Author: Zach Wegner
Date: 19:48:29 11/23/03
Go up one level in this thread
On November 23, 2003 at 21:04:43, Robert Hyatt wrote: >On November 23, 2003 at 20:57:01, Sean Mintz wrote: > >>I did a test of the latest crafty (19.5) using an executable I made with Intel C >>5.0 (/Ox /G6 /Gr /Ob2 /Qipo optimizations). My machine is a dual 1.2 ghz athlon >>MP running at 1.35 ghz with 150mhz fsb. >> >>My crafty.rc file has this: >> >>ansi off >>mode normal >>adaptive 1.4M 6M 192M 1M 48M >>smpmt 2 >>book on >>tbpath f:\chess\tablebases\ >>cache 8M >>learn 7 >>ponder on >>swindle on >>flag on >>log off >>exit >> >>--- >>Crafty v19.5 (2 cpus) >> >>White(1): mt 0 >>parallel threads disabled. >>White(1): bench >>Running benchmark. . . >>...... >>Total nodes: 100409437 >>Raw nodes per second: 772380 >>Total elapsed time: 130 >>SMP time-to-ply measurement: 4.923077 >>White(1): quit >>--- >> >>--- >>Crafty v19.5 (2 cpus) >> >>White(1): bench >>Running benchmark. . . >>...... >>Total nodes: 98693325 >>Raw nodes per second: 1542083 >>Total elapsed time: 64 >>SMP time-to-ply measurement: 10.000000 >>White(1): quit >>--- >> >>1542083 / 772380 = 1.9965 x faster >> >> >>Sean Mintz > > >Told you it was better. :) this looks rather suspect. the multi-threaded bench is searching less nodes than the single-threaded. are there any explanations for that? or are you just that good?
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