The list is being dominated by the United States, China, Japan, the United Kingdom, Germany and France, and India. The two supercomputers from India belong to Tata’s Computational Research Laboratories and the Indian Institute of Tropical Meteorology. Whereas in November 2010 list, there were 4 Indian systems including the systems developed by the Centre for Development of Advanced Computing(C-DAC) and the Indian Government.
It was in 2006 that the maximum number of supercomputers from India made to the list – 11 in June and 10 in November. Then, India ranked 6th in terms of the supercomputing power; this november it was placed 5th from the bottom in a list of 27 countries. Japan’s K Computer with a speed of 10.5 petaflops has been ranked first in the November list. In comparsion, the Tata supercomputer, ranked 85th has a maximum computational speed of 132.8 teraflops.