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Subject: Re: Pentium 4 optimized Crafty (& Tbird) -- What did you expect?

Author: Gregor Overney

Date: 16:07:04 09/26/01

Go up one level in this thread


On September 26, 2001 at 18:11:42, Slater Wold wrote:

>On September 26, 2001 at 17:41:22, Koundinya Veluri wrote:
>
>>On September 26, 2001 at 17:40:22, Koundinya Veluri wrote:
>>
>>>On September 26, 2001 at 16:46:23, Aaron Gordon wrote:
>>>
>>>>Ok, I just managed to get Crafty compiled (and profiled) for the Pentium 4, I
>>>>haven't tested it as I don't have access to a Pentium 4 but definately let me
>>>>know how it does compared to a standard exe. I would appreciate it.  You can
>>>>download it at:
>>>>
>>>>ftp://65.10.79.9/pub/crafty/CraftyP4.zip
>>>>
>>>>AMD Athlon(Tbird,Duron, Palomino, etc) Optimized Crafty v18.10 (Has SMP support)
>>>>ftp://65.10.79.9/pub/crafty/CraftyK7-1810.zip
>>>>
>>>>AMD Athlon(Tbird,Duron, Palomino, etc) Optimized Crafty v18.11 (Single CPU)
>>>>ftp://65.10.79.9/pub/crafty/CraftyK7-1811.zip
>>>>
>>>>AMD Athlon(Tbird,Duron, Palomino, etc) Optimized Crafty v18.11 (Has SMP support)
>>>>ftp://65.10.79.9/pub/crafty/CraftyK7-1811-SMP.zip
>>>>
>>>>Again, P4 benchmarks would be appreciated. Thanks.
>>>>
>>>>Here's my result to compare to (Tbird 1677MHz)
>>>>Crafty 18.10
>>>>Total nodes: 101850052
>>>>Raw nodes per second: 1018500
>>>>Total elapsed time: 100
>>>>SMP time-to-ply measurement: 6.400000
>>>
>>>Sorry for the version differences. I hope it doesn't make a difference.
>>>
>>>48 MB hash, 2.5 MB pawn hash
>>
>>P4 1.7 Ghz, 256 MB ram
>>
>>>
>>>Crafty 18.10 benchmark:
>>>
>>>Total nodes: 94500755
>>>Raw nodes per second: 665498
>>>Total elapsed time: 142
>>>SMP time-to-ply measurement: 4.507042
>>>
>>>CraftyP4 18.11 benchmark:
>>>
>>>Total nodes: 93487314
>>>Raw nodes per second: 687406
>>>Total elapsed time: 136
>>>SMP time-to-ply measurement: 4.705882
>>>
>>>Koundinya
>
>I know someone with a PIII 550mhz with Aaron's optimzed P4 Crafty, that gets a
>little over 600k nps.
>
>No offense to you at all, but those numbers are sad.
>
>
>Slate

Not "sad" but in perfect agreement with SpecInt2000 (see www.spec.org). No
surprises. A P4 is as fast as it can get when Intel tries to tweak the numbers
for their crafty benchmark for SpecInt2000. A $120 Athlon 1.4 GHz outperforms a
$600 P4 quite easily (around 10% difference).

Is it a surprise? No. I think the architecture of the Athlon is just a little
bit more suitable for real-world problems. Intel has to rethink their design for
their P4 quite a bit. Crafty seems to be a good addition to SpecInt. But I guess
that the "influence" of Intel might soon remove Crafty from this benchmark suite
;-)

Why did Gateway stop selling Athlon? Why did Compaq abandon Alpha? It appears
that those decisions are not really helping to provide better hardware for
computer chess.

Gregor



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