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Subject: Re: Simple quad-opteron test

Author: Robert Hyatt

Date: 16:54:49 12/03/03

Go up one level in this thread


On December 03, 2003 at 19:37:13, Jeremiah Penery wrote:

>On December 03, 2003 at 16:22:27, Robert Hyatt wrote:
>
>>On December 03, 2003 at 15:54:45, Tord Romstad wrote:
>>
>>>On December 03, 2003 at 14:59:03, Robert Hyatt wrote:
>>>
>>>>=====================10 seconds per position========================
>>>>test results summary:
>>>>
>>>>total positions searched..........         300
>>>>number right......................         299
>>>
>>>That's really impressive, even considering the fast hardware.  The last
>>>time I tried, I got 289/300 at 1 second/position, 293/300 at 3 seconds,
>>>294/300 at 5 seconds, 295/300 at 10 seconds, and 298/300 at 20 seconds.
>>>
>>>The remaining two positions, number 100 and 230, are *never* solved.
>>>I can let my program analyse for hours, but it still doesn't find
>>>the solutions.  In both positions, it thinks it is winning, but
>>>never finds the right moves.
>>
>>I have gotten 230 in the past, but when I made some passed pawn changes of
>>some sort, it went away.  But even back then it took several minutes to choose
>>the rook toss...
>
>If you compile with the #define DETECTDRAW it will find almost instantly that
>any move other than Rb4 is a blocked position draw. :)

Have you tried it already?  I'll give it a whirl tonight when I get home..

Although the opteron seems to be down right now.  They were installing a
firewall, so I might be dead until tomorrow.





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