China university knocks US off its perch with supercomputer, The semi-annual TOP500 listing of the world's fastest supercomputers, released on Monday, says the Tianhe-2 - a creation of the National University of Defence Technology in central China's Changsha city - is capable of sustained computing of 33.86 petaflops, or 33,860 trillion calculations,China nfl jerseys, per second. The Tianhe-2, which means Milky Way-2, knocks the US Energy Department's Titan machine off the top spot. It achieved 17.59 petaflops per second. Supercomputers are used for complex work such as modelling weather systems, simulating nuclear explosions and designing jetliners.
It's the second time a Chinese computer has been named the world's fastest. In November 2010,Cheap Oakley Sunglasses, the Tianhe-2's predecessor, Tianhe-1A, held the honour before Japan's K computer overtook it a few months later. The Tianhe-2 shows how China is leveraging rapid economic growth and sharp increases in research spending to join the US, Europe and Japan in the global technology elite. "Most of the features of the system were developed in China, and they are only using Intel for the main compute part," TOP500 editor Jack Dongarra, who toured the Tianhe-2 facility last month, said in a news release.
"The interconnect, operating system, front-end processors and software are mainly Chinese." Meanwhile, University of NSW researchers have taken another step towards a new generation of computers with processing power far beyond that of mere supercomputers. The UNSW team proposed a new way of distinguishing between "quantum bits" - the quantum equivalent of conventional computing bits, often consisting of single electrons - encased in the same silicon chip. The team is part of a push to develop quantum bits encased in silicon, which is manufactured widely and readily available. But team leader Michelle Simmons said the project required qubits to be placed with "atomic precision" within a few dozen nanometres of each other.
"This poses a technical problem in how to make them, and an operational problem in how to control them independently,Cheap Oakley Sunglasses," she said in a statement. The team's solution, published in Nature Communications, involved hosting the qubits in different clusters of atoms. "If each qubit is hosted by a single phosphorus atom, every time you try to rotate one qubit, all the neighbouring qubits will rotate at the same time and quantum computation will not work," said lead author Holger Buch. "But if each electron is hosted by a different number of phosphorus atoms,Cheap Oakleys Sunglasses, then the qubits will respond to different electromagnetic fields, and each qubit can be distinguished from the others."
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