[RC5] 999 to 1000 blocks and P5: MMX vs Classic

ANDREWS,MATTHEW BRUCE andrewsm at ufl.edu
Sun Jan 11 21:16:20 EST 2004

As far as I know, there is no MMX core for RC5-72.  Back in the 
days of RC5-64 there were a lot more Pentium 1 MMX's around, but 
now there probably isn't much demand for an MMX core.

On Sun Jan 11 15:34:17 EST 2004, =?iso-8859-1?Q?Nuno_Louren=E7o?= 
<nunol27 at sapo.pt> wrote:

> Hi.
> 999 to 1000 blocks
> I don't understand why the client can't go from 999 to 1000 
> blocks in the in
> file when fetching and in the out file when writing a worked 
> block. It
> doesn't have that problem with the "-import" and "-update" 
> command (using a
> alternate-buffer-directory). I am using the dnetc 
> v2.9005-483-GTR-03033119
> for Win32 client and Win XP Pro.
> P5: MMX vs Classic
> The latest distribudet.net client's for RC5-64 had diferent cores 
> for
> Pentium MMX and Pentium Classic, and the MMX core was about 50% 
> faster than
> a Pentium Classic at the same MHz. Recently,  I decided do run 
> the
> distributed.net client for RC5-72 on one Pentium MMX and two 2 
> Pentium
> Classic and found out that they had the same key rate per MHz 
> (and were
> running the same core I think). Why did the Pentium MMX lose de 
> +50% per MHz
> speed advantage on the shift from RC5-64 to RC5-72?
> Thanks,
> Nuno Lourenço
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