Author: Vincent Diepeveen
Date: 10:03:23 09/04/02
Go up one level in this thread
On September 04, 2002 at 12:25:09, Robert Hyatt wrote: the time control is 3 minutes a move at most tournaments, it sure used to be in world champs. Please also report the node counts. i have a version of crafty here, 18.15 which is compiled with msvc 6 sp4 processor pack (P6 optimalisations which default m$ 6 doesn't have). It is interesting to realize that cray blitz had about 500k nodes a second at that cray machine when using 16 processors. >On September 04, 2002 at 12:11:53, Slater Wold wrote: > >>Bob, do you have those 20 positions from the ICCA article? >> >>If so could you e-mail or post them here for me? I would greatly apprecaite it. > > >you mean the 24 positions from the MchessPro vs Cray Blitz game that I used >in the JICCA article? If so, here they are... > >r2qkbnr/ppp2p1p/2n5/3P4/2BP1pb1/2N2p2/PPPQ2PP/R1B2RK1 b kq - ; bm a1a1 >r2qkbnr/ppp2p1p/8/nB1P4/3P1pb1/2N2p2/PPPQ2PP/R1B2RK1 b kq - ; bm a1a1 >a1a1 r2qkbnr/pp3p1p/2p5/nB1P4/3P1Qb1/2N2p2/PPP3PP/R1B2RK1 b kq - ; bm a1a1 >black a1a1 >r2qkb1r/pp3p1p/2p2n2/nB1P4/3P1Qb1/2N2p2/PPP3PP/R1B1R1K1 b kq - ; bm a1a1 >a1a1 r2q1b1r/pp1k1p1p/2P2n2/nB6/3P1Qb1/2N2p2/PPP3PP/R1B1R1K1 b - - ; bm a1a1 >black a1a1 >r2q1b1r/p2k1p1p/2p2n2/nB6/3PNQb1/5p2/PPP3PP/R1B1R1K1 b - - ; bm a1a1 >r2q1b1r/p2k1p1p/2p5/nB6/3Pn1Q1/5p2/PPP3PP/R1B1R1K1 b - - ; bm a1a1 >r2q1b1r/p1k2p1p/2p5/nB6/3PR1Q1/5p2/PPP3PP/R1B3K1 b - - ; bm a1a1 >r2q1b1r/p1k2p1p/8/np6/3PR3/5Q2/PPP3PP/R1B3K1 b - - ; bm a1a1 >r4b1r/p1kq1p1p/8/np6/3P1R2/5Q2/PPP3PP/R1B3K1 b - - ; bm a1a1 >r6r/p1kqbR1p/8/np6/3P4/5Q2/PPP3PP/R1B3K1 b - - ; bm a1a1 >5r1r/p1kqbR1p/8/np6/3P1B2/5Q2/PPP3PP/R5K1 b - - ; bm a1a1 >5r1r/p2qbR1p/1k6/np2B3/3P4/5Q2/PPP3PP/R5K1 b - - ; bm a1a1 >5rr1/p2qbR1p/1k6/np2B3/3P4/2P2Q2/PP4PP/R5K1 b - - ; bm a1a1 >5rr1/p2qbR1p/1kn5/1p2B3/3P4/2P2Q2/PP4PP/4R1K1 b - - ; bm a1a1 >4qRr1/p3b2p/1kn5/1p2B3/3P4/2P2Q2/PP4PP/4R1K1 b - - ; bm a1a1 >5qr1/p3b2p/1kn5/1p1QB3/3P4/2P5/PP4PP/4R1K1 b - - ; bm a1a1 >5q2/p3b2p/1kn5/1p1QB1r1/P2P4/2P5/1P4PP/4R1K1 b - - ; bm a1a1 >5q2/p3b2p/1kn5/3QB1r1/p1PP4/8/1P4PP/4R1K1 b - - ; bm a1a1 >5q2/p3b2p/1k6/3QR1r1/p1PP4/8/1P4PP/6K1 b - - ; bm a1a1 >5q2/p3b2p/1k6/4Q3/p1PP4/8/1P4PP/6K1 b - - ; bm a1a1 >3q4/p3b2p/1k6/2P1Q3/p2P4/8/1P4PP/6K1 b - - ; bm a1a1 >3q4/p3b2p/8/1kP5/p2P4/8/1P2Q1PP/6K1 b - - ; bm a1a1 >3q4/p3b2p/8/2P5/pk1P4/3Q4/1P4PP/6K1 b - - ; bm a1a1 > >Note that these were produced by Vincent. I had to edit them as he had >bad castling status. Note also that the "best move" is nonsense, but in >these positions, "best move" is not important. > >How to run the test: > >1. set some search time limit with the st=n command. > >2. type "test filename" where the above file is used. > >Run this with mt=0 and mt=2. > >Now comes the fun. For each position in the mt=0 run, find the _last_ >bit of output, such as a PV change or the end of iteration. Write the >time down. Flip to the mt=2 run and for that position, find the _same_ >depth/score/move output and write down that time. Now you can compute >a speedup for that position. > >Repeat for all 24 positions and you have 24 speedups. > >Now you come to a decision point. If you do as I said above, you will then >average the 24 speedups to get an overall speedup. But this is just one way >to do it, because this counts all positions equally in the final speedup. >But suppose some positions have a much longer "time" value? In a real game, >won't their speedup affect the overall average "more"? So you might choose to >go back and take the times as derived above, add them together, and _then_ >divide the mt=2 time into the mt=0 time to compute an overall speedup. > >There is also another way but it is not as easy... > >use st=999999, sd=N to specify a specific search depth for every position to >be searched to. Then you can use the total elapsed time for mt=0 and divide >that by the total elapsed time for mt=2, and compute the speedup that way. >The drawback is that if you pick too deep a search, some positions will take a >_long_ time. If you pick it too shallow, some will finish very quickly. > >You _can_ get at least three different speedup values from the above, and which >one you use is really optional...
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.