Author: Daniel Pineo
Date: 09:12:02 05/08/05
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On May 08, 2005 at 02:40:33, A. Zanchetta wrote: >Hi, > >a few months ago, I ported Crafty (Special Edition) to Pocket PC, but I only >tried to make it run. Now I would be interested in making it run *faster* ... > >I have tried many compilation options and even downloaded the Intel Compiler. >With Microsoft tools (EVC++ 4.0, Visual Studio 2005 Beta 2), the default options >are the best... >And the Intel compiler generates a much slower code. > >How much improvement (%) can I get by writing a few assembly routines (i.e. >those which are written in assembly on the Windows/X86 version) ? > >As of today, here are the results I get with CEBoard+Crafty Classic 2004 on my >Dell Axim X50v: >BT2450 : 2342 (EVC++4.0), 2350 (VS2005 Beta 2) >BT2630 : 2387 (VS2005 Beta 2) > >Thanks, >Alain It looks like your Axim only has 32k + 32k of cache, that's not very much. Last I checked, Crafty used lots of lookups that work best in high end machines with plenty of cache. It might not fit very well into 32+32. If it doesn't fit then your performance will plummet. Bob can probably tell you how much Crafty needs, or maybe he has some compile flags to change lookups into runtime calculations. - Dan Pineo
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