Author: Gerd Isenberg
Date: 09:19:15 10/25/02
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On October 25, 2002 at 12:05:30, Matthias Gemuh wrote: >> >>How long does your getQueenAttacks take in a loop with 10**9 runs? My >>mmx-routine on Athlon XP 2.1+ takes about 51 seconds (no memory access, no >>conditional jumps, up to four mmx-instruction in parallel). >> > > > >"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1" > >It takes 329 secs on Athlon XP 1.8+ for white Queen(s). > >Thanks for the link ! I will try the optimizations you propose in other posting. > >/Matthias. not so bad as i thought. But instead of using the rotated lookups this one should be runtime independent from the position. The rotated lookup version (inlined) took about 20 til 55! seconds on my pc, with constant occupied bitboard but some cyclic squares (loopCounter&1 was 55! seconds). Gerd
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