Minic version 3

[xr_a_y]

no, but it works in the normal skylake compile

and a 0-20 result against Clover 2.4 is not normal ?
there must be an issue

34 Minic 3.13NN x64 1CPU 3159
40 Clover 2.4 x64 1CPU 3141

issue with the avx512 build ?

[Werner]

Yes, normal result should be 10-10

Shall I repeat with the normal skylake compile 1-2 h ?

[xr_a_y]

Yes, normal result should be 10-10

Shall I repeat with the normal skylake compile 1-2 h ?

I think you can go with the skylake build. I removed the avx512 from the repo and try to work on it later. Won't be fixed for 3.16.

Thanks a lot

[xr_a_y]

ok I had the opporunity to try AVX512 build on a Intel(R) Xeon(R) Silver 4116 CPU @ 2.10GHz compatible with AVX512 instruction set used for NNUE evaluation.

Minic-avx2 is at 530knps while Minicavx512 is around 300knps. For information, in Minic I was using pretty much the same code as the one in openblas for the dot product.

I then tried Seer-avx2 that was at 570knps while Seer-avx512 was a 390knps

It seems using avx512 is maybe decreasing the frequency of the cpu too much and lead to counter-performance in the end.

I have thus removed the avx512 instruction from the repo for the moment, and removed avx512 build of Minic3.16.
Please do not use it if you have already downloaded it.

This will be investigating later again.

[Werner]

Yes, this compile works much better: (40 moves in 2 min)
Minic 3.16 x64 1CPU - Clover 2.4 x64 1CPU : 31,5/52 17-6-29 61% +78

[CMCanavessi]

3.16 says "TCEC Only". Should we use 3.14?

[Guenther]

ok I had the opporunity to try AVX512 build on a Intel(R) Xeon(R) Silver 4116 CPU @ 2.10GHz compatible with AVX512 instruction set used for NNUE evaluation.

Minic-avx2 is at 530knps while Minicavx512 is around 300knps. For information, in Minic I was using pretty much the same code as the one in openblas for the dot product.

...

That speed diff alone will never explain a 0:20 vs. Clover though...

@Werner are those games available somewhere for checking?

[Werner]

Yes Guenther,
I sent you an email - hope the adress is working.

[Werner]

Game 1
[pgn] [Event "26b"]
[Site "MSI"]
[Date "2021.10.13"]
[Round "1"]
[White "Minic 3.16AVX512"]
[Black "Clover 2.4 x64 1CPU"]
[Result "0-1"]
[BlackElo "2200"]
[Time "23:22:19"]
[WhiteElo "2200"]
[TimeControl "40/120:40/120:40/120"]
[Termination "normal"]
[PlyCount "115"]
[WhiteType "human"]
[BlackType "program"]

1. Nc3 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. g3 Qc7 6. Bg2 Nf6 7. O-O Be7
8. a4 Nc6 9. e4 {+0.62/16 3} O-O {-0.04/20 3} 10. Nxc6 {+0.46/16 2} dxc6
{-0.01/24 3} 11. Be3 {+0.54/16 3} a5 {+0.01/24 3} 12. h3 {+1.20/17 2} Rd8
{+0.05/21 3} 13. Qe2 {+1.35/17 3} b6 {+0.01/24 3} 14. Rfd1 {+1.11/18 3}
Rxd1+ {+0.01/25 3} 15. Qxd1 {+1.05/16 2} Ba6 {+0.19/21 3} 16. Qe1 {+1.03/17
2} Rd8 {+0.10/23 3} 17. Kh2 {+1.05/18 2} e5 {+0.05/23 4} 18. f4 {+1.04/16
2} Nd7 {+0.18/24 3} 19. f5 {+1.46/15 3} Bc5 {+0.26/26 3} 20. Bg5 {+1.51/14
3} Nf6 {+0.47/25 3} 21. Bxf6 {+1.12/16 3} gxf6 {+1.04/26 3} 22. h4
{+0.21/20 13} Bb4 {+1.19/24 3} 23. Bf3 {+0.26/19 12} Rd4 {+1.23/25 3} 24.
Qe3 {+0.35/21 2} Qd8 {+1.64/26 4} 25. Rg1 {-0.02/21 8} Rd2+ {+1.71/24 3}
26. Rg2 {-0.22/23 7} Rxg2+ {+1.21/26 3} 27. Kxg2 {-0.90/19 1} Bc5 {+1.79/25
3} 28. Qc1 {+1.87/11} Qd4 {+1.95/23 3} 29. Qe1 {-0.48/19 1} Kg7 {+1.63/25
4} 30. g4 {-0.92/18} h6 {+2.09/24 3} 31. Be2 {-2.41/19 2} Bxe2 {+2.10/26 3}
32. Qxe2 {-2.23/23 1} Qg1+ {+2.03/25 3} 33. Kh3 {-2.46/20 3} Bf2 {+2.39/28
3} 34. Qf3 {-1.65/19 1} Qf1+ {+2.59/30 3} 35. Qg2 {-2.51/22} Qe1 {+2.87/28
3} 36. Qf3 {-2.80/26 1} Bxh4 {+3.04/26 3} 37. b3 {-1.95/24 1} Bf2 {+2.99/27
3} 38. Kg2 {-1.69/18} Qg1+ {+3.21/26 3} 39. Kh3 {-3.59/20 2} Qf1+ {+3.30/30
3} 40. Qg2 {-4.40/21 2} Qe1 {+3.19/27 3} 41. Qf3 {-4.55/26 10} Qf1+
{+3.06/27 3} 42. Qg2 {-3.94/21} Qe1 {+3.23/27 3} 43. Qf3 {-3.96/27 12} Kf8
{+3.13/27 3} 44. Nd1 {-4.88/26 15} Bd4 {+3.98/24 3} 45. Qd3 {-3.98/16} Kg7
{+4.05/23 2} 46. Kg2 {-5.03/20 2} b5 {+3.88/24 2} 47. axb5 {-6.27/23 17}
cxb5 {+5.54/21 3} 48. c3 {-7.43/19 1} Ba7 {+6.26/24 3} 49. Qc2 {-8.38/22
12} Qg1+ {+7.21/25 4} 50. Kh3 {-11.27/22 9} Qf1+ {+8.22/23 4} 51. Kg3
{-11.57/16} Qf4+ {+8.56/23 2} 52. Kg2 {-6.18/12} Qxg4+ {+9.36/23 2} 53. Kf1
{-8.35/13} Qg1+ {+14.25/24 4} 54. Ke2 {-4.47/12} h5 {+16.09/23 9} 55. Kd2
{-8.06/17 1} Qg5+ {+19.40/25 5} 56. Ke2 {-13.29/23 6} h4 {+20.93/24 6} 57.
Qd2 {-13.05/19 1} Qg2+ {+23.67/21 2} 58. Kd3 {-14.31/18 Arena
Entscheidung} 0-1 [/pgn]

I get diffent evals when using AVX2 compile. e.g. move 24 Qe3 -0.94/21 instead of + 0.35/21

actual result with avx2 Minic 3.16 x64 1CPU - Clover 2.4 x64 1CPU : 26,0/46 14-8-24 57% +49

[xr_a_y]

3.16 says "TCEC Only". Should we use 3.14?

3.16 can be used. I will fix the release note.