And a few years later, Intel said we'd get AVX512 on everything by 2016, and that the instruction encoding supported a future extension to 1024.
And then the Skylake and Cannon Lake debacle..
First they pulled it from the consumer chips a fairly short time before launch. Then the server chips it was present in would downclock aggressively when you did use it, so you could get at best maybe 40% more performance, certainly far from the 2x+ it promised.
Ten years on and the AMD 9950X does a pretty good job with it, however.
Oh, and I neglected to mention the protracted development, and short, miserable life, of Cannon Lake itself.
First announced in 2013, it eventually shipped five years later in only a single, crippled dual-core mobile SKU, which lasted just a year in the market before they killed it off.
"Let's put our only consumer implementation of our highest performing vector architecture on a lame-duck NUC chip.", good move guys.
I mean, 288-E Core Xeons are about to ship. Xeon 6900 series, right? (Estimated to ship in Q1 2025)
So Larrabee lives on for... some reason. These E cores are well known to be modified Intel Atom cores and those were modified Xeon Phi cores which were Larrabee based.
Just with.... AVX512 being disabled. (Lost when Xeon Phi turned into Intel Atoms).
Intels technical strategy is completely bonkers. In a bad way. Intel invented all this tech 10 to 20 years ago but fails to have a cohesive strategy to bring it to market. There's clearly smart people there but somehow all the top level decisions are just awful
Ironically, AMD waited so long to implement AVX-512, but now has it on both server and mobile chips (natively and 256 bit emulation, respectively). Intel started the whole thing, has a very fragmented stack and is now preparing those E cores with even more new extensions.
Would be interesting to see how matrix multiplication throughput will differ between AVX-512-capable P cores and a larger quantity of AVX_VNNI-capable E cores!
And then the Skylake and Cannon Lake debacle..
First they pulled it from the consumer chips a fairly short time before launch. Then the server chips it was present in would downclock aggressively when you did use it, so you could get at best maybe 40% more performance, certainly far from the 2x+ it promised.
Ten years on and the AMD 9950X does a pretty good job with it, however.