(j3.2006) Is Moore's law over?

[Dan Nagle]

Hello,

On Aug 21, 2008, at 8:38 PM, Van Snyder wrote:
>
> We're thinking about DSP/GPU coprocessors for these two subproblems,  
> but
> then there's the rest....
>
> There isn't much of our program of the form "do n**3 things on n**2
> data."  Mostly (82% or so) it's "do n things on n data."  That is,  
> it's
> mostly memory-bandwidth limited, not cache- or processor-bandwidth
> limited.


If you're bandwidth limited, there's absolutely *no way* in silicon
that a DSP/GPU can save you.  The big problem with them is their
load and unload bandwidths.

Game over.  Insert 25 cents.  ;-)

It appears that Actual Thought will be required.

-- 
Cheers!

Dan Nagle