this post was submitted on 15 Nov 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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This looks impressive for Linux, and I’m glad FLOSS has such an impact! However, I wonder if the numbers are still this good if you consider more supercomputers. Maybe not. Or maybe yes! We’d have to see the evidence.
There's no reason to believe smaller supercomputers would have significantly different OS's.
At some point you enter the realm of mainframes and servers.
Mainframes almost all run Linux now, the last Unix's are close to EOL.
Servers have about a 75% Linux market share, with the rest mostly running Windows and some BSD.
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 my impression is 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.