Author: Chessfun
Date: 03:38:15 03/06/03
Go up one level in this thread
On March 06, 2003 at 02:39:42, Uri Blass wrote: >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 His average NPS was 512 k/Ns, this don't mean on a given position he would get that. Plus you never posted the FEN for him to check. In this case Ruffian shows 959 TBAS, this itself slows down NPS in some cases by a factor of 6 or 7. So to simply say Ruffian only did 512 k/Ns and I can get more on my PC something is wrong, is itself wrong. Sarah.
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