Author: George Sobala
Date: 02:39:01 12/31/05
I am not entirely convinced that the 64-bit version of Rybka really gives a 60% speed-up. It may be that Opterons just run the 32-bit version really slowly, e.g. compared to the 32 bit version on a Pentium M. Please post your Rybka analysis from the start position, state which Rybka version you have and your CPU. For starters, here is Rybka 1.01 Beta 7 w32 on a Pentium 1.6GHz 00:00:00.0 0.07 3 250 Nc3 00:00:00.0 0.03 4 422 Nc3 00:00:00.0 0.08 5 1515 Nc3 Nc6 00:00:00.0 0.03 6 2016 Nc3 Nc6 Nf3 00:00:00.0 0.05 7 8411 Nc3 Nc6 Nf3 Nf6 00:00:00.1 0.07 8 9060 Nc3 Nc6 Nf3 Nf6 d4 00:00:00.4 0.05 9 34330 Nc3 Nf6 d4 d5 Bf4 Bf5 00:00:00.9 0.03 10 75694 Nc3 Nf6 d4 d5 Nf3 Nc6 Qd3 00:00:02.6 0.07 11 229260 Nc3 Nf6 d4 d5 Nf3 Nc6 e3 Qd6 00:00:05.0 0.05 12 436401 Nc3 Nf6 d4 e6 Nf3 Nc6 d5 Nb4 e4 00:00:10.7 0.06 13 957532 Nc3 Nf6 d4 e6 Nf3 Nc6 e3 d5 Bd3 Bd6 00:00:27.8 0.04 14 2536307 Nc3 Nf6 d4 d5 Nf3 Nc6 e3 e6 Bd3 Bd6 Nb5 or direct from the CLI: uci id name Rybka 1.01 Beta 7 32-bit id author Vasik Rajlich option name Hash type spin min 2 max 4096 default 32 option name Clear Hash type button option name Ponder type check default true option name MultiPV type spin min 1 max 20 default 1 option name Search Direction type combo default Very Positional var Very Positio nal var Slightly Positional var Slightly Tactical var Very Tactical option name Time Management type combo default Normal var Slow var Normal var Fa st uciok isready readyok position startpos go infinite info depth 3 info depth 3 score cp 7 time 1 nodes 250 nps 256000 pv b1c3 info depth 3 time 1 nodes 290 nps 296960 info depth 4 info depth 4 score cp 3 time 1 nodes 422 nps 432128 pv b1c3 info depth 4 time 11 nodes 1318 nps 122693 info depth 5 info depth 5 score cp 8 time 11 nodes 1515 nps 141032 pv b1c3 b8c6 info depth 5 time 11 nodes 1643 nps 152948 info depth 6 info depth 6 score cp 3 time 21 nodes 2726 nps 132924 pv b1c3 b8c6 g1f3 info depth 6 time 31 nodes 4747 nps 156804 info depth 7 info depth 7 score cp 5 time 51 nodes 7701 nps 154624 pv b1c3 b8c6 g1f3 g8f6 info depth 7 time 81 nodes 6009 nps 75965 info depth 8 info depth 8 score cp 7 time 111 nodes 9060 nps 83580 pv b1c3 b8c6 g1f3 g8f6 d2d 4 info depth 8 time 151 nodes 11814 nps 80116 info depth 9 info depth 9 score cp 5 time 401 nodes 34330 nps 87665 pv b1c3 g8f6 d2d4 d7d5 c1 f4 c8f5 info depth 9 time 482 nodes 41615 nps 88410 info depth 10 info depth 10 score cp 3 time 852 nodes 75694 nps 90974 pv b1c3 g8f6 d2d4 d7d5 g 1f3 b8c6 d1d3 info currmove b1a3 currmovenumber 2 info currmove d2d3 currmovenumber 3 info currmove d2d4 currmovenumber 4 info currmove b2b3 currmovenumber 5 info currmove a2a3 currmovenumber 6 info currmove a2a4 currmovenumber 7 info currmove b2b4 currmovenumber 8 info currmove c2c4 currmovenumber 9 info currmove c2c3 currmovenumber 10 info currmove e2e4 currmovenumber 11 info currmove e2e3 currmovenumber 12 info currmove f2f4 currmovenumber 13 info currmove f2f3 currmovenumber 14 info currmove g2g4 currmovenumber 15 info currmove g2g3 currmovenumber 16 info currmove h2h4 