Giraffe on Threadripper + newest GPUs

[Hai]

Is Giraffe on this hardware already at super GM level or above?

[Dann Corbit]

Giraffe does not use GPUs, but only CPUs.
All things are possible. But someone will have to do the work.
The original author has moved onto GO.
IIRC

[Werewolf]

Is Giraffe on this hardware already at super GM level or above?

No.

I've been playing with it over the last few days. It seems to be single core CPU.

The neural net approach is interesting, but Giraffe is not very strong, maybe 2300 elo. Also, another misconception, I think its eval is actually pretty weak too - and this was where the NN work was done.

[Werewolf]

[Date "2017.08.17"]
[White "MChess Pro 3.5"]
[Black "Giraffe w64"]
[Result "1-0"]


1. e4 {0} e6 {0} 2. d4 {14} d5 {0} 3. e5 {7} c5 {0} 4. c3 {6} Nc6 {0}
5. Nf3 {6} Bd7 {0} 6. Be2 {6} Qc7 {0} 7. O-O {19} f6 {0}
8. Bf4 {8} Nge7 {0} 9. Bg3 {6} Nf5 {4} 10. exf6 {6} Nxg3 {3}
11. f7+ {6} Kxf7 {3} 12. fxg3 {10} Kg8 {3} 13. dxc5 {6} Bxc5+ {3}
14. Kh1 {7} Rf8 {4} 15. c4 {8} Ne7 {3} 16. Nc3 {25} Rf5 {2}
17. Bd3 {14} Rh5 {2} 18. Nh4 {17} Be8 {3} 19. Qf3 {15} Nc6 {2}
20. cxd5 {9} Ne5 {4} 21. Qe2 {9} Nxd3 {2} 22. Qxd3 {5} g5 {3}
23. Ne4 {20} gxh4 {3} 24. Qc3 {21} Re5 {2} 25. Nxc5 {15} Bf7 {2} 26. dxe6 {13} Qxc5 {2} 27. exf7+ {6} Kg7 {2} 28. Qf3 {9} Re6 {2}
29. Rae1 {14} Rh6 {2} 30. Re5 {19} Qd6 {2} 31. Rg5+ {6} Rg6 {3}
32. Qc3+ {18} Kh6 {2} 33. Rxg6+ {7} Kxg6 {2} 34. Qxh8 {8} a6 {2}
35. f8=N+ {13} Kg5 {2} 36. Qg7+ {8} Qg6 {2}
37. Nxh7+ {6} Kh5 {2} 38. g4+ {6} Qxg4 {2} 39. Nf6# {5} 1-0

MChess. Let that sink in for a bit...

Having said that, I was a fan of his while it was being developed and I hope someone else develops a NN engine...

[Hai]

Is Giraffe on this hardware already at super GM level or above?

No.

I've been playing with it over the last few days. It seems to be single core CPU.

The neural net approach is interesting, but Giraffe is not very strong, maybe 2300 elo. Also, another misconception, I think its eval is actually pretty weak too - and this was where the NN work was done.

Ok at low level 2300 elo this could bring with 16 cores (1->2->4->8->16) maybe +400 elo = 2700 elo?
Maybe somebody can change it to use more cores, so we can do some tests.

[Werewolf]

You'd have to re-write the entire program to be SMP. Giraffe is over, unless the author decides to continue the project.

[brianr]

Actually, some feel that the Giraffe eval is quite strong, but this is masked by it being very very slow.
See Peter Osterlund's Texel/Giraffe hybrid tests.

http://talkchess.com/forum/viewtopic.php?t=64096

Also, the Giraffe paper compares the eval vs other engines, including time adjustments.