Author: Johan Hutting
Date: 09:59:46 03/20/03
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On March 20, 2003 at 12:17:23, Albert Bertilsson wrote: >Hi everybody! > >For those of you with a good memory you probably saw my posts about WAC, and >that I implemented check extensions and got a really nice improvement. > >After playing some 150 games with about 10 lockups I also know that my >extensions aren't bug free =(. Are you sure it's the extensions? I extend at the start of the search function btw, that way you also extend one ply if the current position is in check. If you're also using hashtables, keep in mind that the depth stored is altered. >Am I missing something important here, because I've tried all the basic >debugging such checking for buffer overflows etc. Check your functions for expected output, if it messes up you know where to look :) This helped me out with Celes alot. I have extra functions enabled in debugbuilds that check the output and dump to an extra debugfile if something odd occurs. > >If it is of any help, I also tried NullMove pruning, also causing hang ups but >much more frequently (every fith position I tried). One thing at a time :) First fix your hangs, then add nullmove and.. and.. :)
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