Author: James T. Walker
Date: 11:57:51 01/24/03
Go up one level in this thread
On January 24, 2003 at 14:33:28, Joshua Haglund wrote: >On January 24, 2003 at 10:09:31, Andrew R. Case wrote: > >>On January 24, 2003 at 08:59:28, James T. Walker wrote: >> >>>On January 24, 2003 at 01:04:17, Brian Katz wrote: >>> >>>>In the following famous position, which I am sure many of you are familiar with, >>>>Botvinnik - Capablanca, AVRO Holland 1938 1-0...White (Botvinnik) played the >>>>extraordinary 30.Ba3!! and went onto win Brilliantly. >>>>The remaining moves were:30...Qxa3 31.Nh5+! gxh5 32.Qg5+ Kf8 33.Qxf6+ Kg8 34.e7 >>>>Qc1+ 35.Kf2 Qc2+ 36.Kg3 Qd3+ 37.Kh4 Qe4+ 38.Kxh5 Qe2+ 39.Kh4 Qe4+ 40.g4 Qe1+ >>>>41.Kh5 Black Resigns 1-0 >>>> >>>>[D]8/p3q1kp/1p2Pnp1/3pQ3/2pP4/1nP3N1/1B4PP/6K1 w >>>> >>>>My question is will running full games with Fritz 7......................... >>>>Hash Tables set at 818 MB cause heat problems for an AMD Athlon 2600+ 1 gig of >>>>DDR SDRAM. >>>> >> >> >>>>I have beeb experimenting with Fritz 7 Hash Table settings in the infinite >>>>analysis mode. >>>>Here are some results based on various Hash Table settings. Time to find 30.Ba3 >>>>as a winning move not just to see it in the list of alternatives. Also nodes per >>>>second. >>>>At 818 MB Hash, I hear no extra work on the harddrive, only when first setting >>>>the Hash at 818 for a few seconds then no more. >>>> >>>> >>>>The results from 16,32,64,128,256,and 512 MB Hash Tables respectively were all >>>>basically the same. >>>> >>>>At 16MB it took 3 seconds to notice that 30.Ba3...=(-0.16) and Black is better >>>>and then it drops to 0.00...Then at 1:33 it jumps to + 0.34 in favor of White. >>>>Then at 3 min 15 secs.it jumps to +-(3.97) kN/s at 1116. >>>> >>>>At 256 MB it took 3 seconds to notice that 30.Ba3...=(-0.16) and Black is better >>>>and again drops to =(0.00)...Then at 1:05 it jumps to + 0.34 in favor of White. >>>>Then at 2:00 it jumps to +-(3.31) at 1064 kn/s >>>> >>>>Now at 512 MB everything is basically the same except the value at 1:02 is at >>>>+0.50 rather than the + 0.34 as above. Then at 1:57 it goes to +- 3.88 >>>> >>>>At 768 the only real difference is that the value at the 1:00 minute mark is >>>>down at + 0.34 >>>> >>>>At 818 I get similar results early on then at 1:03 + 0.50 which is higher than >>>>the reading at 768 MB setting, and 2:08 the Highest value at this early stage +- >>>>(3.97) kN's flucuate in the low 1000's in all of the settings listed except when >>>>set at the 16 MB Hash which was in the 1100's. >>>> >>>>So basically, will the higher value in the same time period such as the + 0.50 >>>>as opposed to the + 0.34 make a difference in a game. Will the higher Hash Table >>>>818 MB settin, yielding an evaluation + 3.99 at 2:10 be better than the + 3.88 >>>>at 1:58 with the lower Hash Table setting? >>>> >>>>My main concern is that I do not want to over tax my processor. >>>> >>>>If anyone has some insight on this It would be greatly appreciated. >>>> >>>> >>>>Thanks >>>>Brian Katz >>> >>>Hello Brian, >>>How do you get Fritz 7 to accept 818M hash setting. Anything I set over 288M >>>seems to default to 287 as noted in the "Notation" window where the moves are >>>displayed. >>>Jim >> >> >> The reason you can't get hash tables larger than 287mb is your >>operating system. Only windows nt, 2000, or xp can make use of larger hash >>tables. > >I find it's from the amount of ram... a certain percentage, say 75% I have 768 Meg of ram. I still can only get Fritz to accept 287M. However I can get Shredder in the same GUI to accept 608M. So maybe Fritz has a problem with Win98 but Shredder does not. Jim
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