Computer Chess Club Archives




Subject: Re: is the

Author: Bo Persson

Date: 04:21:27 07/25/98

Go up one level in this thread

On July 25, 1998 at 06:24:46, Robert Hyatt wrote:

>On July 24, 1998 at 23:08:02, Tom Kerrigan wrote:
>>On July 24, 1998 at 16:33:03, Robert Hyatt wrote:
>>>Bottom line is that *any* system ought to behave like this, and I can't imagine
>>>Win95 not doing so, based on my infrequent interactions with it.  But it might
>>>not be nearly as "smart" as unix overall.  In any case, I can start Crafty on my
>>>P6 and get the first move before a single second elapses on the clock.  Many
>>>complain about Crafty on Win95, but when they throttle back the hash table size,
>>>the problem seems to go away, at least the reported 10 second delay to get
>>>started becomes 1 or 2 seconds instead.
>>Hmmm... I thought this might be because of Win95's disk cache, but then it
>>wouldn't make any sense for smaller hash tables to work better (because the disk
>>cache supposedly uses all of the "unused" RAM) and there's probably a
>>write-through disk cache policy anyway.
>>I guess Win95 might just be bigger than LINUX...
>I'd be afraid to venture a guess without source code.  I *know* what Linux
>does, because I have the source and poke around in it all the time.  Win95 is
>an unknown.  But it obviously has a flaw or two built in somewhere, because
>everyone I know has the slow start-up problem.  Tim Mann got around this by
>only starting the chess program once. and then using "new" for new games.  It
>would help if he would start the engine when winboard starts, then send it a
>couple of moves to take it out of book and let it get started searching, then
>send it "new" and then connect to the server.  But that's a big kludge...

Win95 is somewhat flawed (in this sense :-) because it first loads the .exe file
into its cache buffers and then copies it from there into the program address
space. Of course this (temporarilly) uses twice the RAM actually needed. This is
one thing that is supposed to be fixed in Win98!

So you could try to move to Win98 if you dare, :-)
or use 512 MB RAM as Bob seems to do...

Bo Persson

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