“The average energy efficiency of the top supercomputers in the world increased by 10 percent,” said Wu Feng (http://people.cs.vt.edu/~feng), an associate professor within the College of Engineering’s computer science and the electrical and computer engineering departments at Virginia Tech, of the latest rankings (http://www.green500.org/lists/2009/06/list.php).
Contact information for Dr. Wu Feng is (540) 231-1192 E-mail: email@example.com
The 10 percent increase in energy efficiency translates to a 10 megaflops/watt improvement, rising to 108 megaflops/watt from 98 megaflops/watt recorded in November 2008. (Megaflops stand for millions of floating-point operations per second.) Also, aggregate power of the list increased by 15 percent, to 230 megawatts from 200 megawatts. “While the supercomputers on the Green500 are collectively consuming more power, they are using the power more efficiently than before,” Feng added.
The Green500 List (http://www.green500.org) serves as a ranking of environmentally friendly, low-energy supercomputers and a complement to the TOP500 List. The Green500 debuted in November 2007 at the 2007 Supercomputing conference to provide a foundation for tracking trends in green supercomputing.
For the first time, the rankings show maximum energy efficiency remaining the same, but three 500-megaflops/watt supercomputers fell out of the Green500. “The three supercomputers that occupied the No. 2 spot on the November 2008 Green500 are no longer computationally powerful enough to be considered among the TOP500 supercomputers in the world, and hence, they dropped off the Green500 List. This occurrence thus provides further fuel to the argument for a ‘more inclusive’ Green500,” Feng said. “If the trend of performance doubling continues, the No. 1 machine on this Green500 is unlikely to make the November 2009 Green500 List.”
Topping the list is the BladeCenter QS22 Cluster, PowerXCell 8i 4.0 Gigahertz, Infiniband, operated by the Interdisciplinary Centre for Mathematical and Computational Modeling at the University of Warsaw.
Also significant: More machines range more than 200 megaflops/watt, while fewer machines are less than 50 megaflops/watt. “As more powerful supercomputers supplant the less powerful, these new machines are performing their computations more energy efficiently,” Feng said.
Meanwhile, a self-made accelerator-based supercomputer from the National Astronomical Observatory of Japan catapulted into fifth spot. The self-made GRAPE-DR could be the first Green500 supercomputer with more than a million processing elements at 2.097 million, Feng said.
The College of Engineering (http://www.eng.vt.edu/) at Virginia Tech is internationally recognized for its excellence in 14 engineering disciplines and computer science. The college's 5,700 undergraduates benefit from an innovative curriculum that provides a "hands-on, minds-on" approach to engineering education, complementing classroom instruction with two unique design-and-build facilities and a strong Cooperative Education Program. With more than 50 research centers and numerous laboratories, the college offers its 1,800 graduate students opportunities in advanced fields of study such as biomedical engineering, state-of-the-art microelectronics, and nanotechnology. Virginia Tech, the most comprehensive university in Virginia, is dedicated to quality, innovation, and results to the commonwealth, the nation, and the world.
Study suggests buried Internet infrastructure at risk as sea levels rise
18.07.2018 | University of Wisconsin-Madison
Microscopic trampoline may help create networks of quantum computers
17.07.2018 | University of Colorado at Boulder
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
19.07.2018 | Earth Sciences
19.07.2018 | Power and Electrical Engineering
19.07.2018 | Materials Sciences