Author: Slater Wold
Date: 03:23:11 09/25/01
Go up one level in this thread
On September 25, 2001 at 03:07:18, Jouni Uski wrote: >On September 25, 2001 at 01:29:09, Uri Blass wrote: > >>On September 24, 2001 at 20:33:21, Slater Wold wrote: >> >>>On September 24, 2001 at 19:35:51, Uri Blass wrote: >>> >>>>On September 24, 2001 at 19:10:43, Dann Corbit wrote: >>>> >>>>>There is no problem with crafty. >>>>>It's a problem with the counters. >>>>> >>>>>The biggest number a long can hold is about 2 billion. >>>>> >>>>>That overflows very easily. >>>>> >>>>>If you let crafty run for more than a few minutes, the NPS figures have no >>>>>meaning. You used to be able to get negative values, but I think at least that >>>>>has been fixed. >>>> >>>>Note that based on my experience of long analysis >>>>Deep Fritz has not the same problem. >>>> >>>>Uri >>> >>>You're correct: >>> >>>W,S - Deep Junior 7 >>>rnbqk2r/1p3ppp/p7/1NpPp3/QPP1P1n1/P4N2/4KbPP/R1B2B1R b kq - 0 1 >>> >>>Analysis by Deep Junior 7: >>> >>>1...cxb4 2.Nc7+ Kf8 3.Qxb4+ Kg8 4.Nxa8 >>> +- (1.99) Depth: 3 00:00:01 >>>1...Kf8 2.Bg5 >>> ³ (-0.30) Depth: 3 00:00:01 1kN >>>1...Kf8 2.Bg5 >>> ³ (-0.30) Depth: 3 00:00:01 1kN >>>1...Kf8 2.Bg5 >>> ³ (-0.30) Depth: 3 00:00:01 1kN >>>1...0-0 2.h3 cxb4 3.axb4 Bd7 4.hxg4 >>> ³ (-0.32) Depth: 3 00:00:01 4kN >>>1...0-0 2.h3 Bd7 3.hxg4 axb5 >>> ³ (-0.52) Depth: 6 00:00:01 8kN >>>1...0-0 2.h3 Bg3 3.hxg4 Bxg4 4.Nc3 cxb4 5.axb4 >>> = (-0.09) Depth: 9 00:00:01 148kN >>>1...0-0 2.h3 Bg3 3.hxg4 Bxg4 4.Nc3 Nd7 5.Be3 cxb4 >>> ² (0.48) Depth: 12 00:00:02 2256kN >>>1...Nc6 2.Bg5 f6 3.dxc6 0-0 4.c7 Qd7 5.Bh4 Bxh4 6.Nxh4 Qc6 7.Nc3 Qxc7 >>> ² (0.47) Depth: 12 00:00:05 3016kN >>>1...Nd7 2.Nd6+ Kf8 3.Ng5 Bd4 4.Ndxf7 Qf6 5.Rb1 Bg1 6.Nf3 Nb6 7.Qc2 Kxf7 8.Rxg1 >>>cxb4 9.c5 Nd7 10.axb4 >>> = (0.06) Depth: 12 00:00:09 9620kN >>>1...Nd7 2.Nd6+ Kf8 3.h3 Nb6 4.Qe8+ >>> = (0.05) Depth: 15 00:00:43 86103kN >>>1...Nd7 2.Nd6+ Kf8 3.h3 Nb6 4.Qe8+ Qxe8 5.Nxe8 Kxe8 6.hxg4 Bd4 7.Nxd4 cxd4 8.Kf3 >>>Ke7 9.c5 Nd7 10.Bg5+ Nf6 >>> ± (0.81) Depth: 18 00:08:19 900744kN >>>1...0-0 2.h3 Bd4 3.Nbxd4 Nf6 4.Qc2 cxd4 5.Kf2 h6 6.Be2 Nbd7 7.Rf1 >>> ² (0.43) Depth: 18 00:09:40 900744kN >>>1...0-0 2.h3 Bd4 3.Nbxd4 Nf6 4.Qc2 cxd4 5.Kf2 a5 6.Bd2 Bd7 7.Be2 axb4 8.axb4 >>> ² (0.58) Depth: 20 00:31:35 3409915kN >>> >>>(W, 24.09.2001) >>> >>>3,409,915,000 nodes. And not the correct solution. :( >>> >>>(This is Nolot #6.) >>> >>> >>>Slate >> >>3,409,915,000<2^32 >> >>The real test is when the number of nodes is bigger than 2^32 >> >>Deep Fritz has no problem but I do not know remember other chessbase programs >>that can report more than 2^32 nodes >> >>Uri > >Yes I hope, that in future all engines can handle 64b node counter. Specially >annoying is Goliath, which can reach 2^32 quite fast because of extreme NPS! > >Jouni DJ7, DF and Crafty all get from 1.5~2.0M nps. It doesn't take long........ With todays hardware rapidly getting faster, I think it's time to "rethink" how to display analysis up to at least 1 trillion nodes. Slate
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