Author: Ed Panek
Date: 06:06:21 06/14/01
Go up one level in this thread
On June 14, 2001 at 03:50:31, Tony Werten wrote: >On June 14, 2001 at 03:14:04, Uri Blass wrote: > >>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 > >That makes the comparison quite useless. > >ie pos 2 > >If the counter went around once then 2^32-344954985 positions are searched in >26860 seconds wich means 147 Kn/s wich is too low in the endgame on 800Mhz. So >it went round more than once. How often ? If normal speed is 800Kn/s it went >around 6 times. > >On a 1.3 Ghz speed is different and so is the number of times the counter went >around. I'd know how often, if I would now the speed, but that would make the >test unnescessairy. > >Tony > > >> >>Uri Is this type of data totally useless? How can I make it more meaningful? Thanks in advance, Ed
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