Author: Christophe Theron
Date: 10:45:04 10/07/99
Go up one level in this thread
On October 06, 1999 at 03:46:51, Bernhard Bauer wrote:
>On October 05, 1999 at 11:34:54, Christophe Theron wrote:
>
>>On October 05, 1999 at 10:06:35, Bernhard Bauer wrote:
>>
>>>On October 05, 1999 at 09:47:29, Shep wrote:
>>>
>>>>On October 05, 1999 at 09:25:43, Wayne Lowrance wrote:
>>>>
>>>>>On October 05, 1999 at 08:42:36, Bernhard Bauer wrote:
>>>>>
>>>>
>>>>>>As Fritz and Tiger are designed to be used with PB=on any results with BP=off
>>>>>>are questionable since they do not reflect the true program strengt.
>>>>>>
>>>>>>Kind regards
>>>>>>Bernhard
>>>>>
>>>>>I agree with that. I just cannot get interested in matches played on one comp.
>>>>>If the author of both programs would come out and say it makes no difference
>>>>>that would be another story. However I know Bob Hyatt has said so many times it
>>>>>affects Crafty !
>>>>
>>>>Actually, Christophe said Tiger should play equally well with PB off.
>>>>Of course it may be a different story with Fritz.
>>>>
>>>>---
>>>>Shep
>>>
>>>If a program plays equally well with PB=off as it plays with PB=on than I
>>>would conclude that PB=on is broken.
>>>Kind regards
>>>Bernhard
>>
>>
>>Of course not!
>>
>>Turning PB on helps if you have 2 computer and thus the programs can use their
>>CPUs during the opponent's thinking time.
>>
>>But for me it's very clear that if prog A beats prog B on 2 identical computers
>>with PB on, prog A will beat prog B on one computer with PB off.
>>
>>If you have a counter example, give proof of what you say. Give a reproducible
>>experiment we could conduct in order to support your argument.
>>
>>
>> Christophe
>
>Dear Christophe,
>
>I refered to the statement (read above)
>>>>Actually, Christophe said Tiger should play equally well with PB off.
>
>I try to write slowly.
>If you play against a program running on one computer with pondering on, I would
>assume it to produce better moves than the same program running at another time
>on the same computer with pondering off. If not, I conclude
>pondering on is broken.
>This reasoning is so simple that I don't see a necessity for any proof.
>Just common sense.
>However, if you have two programs running on one computer with only one cpu
>with pondering on or pondering off they may perform (relativly to each other)
>the same way - or not.
>If you turn tablebases off it may not affect the relative performance ether.
>And if you play without a book it may or may not affect the relative performance
>too. Anyway, it is better to use a fully configuered program
>for test purposes than a crippeled version.
>All that may be of no interest to you, if you are only interested in
>numbers, results or such bean counting. But if you are interested in
>good games it makes a big difference.
>Kind regards
>Bernhard
OK, maybe my statement wasn't clear. Here is what I mean:
For me it's very clear that if prog A beats prog B on 2 identical computers
with PB on IN BOTH ENGINES, prog A will beat prog B on one computer with PB off
IN BOTH ENGINES.
Which indeed is a different thing.
The idea of running 2 programs on the same computer with PB on in both is
something I would never consider BTW.
Christophe
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