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Subject: Re: GT2 Athlon 1.3Ghz vs PIII 800 time to search depth

Author: Uri Blass

Date: 00:14:04 06/14/01

Go up one level in this thread


On June 14, 2001 at 02:55:02, Tony Werten wrote:

>On June 13, 2001 at 11:49:35, Ed Panek wrote:
>
>>On June 13, 2001 at 11:00:11, James T. Walker wrote:
>>
>>>On June 12, 2001 at 20:44:58, Ed Panek wrote:
>>>
>>>>Athlon 1.3Ghz 192 MBhash tables..
>>>>
>>>>14:16:34.9	-0.50	25	-1715898192
>>>>07:27:40.6	-0.44	24	-344954985
>>>>00:00:31.9	-0.42	14	13011609
>>>>00:12:59.1	-0.36	20	339922649
>>>>
>>>>Same position PIII 800 48 MB HASH tables
>>>>
>>>>17:57:26.9	-0.44	24	-1100754853
>>>>00:00:45.8	-0.42	14	13392336
>>>>00:23:58.1	-0.36	20	436641487
>>>>Bigger difference than I thought
>>>>
>>>>
>>>>This is from the current Gt2 vs the web position
>>>>
>>>>
>>>>Ed
>>>
>>>Hello Ed,
>>>I have no idea what your numbers above mean but it seems to me that if you want
>>>to compare processor speed you need to use the same amount of hash memory.  I
>>>can't get to the game to see what the position is like but if it's close to an
>>>endgame or deep into an endgame the hash tables can make a very big difference.
>>>Jim
>>
>>
>>Hi Jim thanks for the reply..typically in computer chess the above means
>>
>>time-score-depth-nodes
>
>Then what does the - mean ?

The last column does not mean number of nodes.

It mean that value of an integer variable that is called nodes.

This variable can get values between -2,147,483,648 and 2,147,483,647 and is
updated by the C commands nodes++;

nodes++ does not mean always increasing the value of nodes by 1 and when
nodes=2,147,483,647 and you do nodes++ you get -2,147,483,648

Uri



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