Author: Komputer Korner
Date: 14:18:25 07/29/98
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On July 29, 1998 at 11:14:09, Ernst A. Heinz wrote: >On July 29, 1998 at 08:08:01, Komputer Korner wrote: >> >>the RAM for hash tables, you will get swapping on every move. Shredder 2 won't >>even allow swapping. It just refuses to start when more than 50% of RAM is used >>for hash tables. Fritz 5 is interesting. In the hash table dialog box you can >>enter 90% of the RAM for hash tables in WIN NT 4 but in the Task Manager, you >>can see the real amount allowed in the ntvdm.exe shell that manages all the >>Fritz processes. With 144Mb of RAM and a single Fritz engine it allows only 69 >>Mb of RAM to be used. With engine vs engine, it goes to 78Mb RAM total for all >>engines even when I load 60Mb each!!!!!!!!! >>-- >>Komputer Korner > >Korner, > >Thank you very much for enlightening me! > >Stupid me, I always thought that "ntvdm" was the "Windows NT Virtual Memory >Device Manager". > >Now I only wonder why Microsoft ships this alleged "Fritz shell" with each >copy of Windows NT ... :-) > >=Ernst= Look, I know that it is a WIN NT file. My point is that all the programs including Fritz get managed by this executable. The point of the blocks of hash being in powers of 2 is valid but here is an example. Shredder allows 96 Mb for a hash tabele. That is one of the settings. However it refuses to run with that setting om my 144Mb RAM machine. Surely I have enough extra RAM to accomodate a 96Mb hash table, but I can't Shredder won't take more than 48Mb plus 8 Mb more for the pawn hash table. There are many other examples of programs swapping when hash tables are chosen that are more than 50% of the total. Tom Kerrigan hasn't addressed this issue. -- Komputer Korner
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