Author: Uri Blass
Date: 10:34:39 08/16/01
Go up one level in this thread
On August 16, 2001 at 12:17:40, Gordon Rattray wrote: >On August 16, 2001 at 11:50:53, Uri Blass wrote: > >>On August 16, 2001 at 07:35:16, Gordon Rattray wrote: >> >>>On August 16, 2001 at 05:54:50, Terje Vagle wrote: >>> >>>>On August 16, 2001 at 05:21:51, Bertil Eklund wrote: >>>> >>>>>On August 16, 2001 at 03:16:59, Terje Vagle wrote: >>>>> >>>>>>Hi all, >>>>>> >>>>>>When I run Fritz 6 or Junior 6 in infinite mode over night, the NPS drop from >>>>>>approx. 600KNS from when I start it to approx 75KNS when it has been running for >>>>>>about 8-10 hours. The clock also starts to blink. >>>>>> >>>>>>BUT, when I run Fritz 5.32 in the same conditions, it continues the analysis >>>>>>with the same KN/s even after several days! >>>>>> >>>>>>WHY? >>>>>> >>>>>>Thanks in advance. >>>>>> >>>>>>Regards >>>>>> >>>>>>Terje Vagle >>>>> >>>>>Hi! >>>>> >>>>>Check the HD activity! It is some kind of overflow of the memory. >>>>>Try to lower the hash-tables a bit. >>>>> >>>>>Bertil >>>> >>>> >>>>Hi, >>>> >>>>No Bertil, that is not it I think. I have 512 MB ram on my PC and hashsize of >>>>128 MB. >>> >>> >>>I have seen the same problems. Like yourself, I am sure that there is no >>>endgame tablebases or other disk access coming into effect. My hashtable size >>>was 256Mb on a 512Mb RAM machine and it was no where near to being an endgame >>>position. I had just put it down to some sort of bug or weakness or the >>>program?! >> >>My guess is that the number of nodes is simply not correct. >>It is probably no bug and no weakness because the program is not supposed to >>know to count nodes but to play chess and if the program use 32 bit number for >>the number of nodes the number is not correct at long time control and there is >>no problem(at least there is no problem if the program do not use the number of >>nodes to decide which lines to search first). > >I disagree. > >If a chess program displays the number of nodes, then it should be correct. >Otherwise, what is the point in displaying it at all!! I agree that this isn't >as significant a bug as, for example, if the program didn't play chess according >to the rules, but it's still a bug. I accept that not all bugs have equal >significance. > >If it's a 32 bit number that is wrapping, this is a problem. The Fritx GUI is >designed to show node counts. Fritz is designed to be able to analyse over long >periods of time. If this doesn't work, it's a bug. > >Gordon No A bug is something that the programmer did not mean to do when the code was written. If the programmmer knows about the problem and does not consider fixing the problem as something important then it is not a bug. If the programmer thinks that the program is going to show correct number of nodes then it is a bug. You cannot know if it is a bug or not a bug without asking the programmer. Uri
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