Linux

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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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OS market share in Top 500 supercomputers (feddit.org)

submitted 1 month ago* (last edited 1 month ago) by superkret@feddit.org to c/linux@lemmy.ml

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Source: https://en.wikipedia.org/wiki/Supercomputer_operating_system
Author: https://commons.m.wikimedia.org/wiki/User:Benedikt.Seidl
Data from: http://top500.org/stats

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[–] superkret@feddit.org 24 points 1 month ago* (last edited 1 month ago) (2 children)

You mean the NA/Mixed category?
Probably mostly z/OS and BS2000

[–] ComradeMiao@lemmy.world 4 points 1 month ago

Thanks for the links!

[–] BallsandBayonets@lemmings.world 4 points 1 month ago (2 children)

How can there be N/A though? How can any functional computer not have an operating system? Or is just reading the really big MHz number of the CPU count as it being a supercomputer?

[–] superkret@feddit.org 6 points 1 month ago

Early computers didn't have operating systems.
You just plugged in a punch card or tape with the program you want to run and the computer executed those exact instructions and nothing else.
Those programs were specifically written for that exact hardware (not even for that model, but for that machine).
To boot up the computer, you had to put a number of switches into the correct position (0 or 1), to bring its registers in the correct state to accept programs.

So you were the BIOS and bootloader, and there was no need for an OS because the userspace programs told the CPU directly what bits to flip.

[–] sep@lemmy.world 2 points 1 month ago

They ofcouse had one, probably linux, or unix. But that information, about the cluster, is not available.