(I)Tianhe-2
Tianhe-2 is the name of the world’s most powerful supercomputer. It is owned by the National Supercomputer Center, which is in Guangzho, China. This great computer was built in China by the National University of Defense Technology, abbreviated as NUDT.
(ii) Titan
This one joined the top league after being upgraded in 2012. Its location is Oak Ridge National Laboratory in the US, and its user is the United States Department of Energy.
(iii) Sequoia
This is another US supercomputer, and it is located in Lawrence Livermore National Laboratory in the state of California. It has been used largely in matters of climate, energy, as well as astronomy.
(iv) K Computer
The K Computer is a product of Fujitsu, who built it at the Advanced Institute for Computational Science (AICS). This institute is within RIKEN, Japan’s biggest research institution, situated in the city of Kobe.
(v)Mira
This is another of US’s supercomputers. It is located within the Argonne National Laboratory, which is at the outskirts of Chicago, and is largely used the US Department of Energy.
(vi) Piz Daint
This one is to be found in Switzerland, precisely in its southern city of Lugano. It is located at the Swiss National Supercomputing Center. Europe does not have a more powerful supercomputer than this one.
(Vii) Shaheen II
This supercomputer is located at the King Abdullah University of Science and Technology in Saudi Arabia, and is the newest amongst the top 10, having gone live in 2015.
(viii) Stampede
This one is located within the Texas Advanced Computing Center in the US.
(ix) Juqueen
This supercomputer, which is found in Germany, is Europe’s second to make the list of Top 10. It is located within Forschungszentrum Juelich.
(x) Vulcan
This is a US supercomputer located within the Lawrence Livermore National Laboratory.
Source: c program learning by Darrel L. Graham