CEGT/CCRL 1cpu/4cpu spreads

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BB+
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Joined: Thu Jun 10, 2010 4:26 am

CEGT/CCRL 1cpu/4cpu spreads

Post by BB+ » Wed Feb 20, 2013 10:37 pm

I found a smattering of top engines (64-bit versions) in 40/4 lists of both CEGT and CCRL, and looked at the difference between the 1cpu and 4cpu versions. My conditions were approximately: needed to be in both lists with same version, and at least 2900 CEGT for 4cpu, and 2800 CEGT for 1cpu. I also didn't include every versions of some multi-appearing programs, and curtailed some data when the error bars were large.
.                    CEGT gam# +-  CCRL gam# +-  diff
Houdini 3.0 4CPU     3188 3100 13  3320 1644 17   132
Houdini 2.0c 4CPU    3142 2800 13  3270 2465 13   128
Houdini 1.5 4CPU     3124 4698  9  3260 1582 16   136
Critter 1.2 4CPU     3060 2900 10  3204 1331 17   144
Rybka 4.0 4CPU       3057 4600  8  3191 2389 13   134
Stockfish 2.0.1 4CPU 3033 3000 10  3162 1647 14   129
Houdini 2.0c 1CPU    3033 2700 11  3198 1580 15   165
Rybka 3.0 4CPU       3022 6000  7  3163 5128 10   141
Houdini 1.5 1CPU     3018 5450  8  3166 3039 11   148
Komodo 5.0 1CPU      3001 3300  9  3143 2086 11   142
Critter 1.4 1CPU     2978 2400 11  3139 1663 15   161
Hiarcs 14 4CPU       2975 2000 12  3098 1449 15   123
Rybka 4.0 1CPU       2966 7242  6  3099 2253 13   133
Stockfish 2.2.2 1CPU 2963 2400 18  3112 1647 14   149
Naum 4.2 4CPU        2961 4500  8  3094 4492  9   133
Rybka 3.0 x64 1CPU   2915 5540  8  3077 5998  9   162
Rybka 2.3.2a 4CPU    2907 4150  8  3036 3615 10   129
Shredder 12 4CPU     2900 4600  8  3037 7029  8   137 [avg OA on/off]
Naum 4.2 1CPU        2824 9040  6  2978 3496 10   154
Hiarcs 14 1CPU       2823 2800 10  2986  927 19   163
Fritz 13 1CPU        2811 2857  9  2980 2633 11   169
Shredder 12 1CPU     2800  10K  5  2954 3161 11   154 (OA On)
The average 4cpu difference is 133, while at 1cpu it is 155. This seems beyond a mere statistical blip.

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