[RC5] G4 benchmarks

Eno Jon enojon at delphi.com
Sat Oct 30 00:48:23 EDT 1999


Dave Avery wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
>
> On Thu, 28 Oct 1999 13:26:26 -0400, Joe Kazura wrote:
>
> >The code needs to be updated on RC5 to be 128-bit and to use the
> >Altivec instruction set.
> >
> >The current BETA client of RC5 gives about the same for a G4 @ 450Mhz
> >as it does for a G3 @ 450 Mhz.
> >
>
> that sounds nice, except rc5 is a purely 32 bit algorithm, so going 64 or 128 bits
> does not help ( it uses lots of 32 bit rotates),
>
> and the cores are available at http://www.distributed.net/source/ for anyone who
> wants to try and create a Altivec core
>
> dave
> *************
> Dave Avery                                       daa at distributed.net
> distributed .net                                  Coder Coordinator
>

Aren't some vector architectures capable of rendering the v-regs as 32-bit?
Maybe I just thought I saw Vector Engine /Altivec as capable of being 4-byte
addressable.


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