16 Core (E5-2687W) Matches and Tournaments

[ouachita]

I'll be posting such 16-core preliminary match results occasionally:

SF010214-16 v. H4B-16, Blitz 3m+0

W7, 64-bit
Fritz Chess Benchmark: 46.57
50 move book, colors reversed.
E5-2687W
SF idle threads sleep.
H contempt 0.
No PB or TB.
Hash 1024

1 Stockfish 020114 64 SSE4.2 +3 +20/=61/-19 50.50% 50.5/100
2 Houdini 4 Pro x64B -3 +19/=61/-20 49.50% 49.5/100

Hypothesis: n/a

[ouachita]

Preliminary 16-core Test Results (no hypothesis)

SF010214-16 v. H4B-16, Blitz 1m+1s 0

1 Houdini 4 Pro x64B +28 +29/=50/-21 54.00% 54.0/100
2 Stockfish 020114 64 SSE4.2 -28 +21/=50/-29 46.00% 46.0/100

SF010214-16 v. H4B-16, Blitz 3m 0

1 Stockfish 020114 64 SSE4.2 +3 +20/=61/-19 50.50% 50.5/100
2 Houdini 4 Pro x64B -3 +19/=61/-20 49.50% 49.5/100
SF idle threads sleep.

SF010214-16 v. H4B-16, Blitz 5m 0

1 Stockfish 020114 64 SSE4.2 +49 +29/=56/-15 57.00% 57.0/100
2 Houdini 4 Pro x64B -49 +15/=56/-29 43.00% 43.0/100

These are a prelude to Vincent's 16 v 8, 5+3 test.

16 cores v 1 and 1 v 16 are next.

[zullil]

I'll be posting such 16-core preliminary match results occasionally:

SF010214-16 v. H4B-16, Blitz 3m+0

W7, 64-bit
Fritz Chess Benchmark: 46.57
50 move book, colors reversed.
E5-2687W

Your workstation has two 8-core E5-2687W CPUs? Just want to be clear that you have 16 physical cores.

[ouachita]

Code: Select all

I got caught by Adam's 15 minute rule. Perhaps this is more understandable:

Preliminary 16-core Test Results (no hypothesis) 

SF010214-16 v. H4B-16, Blitz 1m+1s 0 

1 Houdini 4 Pro x64B         +28 +29/=50/-21 54.00% 54.0/100 
2 Stockfish 020114 64 SSE4.2 -28 +21/=50/-29 46.00% 46.0/100 

SF010214-16 v. H4B-16, Blitz 3m 0 

1 Stockfish 020114 64 SSE4.2   +3 +20/=61/-19 50.50% 50.5/100 
2 Houdini 4 Pro x64B           -3 +19/=61/-20 49.50% 49.5/100 

SF010214-16 v. H4B-16, Blitz 5m 0 

1 Stockfish 020114 64 SSE4.2 +49 +29/=56/-15 57.00% 57.0/100 
2 Houdini 4 Pro x64B         -49 +15/=56/-29 43.00% 43.0/100 

SF idle threads sleep in all.
 
These are a prelude to performing Vincent L's Big 3, 16 v 8/8 v 16, 5+3 test. 

16 cores v 1 and 1 v 16, 1+1 are next.

[ouachita]

Your workstation has two 8-core E5-2687W CPUs? Just want to be clear that you have 16 physical cores.

LOL, yes, of course. I assumed it was obvious but perhaps wrongly so, thanks for seeking clarity.

W7 Ultimate, 64-bit
Fritz Chess Benchmark: 46.57
50 move, Silver Test Suite/book, colors reversed.
E5-2687W (16 physical cores); no HT.
SF idle threads sleep.
H contempt 0.
No PB or TB.
Hash 1024

[zullil]

Your workstation has two 8-core E5-2687W CPUs? Just want to be clear that you have 16 physical cores.

LOL, yes, of course. I assumed it was obvious but perhaps wrongly so, thanks for seeking clarity.

W7 Ultimate, 64-bit
Fritz Chess Benchmark: 46.57
50 move, Silver Test Suite/book, colors reversed.
E5-2687W (16 physical cores); no HT.
SF idle threads sleep.
H contempt 0.
No PB or TB.
Hash 1024

Probably was obvious. But now it's certain.

Thanks.

[ouachita]

I'll run a few later on with SF 32 threads just to see if things change noticeably.

[zullil]

I'll run a few later on with SF 32 threads just to see if things change noticeably.

Not to hijack your thread, but did you find any info about a good value for Min Split Depth when Threads=16? If you are using the default, then I believe you're using Min Split Depth=7 (which might be sub-optimal for 16 threads).

[ouachita]

I'll run a few later on with SF 32 threads just to see if things change noticeably.

Not to hijack your thread, but did you find any info about a good value for Min Split Depth when Threads=16? If you are using the default, then I believe you're using Min Split Depth=7 (which might be sub-optimal for 16 threads).

No. I asked Marco who didn't reply, so he might not know either or might not have picked up his messages. Applying Clemens' theory, it should be 9 here.

[ouachita]

Code: Select all

Preliminary 16-core Test Results (no hypothesis)

W7 Ultimate, 64-bit 
Fritz Chess Benchmark: 46.57 
50 move, Silver Test Suite/book, colors reversed. 
E5-2687W (16 physical cores); no HT. 
SF idle threads sleep; Min. split depth default;
H contempt 0. 
No PB or TB. 
Hash 2048

SF010214-16 v. H4B-16, Blitz 1m+1s  0
                                      
1   Houdini 4 Pro x64B           +28  +29/=50/-21 54.00%   54.0/100
2   Stockfish 020114 64 SSE4.2   -28  +21/=50/-29 46.00%   46.0/100

SF010214-16 v. H4B-16, Blitz 3m  0
                                      
1   Stockfish 020114 64 SSE4.2    +3  +20/=61/-19 50.50%   50.5/100
2   Houdini 4 Pro x64B            -3  +19/=61/-20 49.50%   49.5/100
SF idle threads sleep.

SF010214-16 v. H4B-16, Blitz 5m  0
                                      
1   Stockfish 020114 64 SSE4.2   +49  +29/=56/-15 57.00%   57.0/100
2   Houdini 4 Pro x64B           -49  +15/=56/-29 43.00%   43.0/100

SF010214-16 v. H4B-1, Blitz 1m+1s  0
                                      
1   Stockfish 020114 64 SSE4.2  +174  +41/=35/-4 73.13%   58.5/80
2   Houdini 4 Pro x64B          -174  +4/=35/-41 26.88%   21.5/80

This match was stopped at 80 due to technical reasons, so the inverse test will also be 80 games. SF1 v H4B-16 is next.

These are a prelude to Vincent L's request for a Round Robin, 16 v 8, 5+3 test.