The world’s fastest supercomputer is the US Department of Energy’s Sequoia system, installed at the Lawrence Livermore National Laboratory.
http://www.electronicsweekly.com/Articles/25/06/2012/53974/top-supercomputers-revealed.htm
Sequoia is an IBM BlueGene/Q system with 1,572,864 cores. Sequoia uses IBM’s 18 core 64bit Power Architecture processor and runs Linux.
The Top500 Supercomputer list has Linux running 457 out of 500 of the world’s fastest computers.
Windows may rule the desktop market and Apple rules the tablet market but Linux rules the supercomputer market. 🙂
Regards,
Roger Lacroix
Capitalware Inc.