Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Another side point...

Author: Robert Hyatt

Date: 11:58:20 05/24/04

Go up one level in this thread


On May 24, 2004 at 14:10:38, Slater Wold wrote:

>On May 24, 2004 at 12:56:56, Slater Wold wrote:
>
>>On May 24, 2004 at 12:29:04, Russell Reagan wrote:
>>
>>>On May 24, 2004 at 12:06:46, Slater Wold wrote:
>>>
>>>>In a thread below, there is a post about Blargh, ICCs top computer.  It has won
>>>>60% of its games at standard time controls, and only lost 16% in almost 3,000
>>>>games!
>>>>
>>>>I am interested to know the OoO (opinion of outcome) of EVERYONE at the
>>>>following experiment, I will be in contact with the operator of Blargh, and will
>>>>try to set this up.
>>>>
>>>>Crafty 19.13 on an AMD FX53 (64-bit) vs Shredder 8 on a Dual Opteron 2.2Ghz
>>>>(32-bit)
>>>>
>>>>10 game match.  120/0.
>>>>
>>>>Opinions?
>>>
>>>Crafty on equal hardware probably doesn't stand a realistic chance against
>>>Shredder. Only Fritz scores at least 45% against Shredder on the latest SSDF.
>>>Junior and Hiarcs score at least 40%. Crafty would be behind those engines on
>>>equal hardware by a non-trivial margin (take the Junior-Crafty 10x experiment
>>>for example).
>>
>>OoO please...
>>
>>>What is interesting about a Shredder-Crafty match where Crafty is at a hardware
>>>_disadvantage_?
>>>
>>>BTW, that really explains a lot about why he is #1 on ICC. You have a freakin'
>>>FX53 and you're at a hardware disadvantage! Wow...
>>
>>It's a disadvantage, but a small one.  How small?
>>
>>Crafty on a 2.2Ghz Opteron in 32-bit gets about 1.5M NPS.  With a 1.89 speedup,
>>we get 2.8M nps.  My FX53 (64-bit) will do 2.6M.  It's at a 8% HW disadvantage.
>>
>>8% means nothing in a 120/0 game.
>
>Shredder 8 is SMP.  This box is NUMA.  I bet it doesn't get 1.89x.

With a dual processor you can't tell the difference.  From experience.  4-way
begins to be noticable and the farther you go beyond that, the more noticable it
becomes.


>
>I would venture to say, it's pretty damn even, on the HW side.

I'd venture to say that Shredder has a 2:1 hardware advantage.  :)





This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.