Author: Vincent Diepeveen
Date: 07:03:26 10/01/03
Go up one level in this thread
On October 01, 2003 at 07:45:48, Joachim Rang wrote: >On October 01, 2003 at 07:31:53, Vincent Diepeveen wrote: > >>On October 01, 2003 at 07:24:24, Joachim Rang wrote: >> >>>On September 30, 2003 at 19:33:30, Vincent Diepeveen wrote: >>> >>>>On September 30, 2003 at 19:30:30, Dann Corbit wrote: >>>> >>>>>On September 30, 2003 at 19:27:38, Peter Collins wrote: >>>>> >>>>>>On September 30, 2003 at 19:22:26, Dann Corbit wrote: >>>>>> >>>>>>>On September 30, 2003 at 19:14:02, Peter Collins wrote: >>>>>>> >>>>>>>>My apologies for the format (from memory) of the position I'd like to analyse, >>>>>>>>but I am at a terminal outside of where I can access the gamescore: >>>>>>>> >>>>>>>>Black to make his 29th move: >>>>>>>> >>>>>>>>3q2k1 >>>>>>>>5p1p >>>>>>>>1n2nbpB >>>>>>>>1P1p4 >>>>>>>>1Qp3P1 >>>>>>>>7P >>>>>>>>1P3PK1 >>>>>>>>1B2R3 >>>>>>>> >>>>>>>>Sorry if this is the wrong forum, I'm new here. >>>>>>>> >>>>>>>>A friend of mine played black against Jeremy Silman..he only looked at about a >>>>>>>>trillion nodes on slower machines... >>>>>>> >>>>>>>[D]3q2k1/5p1p/1n2nbpB/1P1p4/1Qp3P1/7P/1P3PK1/1B2R3 b - - >>>>>> >>>>>>Thanks Dan, indeed, this is the correct position. >>>>>> >>>>>>I think the one of the best variation so far goes... >>>>>> >>>>>>29...d4 30.Be4 d3 31.Qd2 g5 32.h4 gxh4 and from here I am using a 2800Barton, >>>>>>1.5MB Ram to analyse it. >>>>> >>>>>1.5 GB, I suppose. >>>>> >>>>>Do you have a preference for what program to analyze with? >>>>> >>>>>Many programs will never make it to 24 ply [*] >>>>> >>>>>[*] By 'never' I mean that not in several years of continuous time. >>>> >>>>at a 486 sure :) >>>> >>>>But how about 500 processors? >>>> >>>>2 hours or so? >>> >>> >>>Diep will never make it to play 24 on your famous 500 CPU-Box. >>> >>>regards Joachim >> >>junior gets dual 21 ply, shredder searched at a dual P4 in ict3 like 19 in a >>more complex position than this against diep. >> >>i'm not really seeing the problem when i use similar definitions of a ply like >>them. >> >>Best regards, >>Vincent > > >didn't you wrote that you no longer do stupid pruning? Without extensive pruning >no program will get 24 plies even at a 500-CPU-Machine. > >I don't know your program, but do you actually believe that Diep would reach a >depth of 24 in two or three hours? > >regards Joachim i'm using R=3 nullmove. there is no limit on the number of plies you can search with nullmove. if i limit the extensions, sure 24 ply is not a major problem when all the search lines end in for example endgame with little possibilities. Opening is really the worst case position there. a well tuned evaluation function for this position should have no problems reaching 24 after a couple of hours 500 cpu. you have no idea what you're talking about. how many times in your life have you run with a hashtable of sizes up to 250GB having 512GB ram?
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