Author: Robert Hyatt
Date: 18:51:03 03/07/06
Go up one level in this thread
On March 07, 2006 at 19:19:05, Stuart Cracraft wrote: >On March 07, 2006 at 15:49:27, Robert Hyatt wrote: > >>On March 07, 2006 at 02:27:24, Tony Werten wrote: >> >>>On March 07, 2006 at 00:35:43, Stuart Cracraft wrote: >>> >>>>On March 07, 2006 at 00:25:46, Stuart Cracraft wrote: >>>> >>>>>On March 06, 2006 at 22:50:44, Dann Corbit wrote: >>>>> >>>>>>Looks like king safety to me: >>>>>>[D] r4rk1/1p2ppbp/p2pbnp1/q7/3BPPP1/2N2B2/PPP4P/R2Q1RK1 b - - bm Bxg4 >>>>> >>>>>An extended search could not crack the 10th ply aspiration search fail high >>>>>on this position. I do not know what was about to happen, only that it >>>>>would take a long time. >>>>> >>>>>.sd 99 >>>>>maxdepth = 99 maxtime = 9999999 timed = 0 >>>>>.ts >>>>>position file? [wac.epd] retry.epd >>>>># of test positions to test? 1 >>>>>maxtime = 9999999 >>>>>Interrupt current ply and return move at timeout >>>>>Testsuite: Tests/retry.epd 1 positions >>>>>*** Problem Solution(s): Bxg4 (bm) >>>>>[D] r4rk1/1p2ppbp/p2pbnp1/q7/3BPPP1/2N2B2/PPP4P/R2Q1RK1 b - - bm Bxg4 >>>>>*** Problem Solution(s): Bxg4 (bm) >>>>>BR ** -- ** -- BR BK ** >>>>>** BP ** -- BP BP BB BP >>>>>BP ** -- BP BB BN BP ** >>>>>BQ -- ** -- ** -- ** -- >>>>>-- ** -- WB WP WP WP ** >>>>>** -- WN -- ** WB ** -- >>>>>WP WP WP ** -- ** -- WP >>>>>WR -- ** WQ ** WR WK -- >>>>>mv 1 stage 0, black to move, computer plays black >>>>>hash=5076cc275e393397 >>>>>pawnhash=3d032756da421438 >>>>>0 0 0 0 0 0 >>>>>Alpha=999 Beta=1800 Maxdepth=99 MaxTime=9999999 xboard=0 >>>>>Itr/Max Mv Score Time Nodes PV >>>>> 1/ 5 f6g4 1400 0.00 57 f6g4 >>>>> 2/10 f6g4 1347 0.01 385 f6g4 f3e2 g7d4 d1d4 >>>>> 3/10< f6g4 946 0.03 1959 f6g4 f3e2 g7d4 d1d4 f7f6 >>>>> 3/10 f6g4 945 0.05 2925 f6g4 d4g7 g8g7 f3g4 >>>>> 4/12< f6g4 544 0.10 6880 f6g4 d4g7 g8g7 f3g4 f7f6 >>>>> 4/15 a5d8 -241 0.25 17921 a5d8 g1g2 >>>>> 5/21 e6c4 -35 0.46 33988 e6c4 f3e2 a5c7 >>>>> 6/21 h7h5 -40 1.30 101881 h7h5 g4g5 f6d7 d4g7 g8g7 >>>>> 7/21 a5b4 -104 2.96 235870 a5b4 g4g5 f6h5 d4g7 h5g7 a1b1 a8c8 >>>>> 8/22 a5b4 -145 6.09 498480 a5b4 a2a3 b4b2 c3d5 b2b5 d5e7 g8h8 a1b1 >>>>> 9/24 e6c4 -79 11.79 991796 e6c4 f1f2 e7e5 d4e3 a5d8 a2a4 >>>>>10/24> e6c4 321 30.18 2576527 e6c4 f1f2 e7e5 d4e3 a5b4 g4g5 f6d7 f4e5 g7e5 >>>>>10/ >>>> >>>>The search kept going and did find the move but it took almost 15 minutes. >>>> >>>>position file? [wac.epd] retry.epd >>>># of test positions to test? 1 >>>>maxtime = 9999999 >>>>Interrupt current ply and return move