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Subject: Re: Any chance to increase the hash in CM7000?

Author: Dave Gomboc

Date: 12:40:38 03/09/00

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On March 09, 2000 at 13:40:54, John Merlino wrote:

>On March 09, 2000 at 06:17:20, Harald Faber wrote:
>
>>On March 08, 2000 at 14:11:19, John Merlino wrote:
>>>3c) I'm not exactly sure what you're asking for here. Please explain further....
>>
>>
>>AFAIK one can only analyse the current loaded game. It would also be useful to
>>analyse all games of a database. And, of course, me and some other computerchess
>>addicts would also like to see EPD analysis, either with analyse EPD or with
>>analyse database where the database only contains EPD/FEN-positions.
>>
>>
>>>So
>>>the GUI will allow the user to set values up to 64MB (perhaps 128MB). Remember
>>>that the TYPICAL Chessmaster user could get himself into serious trouble by
>>>cranking the value all the way up on his mimimum spec machine.
>>
>>
>>Would it be hard for the programmers to get the physical free RAM and set the
>>hash automatically to the first value below that size?
>>
>
>It wouldn't be hard at all. But that's probably not a nice thing to do to "the
>typical user", who is probably also running Word, AOL, a cute little background
>corkboard app, a virus scanner that he forgot to change the preferences on so it
>scans his entire hard drive every hour, and several other system tray apps that
>he has no idea how to turn off after he installed them. ;-)

*laugh*

>I suspect that the default is going to be 2MB this time around, and there will
>be a BIG warning any time the user attempts to adjust the hash table size too
>high for his/her machine.
>
>jm

Why not populate a list box with entries from 2MB (or whatever) up to the size
of physical memory, as reported by an API call?  This would ensure that users
can't do something catastrophically stupid, while allowing a machine with 1Gb of
memory to use it.  As long as that BIG warning includes a strong suggestion to
close off other applications for large hash table sizes, things should be
alright.

Dave



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