currmovenumber 17 info currmove h2h3 currmovenumber 18 info currmove g1f3 currmovenumber 19 info currmove g1h3 currmovenumber 20 info depth 10 time 1153 nodes 99452 nps 88325 info depth 11 info currmove b1c3 currmovenumber 1 info depth 11 score cp 7 time 2565 nodes 229260 nps 91525 pv b1c3 g8f6 d2d4 d7d5 g1f3 b8c6 e2e3 d8d6 info currmove b1a3 currmovenumber 2 info currmove d2d3 currmovenumber 3 info currmove d2d4 currmovenumber 4 info currmove b2b3 currmovenumber 5 info currmove a2a3 currmovenumber 6 info currmove a2a4 currmovenumber 7 info currmove b2b4 currmovenumber 8 info currmove c2c4 currmovenumber 9 info currmove c2c3 currmovenumber 10 info currmove e2e4 currmovenumber 11 info currmove e2e3 currmovenumber 12 info currmove f2f4 currmovenumber 13 info currmove f2f3 currmovenumber 14 info currmove g2g4 currmovenumber 15 info currmove g2g3 currmovenumber 16 info currmove h2h4 currmovenumber 17 info currmove h2h3 currmovenumber 18 info currmove g1f3 currmovenumber 19 info currmove g1h3 currmovenumber 20 info depth 11 time 2805 nodes 248198 nps 90607 info depth 12 info currmove b1c3 currmovenumber 1 info depth 12 score cp 5 time 4828 nodes 436401 nps 92558 pv b1c3 g8f6 d2d4 e7e6 g1f3 b8c6 d4d5 c6b4 e2e4 info currmove b1a3 currmovenumber 2 info currmove d2d3 currmovenumber 3 info currmove d2d4 currmovenumber 4 info currmove b2b3 currmovenumber 5 info currmove a2a3 currmovenumber 6 info currmove a2a4 currmovenumber 7 info currmove b2b4 currmovenumber 8 info currmove c2c4 currmovenumber 9 info currmove c2c3 currmovenumber 10 info currmove e2e4 currmovenumber 11 info currmove e2e3 currmovenumber 12 info currmove f2f4 currmovenumber 13 info currmove f2f3 currmovenumber 14 info currmove g2g4 currmovenumber 15 info currmove g2g3 currmovenumber 16 info currmove h2h4 currmovenumber 17 info currmove h2h3 currmovenumber 18 info currmove g1f3 currmovenumber 19 info currmove g1h3 currmovenumber 20 info depth 12 time 5859 nodes 528839 nps 92427 info depth 13 info currmove b1c3 currmovenumber 1 info depth 13 score cp 6 time 10486 nodes 957532 nps 93506 pv b1c3 g8f6 d2d4 e7e 6 g1f3 b8c6 e2e3 d7d5 f1d3 f8d6 info currmove b1a3 currmovenumber 2 info currmove d2d3 currmovenumber 3 info currmove d2d4 currmovenumber 4 info currmove b2b3 currmovenumber 5 info currmove a2a3 currmovenumber 6 info currmove a2a4 currmovenumber 7 info currmove b2b4 currmovenumber 8 info currmove c2c4 currmovenumber 9 info currmove c2c3 currmovenumber 10 info currmove e2e4 currmovenumber 11 info currmove e2e3 currmovenumber 12 info currmove f2f4 currmovenumber 13 info currmove f2f3 currmovenumber 14 info currmove g2g4 currmovenumber 15 info currmove g2g3 currmovenumber 16 info currmove h2h4 currmovenumber 17 info currmove h2h3 currmovenumber 18 info currmove g1f3 currmovenumber 19 info currmove g1h3 currmovenumber 20 info depth 13 time 13460 nodes 1230436 nps 93608 info depth 14 info currmove b1c3 currmovenumber 1 info depth 14 score cp 4 time 27420 nodes 2536307 nps 94718 pv b1c3 g8f6 d2d4 d7 d5 g1f3 b8c6 e2e3 e7e6 f1d3 f8d6 c3b5
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