AS technologies: hyperthreading, overclocking and vector extension

[pappkristof]

Hi!

I was wondering if Apple CPUs (A series) already support these technologies?

Which do you think will be included in AS Macs?

 

[jdb8167]

Hyperthreading is a hack to fix problems with stalls in the pipeline in Intel's architecture. It isn't necessarily useful for other architectures. We'll have to wait and see what kind of multi-threading performance we get from ASi.

Vector extensions already exist for the ARM ISA. Please read this expert's opinion on Intel's most extreme vector subsystem: Linus Torvalds "I hope AVX512 dies a painful death"

It is unlikely that Apple will have any special designation for overclocking CPUs.

 

[leman]

Apple chips have vector Instructions (with each A13 core capable of processing 3 128 vectors simultaneously) as well as dynamic overclocking (aka. Turbo Boost). They do not support hyperthreading.

I would expect AS Macs to support SVE (scalable vector extensions). I don’t expect any support for hyperthreadin, as I don’t think an architecture as superscalar as AS needs it to achieve good execution unit utilization.