According with the latest Top500, which is updated twice a year, Tianhe-2 ("Galaxy-2") offers a power of 33,86 petaflops, that is, it can perform 33,6 quadrillion floating-point calculations per second. From the previous version of the Top500 to date, China has managed to increase them supercomputers της που μπαίνουν στη λίστα από τους 63 στους 76 -περίπου όσους η Βρετανία (30), η Γαλλία (27) και η Γερμανία (23) μαζί.Οι USA saw their share drop by 15%, but still remain far ahead with 233 systems on the list. In terms of manufacturers, HP comes in first with 182 systems, followed by IBM with 176 and Cray with 51. The champion Tianhe-2 operates at the Guançu National Computer Center and is used in research and education programs. It uses a combination of Galaxy Ft-1500 processors designed at Intel's Ivy Bridge and Xenon Phi processors and runs the Linux-based Kylin operating system, designed specifically for high-end applications.
Tianhe-2's demands on electricity are monstrous, since consumption reaches 17,8 Megawatt as much as a small town needs.
High power consumption was also the reason why it was excluded modeand in 2013 IBM's Roadrunner, the system that first broke the 1 pflops barrier five years ago.
The second place of the latest Top500, published by his team, Professor Hans Morner, at the University of Mannheim, Germany, is again the Titan (17,59 pflos), a Cray system operating at the Oak Ridge National Laboratory under the US Department of Defense.
Top500's performance is measured by the so-called Linpack test, which scores computers for the speed of execution of a specific linear equation. However, it does not take into account other factors that affect speed in real-world conditions, such as the rate of data transmission from one part of the system to another.
The latest version of Top500 will be presented later on Monday at the International Computer Conference held in Leipzig, Germany.
