Author: William Penn
Date: 18:06:11 09/13/03
Go up one level in this thread
On September 13, 2003 at 09:57:41, Michael P. Nance Sr. wrote: >On September 13, 2003 at 09:48:31, Michael P. Nance Sr. wrote: > >>On September 13, 2003 at 09:21:59, m.d.hurd wrote: >> >>>On September 13, 2003 at 08:59:34, William Penn wrote: >>> >>>>On September 13, 2003 at 07:30:49, m.d.hurd wrote: >>>> >>>>>On September 12, 2003 at 21:40:13, William Penn wrote: >>>>> >>>>>>[running Shredder 7 with the March 2003 GUI update] >>>>>> >>>>>>I have 1024MB (1GB) RAM. My video graphics siphons off 32MB, leaving 992MB >>>>>>available. Shredder 7 therefore decides, by some kind of internal formula, that >>>>>>my maximum allowed hash shall be 784MB. It refuses to allow me to set it any >>>>>>larger. No matter what I've tried, it reverts to 784MB or less. >>>>>> >>>>>>Note: For those who have 1GB RAM free and clear (100% available), the hash limit >>>>>>shall be 816MB instead of my 784MB. (784+32=816) I expect this is the same >>>>> >>>>>On my machine it is 819 MB >>>>> >>>>> >>>>>>the Fritz 8 GUI, which I believe is identical to the Shredder 7 GUI. Of course >>>>>>I'm talking about the Chessbase GUI, not the Classic Shredder one. >>>>>> >>>>>>I really should be able to set my hash to 800MB (or perhaps a little more) >>>>>>without a serious system problem, but the Shredder won't allow it. It would take >>>>>>a little longer for the swapfile, but that's OK with me. I'm not in a big hurry! >>>>>>I only run Shredder in infinite mode for an hour or more anyway, so I don't care >>>>>>if it takes 5 minutes for the swapfile. If it is taking too long, I can always >>>>>>abort it. But Shredder 7 refuses to give me that option... >>>>>> >>>>>>Yes, I know it won't help the engine's strength significantly, but I'd like to >>>>>>try it nevertheless. Maybe I just like round numbers -- 800MB sounds better to >>>>>>me than 784MB! >>>>> >>>>>Go here for info : http://www.chessbase.com/support/support.asp?pid=199 >>>>> >>>>> >>>>>>Anybody know a tweak to allow this? I've tried some obvious tweaks with the .ini >>>>>>files, and looked around in the system registry, but didn't get lucky. If anyone >>>>>>knows how to do this, I'd very much like that info. >>>>>>Thanks. >>>>>>WP >>>>> >>>>>Regards >>>>> >>>>>Mike >>>> >>>>Based on the formula in that article... >>>> >>>>HT[KB] = 2.0 * PFreq[MHz] * t[s] >>>> >>>>I have a 2.0MHz processor, and analyze each move for at least 1 hour (3600 >>>>seconds) in Infinite Analysis mode. I do not use any other time controls. >>>>Therefore my optimum hash size would be 14.4GB. So obviously I should set my >>>>hash as high as possible for optimum results. >>>> >>>>However that isn't possible with the current Shredder 7/Fritz 8 GUI. When you >>>>enter a larger-than-recommended-maximum hash size, it asks whether it should >>>>ignore the recommended maximum size (Yes/No). Then it completely ignores your >>>>choice, and refuses to set the hash to whatever you've entered if larger than >>>>the recommended maximum. That is presumably a bug in their algorithm's logic, >>>>and I need to know how to get around it (tweak it, so it works correctly)... >>>>WP >>> >>>The highest mine will go is 818 MB. I would guess that the programmers have been >>>consertavative and assumed windows will take a chunk of memory plus the gui of >>>chessbase and calculated that around 80% should be the maximum available which >>>prevents a new user from crashing his machine. >>> >>>Regards >>> >>>Mike >> >>I have serval Boxes with a gig(1024 mb) of memory. Each one reverts back to 818 >>when You click for a new game. I always hit the optimization and it then sets to >>819. This is for Fritz,Junior,and Shredder. This is the highest allowed by >>Chessbase ,so You don't BLUE SCREEN. Altho, I have played beyond that setting >>,with crahing.>>>>Mike >that should be WITHOUT CRASHING Thanks guys. I guess nobody knows how to do it. I'll keep looking. I only had 128MB RAM in this Walmart machine when I took it out of the box. I installed Shredder 7 and was able to use 48MB hash, no problem, although of course the system was sluggish. I lowered that to 32MB hash and didn't have any problems with it. Then I put in 1024-128=896MB more RAM (1G total). So I really should be able to try a setting of 32+896=928MB hash. Certainly I could use 900MB hash and there wouldn't be a computer crash. Yet Shredder 7 arbitrarily decides that I shall be limited to 784MB hash. I don't like it! I should have the option to try whatever hash size I wish. And it really SHOULD work that way, but the operation involved is buggy - it seems to me. WP
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