Re: 3dnow

[Peter Soendergaard <soender@cs.utk.edu>]

To the masses? I thought I was the only person still owning one!
Seriously, this is actually a nice platform to test. It has some of the
same weaknesses as the Athlon has with repect to code alignment, and since
the 3dnow unit is a completely different unit than the floating point
unit, I get 6 fold speedup using 3dnow. I go from 83 mflops with x87 code
to 470 mflops using 3dnow! So this is perfect for testing the influence of
cleanup code, since the cleanup code generated by Atlas will suck!
compared to the 3dnow! code.

Cheers,

Peter
On 26 Jun 2001, Camm Maguire wrote:

> Thanks Peter!  Nice to here your benching these on the k6 as well.
> Numerical computing for the masses!
>
> Peter Soendergaard <soender@cs.utk.edu> writes:
>
> > Hi Camm,
> >
> > No it only uses 3dnow1 instructions, so you can run everything on a K6-2
> > if you want to (I do). The only usefull thing from 3dnow2 that I have
> > found is the SSE compliant prefetching.
> >
> > Cheers,
> >
> > Peter.
> >
> > On 25 Jun 2001, Camm Maguire wrote:
> >
> > >
> > > Greetings!  Does the 3dnow in 3.2.1 use any 3dnow2 instructions, or is
> > > it completely 3dnow1 compliant?
> > >
> > > Thanks!
> > >
> > >
> > > --
> > > Camm Maguire			     			camm@enhanced.com
> > > ==========================================================================
> > > "The earth is but one country, and mankind its citizens."  --  Baha'u'llah
> > >
> >
> >
> >
>
>