With the technology moving at a fast pace, countries especially the developed ones are on a stiff competition to catch up with the supercomputing power they posses. While USA and China had taken the supercomputing to the Peta-flop level, with USA at the forefront achieving a landmark of 1.7 Peta-flops with their Jaguar(Cray) super computer, while China taking the second position with their 1.2 Peta-flop super computer.
The research laboratories had reveled that, in near future the super computing speeds are going to be taken to Exa-flops level, which could crunch a whopping of one quintillion (one million trillion) calculations per second. The Exa-scale system is proposed to process tons of data sourced from SKA (Square Kilometer Array), which are a series of telescopes spread over hundreds of square kilometers.
Here in a current release of the biannual supercomputing survey, you can find the Top 500 supercomputers grouped on the basis of Country, OS, Processor and many more parameters.