Author: Gerd Isenberg
Date: 13:12:33 05/06/04
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On May 06, 2004 at 12:19:13, Gian-Carlo Pascutto wrote: >I hope you don't mean the ones blow. > >Are you still claiming you 'measured' 3.1 which supposedly contradicts >the 2.8 I measured? > Gian-Carlo, sorry, but what is your point with such chaotical, none deterministic systems? If i imagine the chaotical effects even with one processor after some minor code/data changes and different processor architectures. If i imagine how chaotical multiprocessor systems are, where memory and cache coherency are big issues. Did you exactly the same test with crafty on the same system as Bob? Or did you mention your own experience with Deep Sjeng and claim in general with multprosser systems smp or numa, speedup with nullmove is less than Bob's suggested formula for 1 <= N <= 8: Nullmove disabled: 1 + (N-1)*0.7 Nullmove enabled: 1 + (N-1)*0.6 Thanks, Gerd
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