Author: Stuart Cracraft
Date: 16:53:26 08/05/04
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On August 05, 2004 at 17:13:56, James Swafford wrote: >On August 05, 2004 at 00:00:00, Stuart Cracraft wrote: > >>On August 04, 2004 at 23:38:46, Stuart Cracraft wrote: >> > >Just an observation, but the time of your post is >00:00:00. Were you really that lucky? :) Or >is that a bug? I reverted to the previous scheme of generating all moves first. The new code didn't hold up under a longer test of more positions where real moves were involved. I'll save that one for the next program I guess. Annoying since I though it would be easy to implement, but something is costing it. Not sure what. No big deal. I've spent enough time on it. > >I guess you were 'lucky'. The preceding post was >only 21 minutes before midnight. > >-- >James > > >>>Nothing technical here that anyone can really chew >>>on and I don't expect any huge insights from myself >>>or anyone; but I have had nothing but bitter frustration >>>after trying to implement something ostensibly simple: >>>avoiding a full move generation after a successful >>>has lookup. My version with that feature is still >>>8.5% slower than the version that does a full move gen >>>and looks for the hash move afterwards. >>> >>>Nothing like banging one's head against a concrete wall >>>for a week. >> >>This bulletin board is some kind of weird Rogerian Reflective >>counselor's couch! So I worked on this problem for 1+ week >>and was ready to give up, write a simple post, and 5 minutes >>later find it. >> >>New program is: >> >> 19.5% faster than previous non-optimal attempt with same >> movegen-after-hashmove >>and >> 12.5% faster than the prior attempt with movegen-before-hashmove >> >>The code is certainly uglier with special exceptions and a three-way >>flag for various conditions of the hash move, but when all was said >>and done, the pizza man delivered. >> >>Now on to SEE and I see there is a helpful thread already out there. >> >>Stuart
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