Speculative execution seems to be an unending source of woes, especially for Intel (but not just them.) Not all that surprising considering how hard it is to not leak eg. timing information accidentally, but you’d sort of expect that CPU manufacturers would have learned from the N+1 previous speculative execution vulnerabilities. Then again, they’re in the business of making faster CPUs, so it’s not like they’ll just swear off speculation forever
Zen blead and now this? Why is SIMD so hard? All you have to do is add a wide ALU to process more data at once.
All you have to do is add a wide ALU to process more data at once.
Oh that’s all? 😄
People just generally don’t understand design or manufacturing at all it might as well be magic to the layman “all you gotta do is…” yeah sure that would make a better product in absolute quality terms, if it’s possible at all, but you have to balance it against 100 other things.
There’s a reason there are rooms full of relatively high paid individuals with fancy degrees or decades of experience.
And speculative execution is the stuff you do on top of your fancy ALU to make sure you waste less time – so it’s not like we haven’t already tried the simple idea, but that we’ve moved on from it
