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Subject: Re: What about the result of game Rebel-Hoffman? (NT)

Author: Vincent Lejeune

Date: 01:17:35 09/05/99

Go up one level in this thread


On September 05, 1999 at 03:53:35, Ed Schröder wrote:

>On September 05, 1999 at 02:54:08, Mark Young wrote:
>
>>On September 05, 1999 at 00:11:40, Robert Hyatt wrote:
>>
>>>On September 04, 1999 at 23:25:27, Mark Young wrote:
>>>
>>>>On September 04, 1999 at 22:17:37, Robert Hyatt wrote:
>>>>
>>>>>On September 04, 1999 at 18:35:32, James T. Walker wrote:
>>>>>
>>>>>>I feel bad for Ed and the Rebel team.  It appears that ED had a corrupted
>>>>>>version of Rebel loaded and it crashed 10 times during the match.  It was still
>>>>>>a good game in which the GM IMHO played very good.(As GM's are prone to do).  I
>>>>>>think his opening selection was perfect for him.  He seemed to be in control
>>>>>>most of the way after gambiting a pawn.
>>>>>>Jim Walker
>>>>>
>>>>>
>>>>>No.. the problem was the overclocked AMD machine.  If you overclock, you ask
>>>>>for trouble.  And in general, if you ask often enough, you receive what you
>>>>>ask for...
>>>>>
>>>>>I'm not counting this game in the "Is the computer a GM?" rating calculation,
>>>>>as obviously Rebel was broken by the hardware.
>>>>>
>>>>>For the record, overclocking AMD is _bad_.  I have had several horror stories
>>>>>from Crafty users about this.  It seems that the AMD engineers know what their
>>>>>chips can run at, and going beyond that gets you into deep water.  Intel seems
>>>>>to be more conservative rating their chips...
>>>>
>>>>I heard that Ed said it was a bad version of Rebel that caused the
>>>>problem....but I know your statement is true about AMD in general.
>>>
>>>
>>>All I can say is what Ed said to me during the game... he also reported that he
>>>had bogus problems in Paderborn...  illegal moves in the PV, etc.  It is
>>>definitely possible that the program was broken, however.  But I have seen log
>>>files from crafty run on a misbehaving overclocked AMD, and they were pretty
>>>amazing.  Bogus scores, bogus moves, all sorts of nonsense...
>>>
>>>One person only had the problem after several consecutive games, indicating some
>>>sort of thermal problem.  Others just got bogus values, but things were fine
>>>when the clock was set back to normal...
>>
>>He is what Ed posted on the Rebel Board.
>>
>>____________________________________________________________________________
>>Rebel lost. After 10 crashes the moves of the game are lost too. Rebel
>>apparantly played with a wrong version. After 10 crashes I loaded the
>>Sorin/Rohde version. No crashes since then but then it was already too late. I
>>am sorry, it never happened in my whole life I played with a corrupted version.
>>Expensive though! So most likely it was not the hardware. I have some homework
>>to do!
>>Ed
>>____________________________________________________________________________
>
>Some quick online notes, I will report more precisely later.
>
>I take the above back, it was a premature conclusion. After some more
>testing after the game the version that played Sorin/Rohde also crashed.
>
>In the game Rebel played 40.Rg4 showing a score +2.30, that is ridiculus
>of course. I can not reproduce this with any Rebel version I have.
>
>In any case yesterdays game was meaningless for the statistics and the
>discussion if micro's are at GM level on tournamemt time control. Of
>course the result remains including the financial consequences.
>
>Ed


Why didn't you switch to an emergency computer (i.e. PII-450) ?



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