Supercomputer is a type of computer that is use for high level of performance. The performance of a supercomputer is measured in floating point operations per second ( FLOPS ).
It is impossible to know the exact numbers of supercomputers in the world. It is believed that there are thousands of supercomputers all over the world. US, China and Japan are leading in the production of supercomputers. Ireland is coming up. All of the world's fastest 500 supercomputers run Linux-based operating systems.
A professor at the University of Kentucky who had been involved in the creation of hundreds of systems that allow people to build supercomputers guessed at tens of thousands operating in the world. This guess was over a year ago. However, he notes that super-computers age rapidly, so the number actually operating will fluctuate considerably at any one time.
The US this summer will finish building two supercomputers with speeds of 200 petaflops and 130 petaflops respectively, challenging China's superiority in this field of the last few years. However, China is building a pre-exascale supercomputer this year that could outperform Summit, the US supercomputer just mentioned. Ireland is also coming up as a contender in building supercomputers, but Japan comes a weak third to US and China at present if the top 500 supercomputers are considered.
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