By: EBFE (x.delete@this.y.com), August 12, 2012 10:02 pm
Room: Moderated Discussions
David Kanter (dkanter.delete@this.realworldtech.com) on August 11, 2012 9:25 pm wrote:
> jp (jasdfasdf.delete@this.gmail.com) on August 11, 2012 1:21 pm wrote:
> >
> David Kanter (dkanter.delete@this.realworldtech.com) on July 25, 2012 1:37 am
>
> > wrote:
> > > New computational efficiency data shows GPUs with a
> clear edge over
> > CPUs, but
> > > the gap is narrowing as CPUs adopt
> wide vectors (e.g. AVX).
> > Surprisingly, a
> > > throughput CPU is
> the most energy efficient processor,
> > offering hope for future
> > >
> architectures. Our data also shows some
> > advantages of AMD's Bulldozer,
> and the
> > > overhead associated with highly
> > scalable server
> CPUs.
> > >
> > > Comments and feedback
> > > welcome!
> >
> >
> >
> > > David
> >
> > Nvidia claims that GK110 (K20) will
> have a 3x improvement in DP
> > performance, see first
> > slide:
> >
> http://www.brightsideofnews.com/news/2012/8/9/can-the-new-nvidia-quadro-
> >
> k5000-become-the-most-profitable-graphics-card.aspx
> >
> > That would mean
> 3x665 DP
> > GFLOPS (M2090) => 1.995 TFLOP DP, which sounds almost too
> good to be true and
> > would require a frequency of roughly 1
> Ghz...
>
> Honestly I would expect around 1.3 TFLOP/s. But the real question is
> at what cost in terms of power?
>
> Achieving 2 TFLOP/s might be feasible, but
> within 300W? That seems unlikely.
>
> David
Speaking of power, SP vs. DP which you think consumes more power?
Could Kepler turbo on DP?
K10 is 745MHz/112.5W, x2880/1536=211W, x1.5T/(2*960*745M)=221W
I guess that big-K at 4.5T/1.5T is plausible at 1.8T/300W.
> jp (jasdfasdf.delete@this.gmail.com) on August 11, 2012 1:21 pm wrote:
> >
> David Kanter (dkanter.delete@this.realworldtech.com) on July 25, 2012 1:37 am
>
> > wrote:
> > > New computational efficiency data shows GPUs with a
> clear edge over
> > CPUs, but
> > > the gap is narrowing as CPUs adopt
> wide vectors (e.g. AVX).
> > Surprisingly, a
> > > throughput CPU is
> the most energy efficient processor,
> > offering hope for future
> > >
> architectures. Our data also shows some
> > advantages of AMD's Bulldozer,
> and the
> > > overhead associated with highly
> > scalable server
> CPUs.
> > >
> > > Comments and feedback
> > > welcome!
> >
> >
> >
> > > David
> >
> > Nvidia claims that GK110 (K20) will
> have a 3x improvement in DP
> > performance, see first
> > slide:
> >
> http://www.brightsideofnews.com/news/2012/8/9/can-the-new-nvidia-quadro-
> >
> k5000-become-the-most-profitable-graphics-card.aspx
> >
> > That would mean
> 3x665 DP
> > GFLOPS (M2090) => 1.995 TFLOP DP, which sounds almost too
> good to be true and
> > would require a frequency of roughly 1
> Ghz...
>
> Honestly I would expect around 1.3 TFLOP/s. But the real question is
> at what cost in terms of power?
>
> Achieving 2 TFLOP/s might be feasible, but
> within 300W? That seems unlikely.
>
> David
Speaking of power, SP vs. DP which you think consumes more power?
Could Kepler turbo on DP?
K10 is 745MHz/112.5W, x2880/1536=211W, x1.5T/(2*960*745M)=221W
I guess that big-K at 4.5T/1.5T is plausible at 1.8T/300W.
