And you know it needs a well-conceived OS to be able to run it: it's got to be... Microsoft Windows right?

The OS powering 0% of the 500 supercomputers of the Top 500. But this time, it has to be Windows, right? Amirite?

Ah, no, just kidding: it's "Kylin OS". It used to be a BSD derivative and now it's just based on Linux.

I know, I know: "It's a heavily modified Linux". Whatever, it's not Windows and that makes me very happy.