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Re:All 500 of the world's top 500 supercomputers are running... by martinpw on Wednesday November 15, 2017 @08:05PM (#15709494)
If you go here:

https://www.top500.org/statistics/overtime/

Then select "Operating System" and submit, you can see the OSs that used to be run on systems over the past 10 years.

Re:All 500 of the world's top 500 supercomputers are running... by rootbear on Thursday November 16, 2017 @10:52AM (#15713640)
Nice chart! The speed with which Linux supplanted proprietary Unix systems is remarkable.

It would be interesting to know what version of Linux is used most often on current supercomputers. The supercomputer here at Goddard runs SLES (Suse) and I believe other NASA supercomputers run that as well.