By: David Hess (davidwhess.delete@this.gmail.com), November 18, 2020 1:12 pm
Room: Moderated Discussions
Maynard Handley (name99.delete@this.name99.org) on November 18, 2020 8:37 am wrote:
>
> SMT is a decision to swap something that is cheap and plentiful (space for an *independent*
> core on the die) with something that is expensive and in extremely short supply (the SRAM
> that feeds the predictors and caches that give you all that IPC for a particular core).
>
> Explain to me why that is a sensible tradeoff...
SMT is a decision to swap something that is expensive and in extremely short supply (power hungry logic) with something that is cheap and plentiful (low power SRAM and state).
>
> SMT is a decision to swap something that is cheap and plentiful (space for an *independent*
> core on the die) with something that is expensive and in extremely short supply (the SRAM
> that feeds the predictors and caches that give you all that IPC for a particular core).
>
> Explain to me why that is a sensible tradeoff...
SMT is a decision to swap something that is expensive and in extremely short supply (power hungry logic) with something that is cheap and plentiful (low power SRAM and state).
