Author: bobby palacios
Date: 05:13:33 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 Just for comparison Ruffian gets around 1,000-1,100 kn/s on my p4 2.47ghz, Crafty 875-950 kn/s. So Crafty outsearching Ruffian by almost 50% was a bit of a shock.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.