at timeout >>>>Testsuite: Tests/retry.epd 1 positions >>>>*** Problem Solution(s): Bxg4 (bm) >>>>[D] r4rk1/1p2ppbp/p2pbnp1/q7/3BPPP1/2N2B2/PPP4P/R2Q1RK1 b - - bm Bxg4 >>>>*** Problem Solution(s): Bxg4 (bm) >>>>BR ** -- ** -- BR BK ** >>>>** BP ** -- BP BP BB BP >>>>BP ** -- BP BB BN BP ** >>>>BQ -- ** -- ** -- ** -- >>>>-- ** -- WB WP WP WP ** >>>>** -- WN -- ** WB ** -- >>>>WP WP WP ** -- ** -- WP >>>>WR -- ** WQ ** WR WK -- >>>>mv 1 stage 0, black to move, computer plays black >>>>hash=5076cc275e393397 >>>>pawnhash=3d032756da421438 >>>>0 0 0 0 0 0 >>>>Alpha=999 Beta=1800 Maxdepth=99 MaxTime=9999999 xboard=0 >>>>Itr/Max Mv Score Time Nodes PV >>>> 1/ 5 f6g4 1400 0.00 57 f6g4 >>>> 2/10 f6g4 1347 0.01 385 f6g4 f3e2 g7d4 d1d4 >>>> 3/10< f6g4 946 0.03 1959 f6g4 f3e2 g7d4 d1d4 f7f6 >>>> 3/10 f6g4 945 0.05 2925 f6g4 d4g7 g8g7 f3g4 >>>> 4/12< f6g4 544 0.10 6880 f6g4 d4g7 g8g7 f3g4 f7f6 >>>> 4/15 a5d8 -241 0.25 17921 a5d8 g1g2 >>>> 5/21 e6c4 -35 0.46 33988 e6c4 f3e2 a5c7 >>>> 6/21 h7h5 -40 1.30 101881 h7h5 g4g5 f6d7 d4g7 g8g7 >>>> 7/21 a5b4 -104 2.96 235870 a5b4 g4g5 f6h5 d4g7 h5g7 a1b1 a8c8 >>>> 8/22 a5b4 -145 6.09 498480 a5b4 a2a3 b4b2 c3d5 b2b5 d5e7 g8h8 a1b1 >>>> 9/24 e6c4 -79 11.79 991796 e6c4 f1f2 e7e5 d4e3 a5d8 a2a4 >>>>10/24> e6c4 321 30.18 2576527 e6c4 f1f2 e7e5 d4e3 a5b4 g4g5 f6d7 f4e5 g7e5 >>>>10/25 e6g4 1344 863.20 4198040 e6g4 e4e5 d6e5 f4e5 g4f3 d1f3 a5b4 f3e3 f6g4 >>>>11/26 e6g4 1032 889.10 6506793 e6g4 e4e5 d6e5 f4e5 g4f3 d1f3 a5b4 a1d1 f6h5 >>>>b2b3 >>>>12/30 e6g4 1261 957.00 12603674 e6g4 f3g4 f6g4 c3d5 g7d4 d1d4 a8e8 h2h3 g4h6 >>>>b2b4 a5a3 >>>>13/32 e6g4 1285 1110.45 26675821 e6g4 f3g4 f6g4 c3d5 g7d4 d1d4 a8e8 h2h3 g4f6 >>>>d5f6 e7f6 d4d6 e8e4 b >>>>2b4 f8d8 >>>>14/ >>> >>>My guess is something is wrong with your move ordering. The failhigh on ply 10 >>>took 30 times the previous. That should not happen. >> >>There's more to it. Look at the node counts. A factor of less than 2X more >>nodes, which suggests that the machine is doing other things which makes time >>interpretation meaningless on such tests.... >> >> > >This last paragraph went completely over my head. I see the node counts >not going up 2x on between iteration. But "makes time interpretation >meaningless" -- can you elaborate? Time to fail high was 30x, but node count was only 2x. Where did the extra 15X time go if not searching more nodes? Something is fishy, most likely the cpu was not 100% busy playing chess, but was running something else also...
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