'21 processing speeds

[mwalker@xxxxxxxxxxxxxxxxxxxx]

Jeff Fox writes:
>Dear MISC readers:
>No, P21Forth will not run this benchmark in 2 seconds even with high
>speed sram and no video output.  P21Forth would have to be rewritten
>to take advantage of the high speed sram, and with this mod only and
>no video output it could run about three times faster. ie. 10 seconds.

>[Helpful (and appreciated) discussion and benchmarks abridged...]

>P.S.
>As for Mark's "there is no such thing as fast enough"           
>My real interest is in F21.  With a 3 time faster processor clock,

Actually, I had decided to sit tight for the F21's debut, but got
(re)excited by recent postings... didn't mean to introduce any negative
vibes into the MISC forum, and if I did, I apologize.

>bigger high speed sram interface, and deeper stacks it is very easy
>to implement optiminzing native code compilers that will generate
>much fast code.  A minimum of an order of magnitude of speed improvement
>over P21 will be available.  With a good optimizing compiler a
>couple of orders of magnitude can be achieved in many cases.  Since
>F21 is designed for multiprocessing, it will possible to get another
>order of magnitude or two in speedup on many problems.  3D projections
>are a good example of where there is a lot of natural parallelism as
>you compute many frames in sequence (normally).

>So what would you say to four order of magnitude speedup over P21?

See my sig!  8^)

>We are about to submit the first F21 prototype.  I will soon be posting
>the details of the design.

Good luck, and thanks!

--
Mark Walker                     UNM/EECE, 7-3688, mwalker@eece.unm.edu

           "Enough is enough; and too much is just right!"