I read this and am really confused why Intel would design the CPU in such a way that all this is even a concernhttps://twitter.com/lemire/status/987058338125971456 …
Maybe then. But can it even perform significantly better once you take into account the P-states?
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Yes. Hugely better.
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Keep in mind that 256b vector ops *also* move you down the turbo schedule, so you’re not comparing against max freq. Dip from 256-512 varies with stepping and
#cores active, but nowhere near 1/2 speed. -
this sucks and i am so glad i don't write compiler backends
End of conversation
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