[OT] Maximum performance on single processor ?

Mike Eggleston mikee at mikee.ath.cx
Fri Jun 20 10:57:32 EDT 2003


On Fri, 20 Jun 2003, Marc Baaden wrote:

> 
> Thanks for all your comments and suggestions. I realize (and some
> of you mentioned it) that you need more information to understand
> better what I am looking for.
> 
> I have an existing application which is part of a project. I have
> the source code. It is Fortran. It *can* be parallelized, but we
> would rather spend our time on the other parts of the project
> which need to be written from scratch *first*.
> 
> The application is to run in real time, that is the user does something
> and as a function of user input and the calculation with the fortran
> program that I described, there is a correponding feedback to the
> user on the screen (and in some Virtual Reality equipment).
> 
> Right now, even on simple test cases, the "response time" (eg calculation
> time for a single step) of our program is on the order of the second.
> (this is for an athlon MP 2600+)
> We need to get that down to a fraction of seconds, best milli-seconds,
> in order to be usable in real time. (makes it a factor of roughly 1000)
> 
> As I said the code can indeed be parallelized - maybe even simply cleaned
> up in some parts - but unfortunately there remains very much other important
> stuff to do. So we'd rather spend some money on a really fast CPU and not
> touch the code at the moment.
> 
> So my question was more, what is the fastest CPU I can get for $20000
> at the moment (without explicitly parallelizing, hyperthreading or
> vectorizing my code).

Can the lisp technique of memoization help with your processing?

Mike
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