By: Maynard Handley (name99.delete@this.name99.org), May 14, 2013 5:02 pm
Room: Moderated Discussions
RichardC (tich.delete@this.pobox.com) on May 14, 2013 1:09 pm wrote:
> Ricardo B (ricardo.b.delete@this.xxxxx.xx) on May 14, 2013 12:50 pm wrote:
>
> > So, the question remains: which are the common applications that make you want to spend every
> > last bit of CPU transistor budget on single thread performance and cleave SMT away?
>
> I answered that upthread: give me a 4C/4T (or maybe even a 3C/3T) that is
> blindingly fast for rendering web pages, text editing, word processing, and
> moving windows around. [And put it together with an SSD, a fast network, and
> a couple of 2560x1440 monitors].
>
You seem to be under the delusion that it would be trivial to run cores at 4x their current frequency, or to triple their IPC, if we only got rid of that damn SMT.
Please explain EXACTLY how this will happen --- something a little more sophisticated than "well, you get rid of these buffers and those interlocks, voila, you have an 8GHz CPU".
Simply whining that current CPUs don't run single-threaded code fast enough is not helpful --- we all wish the single-threaded performance of CPUs were faster.
Claiming that this single-threaded performance is the fault of that villain SMT is even more foolish --- not just a time-wasting cri de coeur but the actual dissemination of laughably false information.
> Ricardo B (ricardo.b.delete@this.xxxxx.xx) on May 14, 2013 12:50 pm wrote:
>
> > So, the question remains: which are the common applications that make you want to spend every
> > last bit of CPU transistor budget on single thread performance and cleave SMT away?
>
> I answered that upthread: give me a 4C/4T (or maybe even a 3C/3T) that is
> blindingly fast for rendering web pages, text editing, word processing, and
> moving windows around. [And put it together with an SSD, a fast network, and
> a couple of 2560x1440 monitors].
>
You seem to be under the delusion that it would be trivial to run cores at 4x their current frequency, or to triple their IPC, if we only got rid of that damn SMT.
Please explain EXACTLY how this will happen --- something a little more sophisticated than "well, you get rid of these buffers and those interlocks, voila, you have an 8GHz CPU".
Simply whining that current CPUs don't run single-threaded code fast enough is not helpful --- we all wish the single-threaded performance of CPUs were faster.
Claiming that this single-threaded performance is the fault of that villain SMT is even more foolish --- not just a time-wasting cri de coeur but the actual dissemination of laughably false information.