Computer Chess Club Archives




Subject: it be

Author: Don Dailey

Date: 16:15:58 07/30/98

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On July 30, 1998 at 12:24:56, Tom Kerrigan wrote:

>I don't know why you're so pissed off at Windows 95.
>I use Win95 at home. It works perfectly. I think the last time it crashed was
>sometime last week. My computer at work has crashed twice this week and it's
>running NT 4.0 (and I don't stress it nearly as much, either).
>I know a number of people who have problems with Win95. Almost every problem is
>human error or hardware error. Maybe you should get somebody who's good with
>computers to take a look at your setup.
>I don't think you need a huge hash table to write a chess program. In fact,
>simply having a hash table is the important part. A few megabytes is nearly as
>good as a few gigabytes.

I don't have too many thoughts on Windows 95 since I don't use it but
I would like to say something about the hash table comment.  You can
easily find out what a reasonable hash table size is by doing some
tests at the level you intend to play.  Time several positions and
note the iteration times using a very tiny hash tables.  Make the
time run well beyond the target time you intend to play.  Keep
doubling the hash table size util you stop noticing much of a speedup.
At this point you have reached a point of diminishing returns and do
not need bigger tables unless you want to play longer games.

- Don

P.S. I changed the subject of this post since the old title "is the"
     was starting to get boring.

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