Author: Russell Reagan
Date: 10:42:25 02/20/04
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On February 20, 2004 at 07:42:58, Roberto Nerici wrote: >This was an interesting test that you did. However, my results are a bit >different. On a P3-733 and using MSVC6, I found the "Gerd" test the fastest by a >fair bit, followed by "table16" and "eugene2", with "eugene" (the one you're >using) slower still. > >I had to make some very minor changes to get it to compile under VC6, but >nothing that should make a difference. However, I did then make one further >change: I declared the scan routines as __inline and this speeded them all up >compared to letting the compiler inline what it wanted. It probably varies depending upon the CPU you use. I don't trust the test results of the bitscans that use 16-bit tables however, because in this test the 16-bit lookup table will usually get stuffed into the cache. When the chess program is running, the entire 16-bit table will rarely be in the cache, so I like the ones that use smaller lookup tables better for an actual chess program.
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