Exascale computingAt present, the world’s fastest supercomputer is a machine working at the Oak Ridge National Physical Laboratory in the U.S. state of Tennessee.

Supercomputer created by company Cray has a capacity of 18 petaflop / s. These are the findings of the latest ranking Top500, updated in November last year. The rating now preparing to upgrade.

As reported by a number of publications in the June ranking leader, apparently, again take China, which had previously led the list. Earlier in the PRC program was announced in the direction of motion exascale systems, and now China is ahead of Europe and Japan.

Jack Dongarra, a professor at the University of Tennessee and one of the authors of the most powerful supercomputers ranking Top500, today announced on his blog that he had recently returned from China, where he attended a conference on May 28-29, National University of Defense Technology, which discussed the new flagship of China’s supercomputer industry – Tianhe-2.

This machine is to replace Tianhe-1A shown in November 2010.

The new supercomputer will be approximately 32,000 multi-core Intel Xeon Ivy Bridge and about 48,000 co-processors Xeon Phi, working on the basis of architecture Intel Many Integrated Core. Each chip Phi gives a teraflop performance.

Dongarra said that with such a machine China is likely to once again lead the ranking Top500, whereas in the U.S. similar to the power solution will not appear until 2015. According to him, China and creates its own processors, but they are not powerful enough. However, in Tianhe-2 already has some purely Chinese developments, such as interconnects, and 16-core chips Galaxy FT-15.

When enabled Tianhe-2 with cooling consumes 24 megawatts.

Dongarra said that, technically, on modern chips already it would be possible to create a Exascale computer, but with the consumption of it would need its own power station.

Officially, China says exaflops computers they will have until 2020.

Power’s new Tianhe-2 record is to present measures 54.9 petaflop / s, which is more than twice as powerful U.S. supercomputer. The cost of the machine is more than $ 290 million.

Top 5 systems

The Top 5 systems on
the Top 500 list have the following Gflops/Watt efficiency


Comparison of the Cray XK7 Titan at Oak Ridge National Laboratory and Tianhe-2

For more details check out Dr. Dongarra’s extensive report here