I wonder if the numbers are still this good if you consider more supercomputers.
Great question. My guess is not terribly different.
“Top 500 Supercomputers” is arguably a self-referential term. I’ve seen the term “super-computer” defined whether it was among the 500 fastest computer in the world, on the day it went live.
As new super-computers come online, workloads from older ones tend to migrate to the new ones.
So there usually aren’t a huge number of currently operating supercomputers outside of the top 500.
When a super-computer falls toward the bottom of the top 500, there’s a good chance it is getting turned off soon.
That said, I’m referring here only to the super-computers that spend a lot of time advertising their existence.
I suspect there’s a decent number out there today that prefer not to be listed. But I have no reason to think those don’t also run Linux.
“Tres Comas is for winners.” (A wonderful line delivery by the huge asshole venture fund bro in Silicon Valley, that illustrates your point)