Author: Tony Werten
Date: 06:35:14 06/14/01
Go up one level in this thread
On June 14, 2001 at 09:06:21, Ed Panek wrote: >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? If think the easiest way is changing 1 thing at a time. So processor or hashtablesize but not both. That way, the time to get to the solution (or plydepth) is more meaningfull. Tony > >Thanks in advance, > >Ed
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