[Libre-soc-misc] Vectorization Article

Luke Kenneth Casson Leighton lkcl at lkcl.net
Tue Jun 8 20:34:22 BST 2021

"Since the Xeon Phi is bottlenecked on the instruction decoder it’s
actually faster to load from memory than it is to load an immediate into a
GPR, move this into a XMM register, and then broadcast it out"

oh - this is both hilarious, shocking, and depressing...


On Tue, Jun 8, 2021 at 8:15 PM Jacob Lifshay <programmerjake at gmail.com>

> Found this interesting article on using vectorization to run 4096 32-bit
> VMs on a 64-core Xeon Phi using AVX512:
> https://gamozolabs.github.io/fuzzing/2018/10/14/vectorized_emulation.html
> This is more or less what GPUs do.
> Jacob
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