FCLC
(replying to it's Kanbaru again 🌟)
@hikari yes, many times over!
The per thread addressable register file per core is:
AVX512(f) vector RF 32x512b -> 2 KiB
AVX512(BW) mask RF 8x64b -> .064 KiB
AMX matrix RF 8x8096b -> 8 KiB
APX GPR 32x64b -> .256 KiB
That ignores that current physical register files tend to be between 2-3X the software addressable RF; helps for performance when context switching by not having to pop all of register state to cache
FCLC
(replying to FCLC)
@hikari So roughly 10.3 KiB addressable, ~25 KiB physical.
Assume relatively small server socket at 32C, that’s ~0.8MiB of register file per socket.
