, is capable of 93 petaflops. It is built entirely using processors designed and made in China. In June, it displaced Tianhe-2, an Intel-based Chinese supercomputer that had claimed the number one spot on the six previous TOP500 lists.

Tianhe-2, the number two system, achieved a speed of 33.86 petaflops, or more than 33,000 trillion calculations per second, in a test known as the LINPACK benchmark. That ranking program uses a series of linear equations to test computer systems around the world. [Read more…]

New Chinese supercomputer named world’s fastest; ORNL’s Titan drops to No. 3

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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. 3. (File photo courtesy ORNL/October 2013)

 

China maintained its number one ranking in the latest edition of the TOP500 list of the world’s top supercomputers, but with a new system built entirely using processors designed and made in China.

China now has the top two supercomputers on the semiannual TOP500 list, and Titan at Oak Ridge National Laboratory has dropped from number two to number three.

The new Chinese supercomputer, Sunway TaihuLight, is capable of 93 petaflops, or quadrillions of calculations per second, a press release said.

It displaced Tianhe-2, an Intel-based Chinese supercomputer that had claimed the number one spot on the past six TOP500 lists. Tianhe-2 achieved a speed of 33.86 petaflops, or more than 33,000 trillion calculations per second, in a test known as the LINPACK benchmark.

Titan, a Cray XK7 system installed at ORNL, a U.S. Department of Energy laboratory, achieved 17.59 petaflops.

Titan was the top system for a short time. It was number one in November 2012, but it was bumped to number two behind Tianhe-2 in June 2013. This is the first time it has been number three.

The latest list marks the first time since the start of the TOP500 that the United States is not home to the largest number of systems. With a surge in industrial and research installations registered over the last few years, China leads with 167 systems and the U.S. is second with 165. China also leads the performance category, thanks to the number one and number two systems, the press release said. [Read more…]

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…]

Supercomputers: China’s Tianhe-2 still No. 1, ORNL’s Titan stays 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. (Photos courtesy of ORNL/File photo October 2013)

 

For the fifth 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, according to the 45th edition of the twice-yearly TOP500 list of the world’s most powerful supercomputers. Tianhe-2, which means Milky Way-2, led the list with a performance of 33.86 petaflop/s (or quadrillions of calculations per second) on the Linpack benchmark.

At number two was Titan, a Cray XK7 system installed at the U.S. Department of Energy’s Oak Ridge National Laboratory. Titan, the top system in the United States and one of the most energy-efficient systems on the list, achieved 17.59 petaflop/s on the Linpack benchmark.

The only new entry in the Top 10 supercomputers on the latest list is at number seven—Shaheen II is a Cray XC40 system installed at King Abdullah University of Science and Technology, or KAUST, in Saudi Arabia. Shaheen II achieved 5.536 petaflop/s on the Linpack benchmark, making it the highest-ranked Middle East system in the 22-year history of the list and the first to crack the Top 10. [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…]

UT study: Lackluster growth in first quarter, but overall gains expected in 2014

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KNOXVILLE—An abnormally harsh winter led to lackluster economic growth the first quarter of 2014, but a dip in unemployment rates and expected increases in housing investments signal stronger gains for the remainder of the year.

The gross domestic product is expected to increase 2.4 percent this year as a whole, compared to 1.9 percent last year, according to the spring 2014 Tennessee Business and Economic Outlook released Friday at the University of Tennessee in Knoxville.

The national unemployment rate will likely average 6.5 percent this year compared to 7.4 percent last year, the report shows. It is expected to decrease to 6 percent in 2015.

The study, prepared by UT’s Center for Business and Economic Research, predicts the direction of the state and national economies by examining many economic and fiscal factors and trends. [Read more…]

ORAU: Nearly 2/3 of foreign doctorates staying in U.S. 10 years after graduation

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Oak Ridge Associated Universities Building MC-100

The Oak Ridge Associated Universities Building MC-100 is pictured above.

