Turns out bigger isn't always better
On paper, the potential for massive 512-bit vector registers to accelerate workloads was substantial, but taking advantage of them, especially in the early days, came with some hefty concessions.
"That gave it sort of a black eye of 'Hey, if I use AVX-512, I'm gonna have this big frequency drop, so I can't use it'," Intel Fellow Ronak Singhal told."We've spent a lot of effort on making sure that that really goes away as a barrier to adoption." Another recent inclusion to the AVX-512 spec was support for FP16 and bfloat 16 math. This functionalityThese are only available if you are using AVX-512. And this means that even if you don't care about the wider register width, if you want to take advantage of any of these features, you have to use AVX-512, Singhal explained.This is one of the problems that AVX10 seeks to address.
Under the new spec, AVX10 compatible chips will, for the most part, share a common feature set — including 32 registers, k-masks, FP16 support — and minimally support 256 bit wide registers.
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