Author: Eric Oldre
Date: 14:24:59 06/15/04
First off, I've taken everyone's advice from last week and changed my engine so that most functions take a pointer to a board object as a parameter instead of operating on a global board. I now have it doing a basic alpha-beta search with QSearch, a basic evaluation, and MMV/LVA move ordering. It is also returning and printing out the PV. At this point (having hardly anything tuned) it's already as fast as my old engine in vb.net. Although as I improve the evaluation it will slow down of course. My next step is to get it implementing the winboard protocol, perhaps UCI as well. I've decided to take a approach where i have the main thread read commands from winboard, and a separate "thinker" thread work on the problem. similar in concept to what i saw in the Gerbil source. Since this is the first program I've written in C. I don't have much experience with multi-threading in C. I've started to create something using the CreateThread and ExitThread calls in <windows.h>. I was wondering if people felt that was a good idea, or if I'd be better off trying to learn about POSIX threading. Is there a 3rd approach to look at? Is there a performance advantage to either? Does one have a much easier learning curve than the other? What i've done so far with the <windows.h> stuff hasn't seemed to difficult to grasp, but I'm not terribly far along yet. Thanks, Eric Oldre
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