Author: Uri Blass
Date: 23:39:42 03/05/03
Go up one level in this thread
On March 06, 2003 at 01:50:29, Mike Byrne wrote: >On March 06, 2003 at 01:01:32, Uri Blass wrote: > >>On March 05, 2003 at 22:37:56, Mike Byrne wrote: >> >>>On March 05, 2003 at 22:24:45, bobby palacios wrote: >>> >>>>On March 05, 2003 at 20:23:07, Mike Byrne wrote: >>>> >>>>>On March 05, 2003 at 19:56:30, Mike Byrne wrote: >>>>> >>>>>>Ruffian vs Crafty 19.03 "x", Blitz: Game /5 >>>>>> >>>>>>Dual 1.8 Ghz Xeon >>>>>>Ponder On >>>>>>Unified Hiarcs Tourn book >>>>>> >>>>>>Crafty 19.03 "x" +62 -53 =69 52.45% 96.5/184 >>>>>>Ruffian 1.0.1 +53 -62 =69 47.55% 87.5/184 >>>>>> >>>>>>This is clearly the best result a modified Crafty (for me) has ever obtained >>>>>>against Ruffian at Game/5. >>>>> >>>>>This is the last game played - Ruffian has the advantage and lost it. >>>>> >>>>> >>>>> >>>>>Ruffian 1.0.1 - Crafty 19.03 'x' [B33] >>>>> >>>>>W=11.2 ply; 512kN/s; 959 TBAs >>>>>B=10.9 ply; 748kN/s >>>> >>>>This is a bit strange. On my p4 2.47ghz, Ruffian generally outsearches Crafty >>>>19.03 by about 100-200kn/s, but certain engines run better on certain machines, >>>>so maybe this is expected. >>> >>>Since I compiled Crafty on my machine using profiled optimizations, it would be >>>highly optimized for my machine. >>> >>>:)))))) >> >>I am surprised by the number of nodes of Ruffian. >> >>Even on my slow P850 Ruffian can show more than 512 Kn/seconds >> >>Here is some analysis of one of the position of the game by Ruffian. >>depth=12 1/48(Rh5) +0.96 Rh5 Rc3 Qxc3 Qxh5 g4 Qg5 Qa3 h5 h3 Qh4 Qxd6 Qxh3 Qxa6 >>hxg4 Qxb5 >>Nodes: 34277608 NPS: 548266 >>Time: 00:01:02.52 >> >>Why did Ruffian search only 512 knodes per second on 1.8Ghz? >>Are you sure that Ruffian used 100% of the time of your second processor? >> >>Uri > >Yes - I do checked that frequently to make sure no are problems. My p4 behaves >more like a P3 1000(?guess) for many chess programs that are not optimized >specifically for the P4. How much speed can programs earn from optimizing them for p4? Do you get more than 50% speed improvement from your optimizations? 748 nps is almost 50% more than 512 nps and I read in this thread that a person with pentium4 who did not do special optimizations said that Ruffian is faster than crafty on p4. Uri
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