ORISE report suggests foreign doctorate recipients routinely take regular employment in the U.S. after completing postdoctoral appointments

The number of foreign, science, and engineering doctorate students who remain in the United States after graduation has declined slightly during the past five to 10 years, but long-term stay rates indicate that nearly two-thirds of foreign doctorates are continuing to stay in the U.S. These are the latest findings in a series of biennial reports that have been produced by the Oak Ridge Institute for Science Education and funded by the National Science Foundation since 2000.

The latest report is titled “Stay Rates of Foreign Doctorate Recipients from U.S. Universities, 2011.” It documents a study in which 2011 tax records—the most recent data currently available for the study—were used to estimate the proportion of foreign doctorate recipients from U.S. universities who stayed in the U.S. after graduation for any reason. The “Survey of Earned Doctorates,” published annually by the NSF, collects information from each graduate school on people completing doctorates each year. The Social Security Administration then calculates the proportion of those graduates with annual earnings of $5,500 or more, and these tabulations are used with appropriate adjustments (e.g., death) to produce the stay rate.

The 2011 stay rate for all foreign doctorate recipients, including those on permanent visas at graduation, was 68 percent for those graduating five years earlier, and 65 percent for those graduating 10 years earlier. [Read more…]

ORAU Annual Report highlights impact of early career researchers on U.S. scientific mission

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Jason Hayward

Jason Hayward, who has a doctorate in nuclear engineering from the University of Michigan, holds a high-resolution instrument, which is part of his research to benefit facilities like Oak Ridge National Laboratory’s Spallation Neutron Source. (Photo credit: University of Tennessee)

With U.S. falling behind China and India in numbers of STEM graduates, strengthening U.S. scientific talent is critical, according to report

Jason Hayward is applying his nuclear engineering research expertise to develop the next generation of high-resolution instruments for facilities like Oak Ridge National Laboratory’s Spallation Neutron Source.

Hayward, who has a doctorate in nuclear engineering from the University of Michigan, hopes his work will eventually help curtail the spread of nuclear weapons and assist in identifying viable alternative energy sources. Hayward is an assistant professor of nuclear engineering at the University of Tennessee, a joint faculty member with ORNL’s Nuclear Security and Isotope Technology Division, a U.S. Department of Energy research award recipient, and a participant in the Higher Education Research Experiences Program.

He and many other early career researchers are participating in fellowships and internships managed by Oak Ridge Associated Universities with DOE and other federal agencies, and they are the main focus of ORAU’s “2013 Annual Report,” which has just been released. [Read more…]

Chief engineer for U.S. ITER at ORNL to give project overview on Tuesday

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Brad Nelson

Brad Nelson

The chief engineer for the U.S. ITER Project at Oak Ridge National Laboratory will give a project overview on Tuesday.

Brad Nelson is the chief engineer for the U.S. International Thermonuclear Experimental Reactor Project. His Tuesday talk will be the first in a series of three presentations on the U.S. ITER project to Friends of ORNL, with Hans Vogel speaking on April 8 and Graeme Murdoch speaking on May 13.

The New Yorker published a story on ITER in its March 3 edition titled “A Star in a Bottle” by Raffi Khatchadourian.

Nelson’s Tuesday presentation during a Friends of ORNL luncheon lecture starts at noon at the University of Tennessee Resource Center in Oak Ridge. [Read more…]

Violin concert on Saturday will help ADFAC

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Aaron Colverson

Aaron Colverson

Aaron Colverson, a classically trained violin soloist, will play a mix of contemporary and classical music during a Saturday night fundraising concert in Oak Ridge.

The music from Africa, combined with the Appalachian music, will be followed by music from China and from music’s Classical era.

The coffee concert starts at 7:30 p.m. Saturday at First Presbyterian Church in Oak Ridge. It’s presented by the Oak Ridge Civic Music Association, and it will feature visual imagery along with the music.

The concert is free, but donations of $5 or more are suggested. All proceeds will benefit Aid to Distressed Families of Appalachian Counties, or ADFAC. [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…]