China Keeps Supercomputing Title

A supercomputer developed by China’s National Defense University still is the fastest publically known computer in the world, while the U.S. is close to an historic low in the latest edition of the closely followed Top 500 supercomputer ranking, which was just published.

The Tianhe-2 computer, based at the National Super Computer Center in Guangzhou, has been on the top of the list for more than two years and its maximum achieved performance of 33,863 teraflops per second is almost double that of the U.S. Department of Energy’s Cray Titan supercomputer, which is at the Oak Ridge National Laboratory in Tennessee.

The IBM Sequoia computer at the Lawrence Livermore National Laboratory in California is the third fastest machine, and fourth on the list is the Fujitsu K computer at Japan’s Advanced Institute for Computational Science. The only new machine to enter the top 10 is the Shaheen II computer of King Abdullah University of Science and Technology in Saudi Arabia, which is ranked seventh.

The Top 500 list, published twice a year to coincide with supercomputer conferences, is closely watched as an indicator of the status of development and investment in high-performance computing around the world. It also provides insights into what technologies are popular among organizations building these machines, but participation is voluntary. It’s quite possible a number of secret supercomputers exist that are not counted in the list.

With 231 machines in the Top 500 list, the U.S. remains the top country in terms of the number of supercomputers, but that’s close to the all-time low of 226 hit in mid-2002. That was right about the time that China began appearing on the list. It rose to claim 76 machines this time last year, but the latest count has China at 37 computers.

The Top 500 list is compiled by supercomputing experts at the University of Mannheim, Germany; the University of Tennessee, Knoxville; and the Department of Energy’s Lawrence Berkeley National Laboratory.

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Energy Star Goes To Tablets

Coming to a tablet near you soon, Energy Star ratings.

The specification will be part of the Energy Star version 6.1, according to documents posted on the U.S. Energy Star website. But a date for ratings on tablets has not yet been established, said Robert Meyers, product manager at Energy Star computers. Energy Star is a joint effort between the U.S. Environmental Protection Agency and the U.S. Department of Energy.

The Energy Star specification helps shoppers identify the most power-efficient products when making purchases. The Energy Star program already covers laptops, desktops, monitors, light bulbs, servers, household appliances and other products that are identified with a label. The use of Energy Star-labeled products helped cut close to US$18 billion from U.S. utility bills in 2010, according to the organization.

The EPA and DOE originally floated the idea of including tablets as part of Energy Star version 6.0 for products like laptops, desktops, displays, thin clients and networking equipment, which goes into effect on June 1. Some IT vendors that participate in the Energy Star program argued against the immediate inclusion of tablets, saying that those devices are more like smartphones than PCs and have different assembly and equipment. They argued that tablets and laptops differ on components such as batteries and networking equipment, and thus cannot be grouped together with PCs. The EPA and those stakeholders are now trying to gather a consensus on the definition of tablets and how to rate the devices.

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