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{{As of|2018|January}}, 500 or 100%<ref>{{Cite news|url=https://www.zdnet.com/article/linux-totally-dominates-supercomputers/|title=Linux totally dominates supercomputers {{!}} ZDNet|last=Vaughan-Nichols|first=Steven J.|work=ZDNet|access-date=2018-04-10|language=en}}</ref> of the world's fastest supercomputers run an operating system based on the Linux kernel. The world’s fastest supercomputer is China’s [[Sunway TaihuLight]], is powered by a colossal 650,000+ CPUs, runs a customised version of Linux called ‘Sunway RaiseOS’, with processing speed of 93 petaflops.<ref>{{Cite news|url=https://www.omgubuntu.co.uk/2017/11/linux-now-powers-100-worlds-top-500-supercomputers|title=Linux Now Powers 100% of the World's Top 500 Supercomputers|date=2017-11-14|work=OMG! Ubuntu!|access-date=2018-04-10|language=en-US}}</ref>
{{As of|2014|November}}, 485 or 97% of the world's fastest supercomputers run an operating system based on the Linux kernel; this percentage also translates to over 98% of the total core count or overall performance. Remaining 3% run some Unix variant (which is [[IBM AIX|AIX]] for all of them except one), with one supercomputer running Windows and one with a "mixed" <!--Seems to be this "Cell OS" at nr 81, that is probably Linux: http://www.top500.org/system/178469
they also have this one nr. 390 (same one, another config?):
http://www.top500.org/system/178470
http://www.hpctoday.eu/wire/rsc-creates-1-1-pflops-supercomputer-for-st-petersburg-state-polytechnical-university-on-the-basis-of-newest-intel-xeon-e5-2600-v3-processor-and-intel-xeon-phitm-coprocessor/
http://www.hpcwire.com/off-the-wire/rsc-group-announces-new-record-set-petastream-system/
some other trivia:
http://www.networkworld.com/article/2227736/microsoft-subnet/microsoft-breaks-petaflop-barrier--loses-top-500-spot-to-linux.html
http://www.networkworld.com/article/2227782/microsoft-subnet/software-bug-derailed-windows-bid-to-top-linux-in-supercomputing-speed.html
New Linux in nr. 10 http://www.top500.org/system/178445
--> operating system.<ref name=top500stats>{{cite web|title=Top500 - List Statistics - November 2014|url=http://www.top500.org/statistics/list/|publisher=Top500.org|accessdate=17 November 2014}}</ref> Within those 97% are the most powerful supercomputers including those ranking as the top ten.
Since November 2014,<!-- may have gotten bigger but not bothered to get reevaluated for list? Would it still make the list? "Faenov" 2012/11: nr.165, 2014/06: nr.434--> [[Windows Azure]]<ref>{{cite web|url=http://www.top500.org/site/50454|title=Microsoft Windows Azure|publisher=}}</ref> cloud computer is no longer on the list of fastest supercomputers (its best rank was 165 in 2012), leaving the Shanghai Supercomputer Center's "Magic Cube" as the only Windows-based supercomputer, running [[Windows HPC 2008]] and ranked 360 (its best rank was 11 in 2008).<ref>{{cite web|url=http://www.top500.org/system/176118|title=Magic Cube - Dawning 5000A, QC Opteron 1.9 GHz, Infiniband, Windows HPC 2008|publisher=}}</ref>
==References==
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