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Subject: Re: Deep Sjeng Opteron Performance Results

Author: Gian-Carlo Pascutto

Date: 05:23:26 08/07/03

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On August 07, 2003 at 07:42:22, Joost Buijs wrote:

>I don't understand where you get your specdata from.
>According to spec.org it looks like this:
>
>SPECint 2000 uni processor:
>
>Xeon 3.06 GHz.          1294
>Opteron 1800 Mhz.       1170
>Athlon XP 2200+         1080

I've been quoting clock for clock performance throughout the thread (using
1.8Ghz baselines), not the raw scores, mostly because the 2.0Ghz Opteron
is available but not SPEC tested yet.

From eyeballing the result, it seems the numbers you quote agree with
me that the 2.0Ghz Opteron is faster than anything else.

Note that the Opteron number you quote is Intel C in 32 bit mode on Windows.
This seems to be faster than a native GCC 3 (they don't give the exact version
unfortunately) compile. Amazing - this means there is still a lot of room for
further improvement as the compiler gets better. I used the native GCC
compile numbers.

The Pentium 4 was in a similar situation with Intel C 6 and 7 giving a
big performance boost to some programs (You can also see this in the SPEC
results). Unfortunately I haven't seen a single version so far that doesn't
crash when compiling Deep Sjeng, so those numbers mean very little to me.
GCC 3.2.2 on the other hand gives the exact same results in 32 bit Athlon
vs the 64 bit Opteron versions - no bugs there!

--
GCP



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