NATIONAL12 wrote:zamar wrote:Theodor wrote:NATIONAL12 wrote:Theodor wrote:The new stockfish has a bugg. To 8 cores he works very,very slow!
Up to 4 cores the speed is normal.
works well enough on my 8 and 12 cpu machines but only to max 8 cpu.
Impossible !!
Give him a 3' game and look at the average of k/N/s : 4-500 instead
7-8000 and depth : 11-13 instead 19-22.
Sorry to hear that
Many people have reported success using 1.8 with 8 threads. SF team doesn't have 8CPU computer, so we are unable to even test this
But perhaps you could do a little experiment.
Check average kN/s value with different threads value:
1 threads: kN/s
2 threads: kN/s
...
8 threads: kN/s
At which point you start to observe problems??
in position i was looking at in one of my games i was getting 9,500 kN/s on my Skulltrail and17,000 kN/s on my 12 cpu comp despite only running on max 8 cpu.both runs were for over an hour.
[Event ", Blitz 4m+2s"]
[Site "PAULWATSON-PC"]
[Date "2010.10.03"]
[Round "1"]
[White "Deep Rybka 4 SSE42 x64"]
[Black "Stockfish 1.9 JA 64bit"]
[Result "1-0"]
[ECO "B33"]
[Annotator "0.48;0.00"]
[PlyCount "95"]
[TimeControl "240+2"]
{Intel(R) Xeon(R) CPU X5680 @ 3.33GHz 4187 MHz W=16.7 plies; 777kN/
s; 342 TBAs; Masterbook 3.0.ctg B=22.0 plies; 13,610kN/s; Masterbook 3.0.ctg}
1. e4 {B 0} c5 {B 0} 2. Nc3 {B 0} e6 {B 0} 3. Nf3 {B 0} Nc6 {B 0} 4. d4 {B 0}
cxd4 {B 0} 5. Nxd4 {B 0} Nf6 {B 0} 6. Ndb5 {B 0} d6 {B 0} 7. Bf4 {B 0} e5 {B 0}
8. Bg5 {B 0} a6 {B 0} 9. Na3 {B 0} b5 {B 0} 10. Nd5 {B 0} Qa5+ {B 0 Both last
book move} 11. Bd2 {0.48/16 6} Qd8 {0.00/22 6} 12. Bd3 {0.54/18 7} Be7 {0.48/
22 9 (Bd7)} 13. c4 {0.59/18 19 (0-0)} Nxd5 {0.60/21 13 (bxc4)} 14. exd5 {0.58/
19 14} Nd4 {0.56/23 6} 15. cxb5 {0.69/18 10 (0-0)} O-O {0.56/23 9} 16. O-O {0.
69/17 9} Bb7 {0.72/23 6 (Qd7)} 17. bxa6 {0.74/18 16 (Be3)} Bxa6 {0.64/22 7} 18.
Bc3 {0.72/20 12 (Bxa6)} Qb6 {0.60/23 6} 19. Re1 {0.74/19 12} Bh4 {0.56/24 10
(Bg5)} 20. Bxa6 {0.81/18 14} Qxa6 {0.68/23 8} 21. Nc2 {0.81/18 9 (Bxd4)} Nb5 {
0.64/21 11} 22. Bb4 {0.84/18 21} Rfb8 {0.72/21 10} 23. a4 {0.99/16 3 (a3)} Nd4
{1.01/21 7} 24. Bc3 {1.01/16 3} Nxc2 {1.01/22 19} 25. Qxc2 {1.01/16 1} Bg5 {1.
13/21 10 (Rc8)} 26. Qe2 {1.27/16 8 (a5)} Qxe2 {1.09/21 9 (Qb7)} 27. Rxe2 {1.27/
14 1} Rc8 {1.13/24 16 (f5)} 28. a5 {1.46/18 8 (Bb4)} Rc4 {1.21/20 6 (Kf8)} 29.
a6 {1.54/18 10 (Ree1)} f5 {1.21/22 7 (Kf8)} 30. Be1 {1.81/19 10 (Ree1)} Kf7 {
1.41/24 8 (Rc5)} 31. b4 {1.83/19 5} Bd8 {1.41/25 8} 32. b5 {1.97/19 8} Ke7 {1.
37/25 5 (Ke8)} 33. f4 {2.19/17 4 (Rb1)} Bb6+ {1.69/22 7} 34. Bf2 {2.19/18 2}
Bxf2+ {2.06/23 11} 35. Rxf2 {2.19/18 2} Rb4 {2.62/21 10} 36. Ra5 {2.46/17 6}
Kd7 {2.86/21 10 (exf4)} 37. fxe5 {3.27/14 2} dxe5 {3.23/20 8} 38. Rxf5 {3.39/
15 1} Kd6 {3.39/20 6 (Rb1+)} 39. a7 {3.78/17 8 (Rf7)} Kxd5 {3.63/20 7 (Rb1+)}
40. Rf7 {4.05/15 3} Rb1+ {3.55/22 4} 41. Kf2 {4.22/16 1} Rb2+ {4.36/24 16} 42.
Kf3 {4.50/16 8 (Ke3)} Rb3+ {4.44/21 4} 43. Kg4 {5.02/13 1 (Ke2)} Rb4+ {4.64/19
7 (h5+)} 44. Kh3 {6.62/12 3 (Kh5)} Rb3+ {5.21/18 4 (Kc5)} 45. g3 {7.41/13 1
(Kh4)} e4 {9.85/21 9 (Kc5)} 46. Rb7 {7.78/15 3} Rxa7 {10.46/22 6} 47. Rbxa7 {
8.17/16 2} Kc4 {11.07/24 8 (h6)} 48. Ra4+ {10.32/16 32 (Rxg7)} 1-0