Author: Frank Phillips
Date: 14:32:39 09/25/99
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On September 25, 1999 at 08:33:48, Bo Persson wrote: >On September 25, 1999 at 06:59:06, Frank Phillips wrote: > >>My program compiled with MSVC++ 6 (Enterprise) is almost 30% slower than the >>same code with the same options compiled with MSVC++V5, which is a bit >>disappointing. The simple test I did was a fixed depth search for six middle >>game positions. More worrying than the decrease in speed is the number of nodes >>to reach the fixed depth which have increased under VC6. >> >>Usual type of program – PVS with hash tables. Mixture of bitboards and offset >>arrays. >> >>What am I missing? >> >>Frank > >My program definitly runs faster with version 6. > >What *are* your compile options? > >Are you using an of-the-CD install, or have you downloaded Service Pack 3? > > >Bo Persson >bop@malmo.mail.telia.com Compile options are simply Maximise speed, Pentium Pro and fast call. I installed SP3 but this made difference. Guess it is time to hunt for bugs. VC6 already found some (==) that should have been (=) but in places that did not matter. Oh dear. Frank
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