What Linus Torvalds really thinks about ARM processors

STEVEN J. VAUGHAN-NICHOLS | February 25, 2019

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In a relatively obscure processor web forum, Real World Technologies, Linus Torvalds shared his thoughts on why x86 took over the server market and ARM is unlikely to be as successful.  A few people immediately thought Torvalds was saying you should forget about ARM in servers. That's not what he said.First, Torvalds explained why he doesn't think cross-platform CPU development, such as that between x86 and ARM, works well. "I can pretty much guarantee that as long as everybody does cross-development, the platform won't be all that stable." He went on: Some people think that "the cloud" means that the instruction set doesn't matter. Develop at home, deploy in the cloud. That's bull***t. If you develop on x86, then you're going to want to deploy on x86, because you'll be able to run what you test "at home" (and by "at home" I don't mean literally in your home, but in your work environment.Which means that you'll happily pay a bit more for x86 cloud hosting, simply because it matches what you can test on your own local setup, and the errors you get will translate better.

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