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Subject: Re: flopteron seems quite miserable at chess as well!

Author: Bo Persson

Date: 06:07:00 08/02/03

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On August 01, 2003 at 18:18:11, Russell Reagan wrote:

>On August 01, 2003 at 17:52:19, Tom Kerrigan wrote:
>
>>Maybe I've forgotten how to count, but it seems like "Flopteron" is running
>>faster than everything else except the AXP 3k+. And this is only at 1.8ghz. It's
>>expected to scale to 2.6ghz with AMD's current 0.13um process.
>
>1210 * (2.6 / 1.8) = 1748
>
>I wonder if this is even using a 64-bit executable.

No it's not. Even without a crappy translator, I get "Dazu verwenden wir Intel
C++ 7.0 und MS Visual Studio für alle Integer-Tests" to mean Intel and MS 32-bit
compilers.  :-)

A bit further down my ancient school-german decodes the text as saying that
using P4 optimization didn't help much for Opterons. Might have helped some for
the P4 though:-)

They also suspect the P4's DDR400 memory gave some additional advantage, and
could explain why it betas the Xeons.

>Doubtful (I didn't see
>anything to indicate it, even with a choppy web translator). Regardless, 1748
>blows everything else out of the water. Maybe 64-bit Crafty on an Opteron 2.6GHz
>will be twice as fast as the Xeon 3.06 GHz. It only needs a 35% increase from a
>64-bit compiler.

Crafty is, of course, one of the programs that is already designed to take
advantage of 64 bit systems. Hope MS decides to release the Opteron version of
their 64 bit compiler soon!



Bo Persson
bop2@telia.com





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