Re:Testing AMD's Bergamo: Zen 4c
by ajross on Saturday June 22, 2024 @07:59PM
(#40763376)
> with many-core, having to budget decoder silicon/power might start to matter enough
That seems backwards to me. Narrower, simpler cores with fewer execution engines have a much easier time decoding. It's the combinatorics of x86's variable length instructions and prefix coding that makes wide decoders superlinearly expensive.
That seems backwards to me. Narrower, simpler cores with fewer execution engines have a much easier time decoding. It's the combinatorics of x86's variable length instructions and prefix coding that makes wide decoders superlinearly expensive.