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Subject: Re: How to play games between different versions of Crafty

Author: Robert Hyatt

Date: 19:45:53 01/21/00

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On January 21, 2000 at 15:54:17, Michel Langeveld wrote:

>On January 21, 2000 at 15:36:15, Robert Hyatt wrote:
>
>>On January 21, 2000 at 15:15:39, Jeremiah Penery wrote:
>>
>>>On January 21, 2000 at 14:56:16, Robert Hyatt wrote:
>>>
>>>>On January 21, 2000 at 13:17:25, Rafael Villarroel wrote:
>>>>
>>>>>If playing games between different versions of Crafty
>>>>>under Winboard, is it ok to have both versions in the same directory?
>>>>>I mean, could there be problems because of accesing the book,
>>>>>writing learn or log files, etc?
>>>>>Rafael
>>>>
>>>>
>>>>Probably.  Use the option in winboard that lets you specify a different
>>>>starting directory for each version.  Then you install the executable and
>>>>book files in the two directories and avoid the problems with both trying
>>>>to update a learn file at the same time and corrupting it.
>>>>
>>>>IE if position.bin gets corrupted, it will hang crafty when it tries to use
>>>>it.
>>>
>>>I'm not saying that it's a good thing to do, or that it won't ever cause
>>>problems, but I've never had any problems running two crafties against each
>>>other out of the same directory, using all the same files.
>>>
>>>YMMV, of course.
>>>
>>>Jeremiah
>>
>>
>>The danger is learning.  Turn it off and there won't be any problems, except
>>for missing log files here and there.  But with learning on, I don't take any
>>precautions like file locking, to prevent simultaneous updating.  Which would
>>be ugly when/if it happens...  as the file will definitely become corrupted.
>>
>>It might just mean it leaves book earlier than it should.  Or it might hang
>>if the file gets corrupted in a different way.
>
>Can't this be fixed in the next version of Crafty?? IE Network Support.


It isn't a network issue... it is a file sharing issue.  That begins to tread
on a big portability issue...



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