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Torvalds on Where Linux is Headed in 2008
Stony Stevenson writes "In an interview at the ITNews site, Linus Torvalds lays out his current excitement about the future of Linux. Torvalds is looking forward to hardware elements like solid-state drives, expects progress in graphics and wireless networking, and says the operating system is strong in virtualisation despite his personal lack of interest in the area. 'When you buy an OS from Microsoft, not only you can't fix it, but it has had years of being skewed by one single entity's sense of the market. It doesn't matter how competent Microsoft — or any individual company — is, it's going to reflect that fact. In contrast, look at where Linux is used. Everything from cellphones and other small embedded computers that people wouldn't even think of as computers, to the bulk of the biggest machines on the supercomputer Top-500 list. That is flexibility.'"
Not strictly true...
The same Linux kernel, admittedly often configured in different ways and with different userland apps, runs on all these devices...
The mobile versions of windows are completely different, and have very little in common with the desktop and server versions.
I have a Nokia N800, which runs an embedded linux, i can compile all the same programs i use on my desktop linux machines. Even if you have the source, it's not easy to just recompile a windows program to run on windows mobile, and most programs dont come with source anyway.
As for supercomputers, windows is pretty laughable in this area, it's only used in fairly low end clusters and is horribly inefficient (all your cluster nodes need a videocard and local hd?), most of the serious supercomputers are running linux these days. As for performance, last time i saw a windows cluster in the top500 it consisted of 660 2.8ghz dual cpu dell poweredge servers, a machine using 600 dual cpu 2.8ghz poweredge servers of the same model and running linux was 50 places higher.
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I haven't been able to find information on the smallest Windows CE system, but Linux has been stuffed on a wristwatch with only 19MHz of CPU power and 8M of RAM.
So I guess Linus' point is that Linux runs a greater range of systems, from the top supercomputers in the world (the top ten all run Linux), to the very smallest of devices. Windows doesn't scale quite as well.