Deep Junior 11.2 64-bit 1CPU Gauntlets (CCRL 40/40)

[Aser Huerga]

Deep Junior 11.2 64-bit 1CPU Gauntlets

Hardware: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz8x 3074 MHz with 4.096 MB Memory
Operating system: Microsoft Windows XP 64 Bit Professional Service Pack 2 (Build 3790)
All engines 1 CPU
Arena 2.0.1 GUI
128 Hash Tables
3-4-5 EGTBs
Ponder off
Book GrandPQRS PGN up to 8 moves (151.315 starting positions from years 1981-2009, games selected by Norm Pollock), each pair plays the same position with switched colours.
40 moves in 23 minutes repeating (adapted to the CCRL 40/40 standard)

Gauntlet I:

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1   Deep Junior 11.2 64-bit   -2958- 58.5/120
2   Komodo 1.0 64-bit          3030  15.0/24
3   Protector 1.3.4 64-bit     2962  13.0/24
4   Thinker 5.4C Inert 64-bit  2972  12.5/24
5   Grapefruit 1.0 32-bit      2934  12.0/24
6   Critter 0.60 64-bit        2942  9.0/24

(All ELOs referred to the last Chess Computer Rating List when tournament starts, except -XXXX- one, wich is referred to performance).

Statistics:

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Deep Junior 11.2 64-bit       : 120 (+ 36,= 45,- 39), 48.8 %

Komodo 1.0 64-bit             :  24 (+  3,= 12,-  9), 37.5 %
Thinker 5.4C Inert 64-bit     :  24 (+  8,=  7,-  9), 47.9 %
Protector 1.3.4 64-bit        :  24 (+  6,= 10,-  8), 45.8 %
Critter 0.60 64-bit           :  24 (+ 10,= 10,-  4), 62.5 %
Grapefruit 1.0 32-bit         :  24 (+  9,=  6,-  9), 50.0 %

Games: http://kirill-kryukov.com/chess/discuss ... f=7&t=5171

[Aser Huerga]

Gauntlet II:

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1   Deep Junior 11.2 64-bit  -2911- 52.0/120
2   Shredder 12 32-bit OA On  3030  16.5/24
3   Deep Sjeng WC2008 64-bit  2942  14.5/24
4   Zappa Mexico II 64-bit    2965  14.0/24
5   Hiarcs 12.1               2920  12.5/24
6   Spark 0.3 64-bit          2941  10.5/24

(All ELOs referred to the last Chess Computer Rating List when tournament starts, except -XXXX- one, wich is referred to performance).

Statistics:

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Deep Junior 11.2 64-bit       : 120 (+ 29,= 46,- 45), 43.3 %

Shredder 12 32-bit OA On      :  24 (+  4,=  7,- 13), 31.2 %
Zappa Mexico II 64-bit        :  24 (+  6,=  8,- 10), 41.7 %
Deep Sjeng WC2008 64-bit      :  24 (+  4,= 11,-  9), 39.6 %
Spark 0.3 64-bit              :  24 (+  9,=  9,-  6), 56.2 %
Hiarcs 12.1                   :  24 (+  6,= 11,-  7), 47.9 %

Games: http://kirill-kryukov.com/chess/discuss ... 579#p54579

[Aser Huerga]

Junior climbs up to position 14 from position 15 with the 11.2 64-bit version (now 2937 in CCRL 40/40 1CPU), showing an improvement of 5 ELO points regarding the 11.1a 32-bit version, 5 ELO points behind Spark and 3 ELO points ahead Grapefruit.
http://computerchess.org.uk/ccrl/4040.l ... ons_only=1

[ernest]

Hi,
Is there a difference in strength (and knodes/sec) between the 11.2 64-bit version and the 11.2 32-bit version?
Should there be? (like Shredder, I think Junior does not use bitboards)

[Aser Huerga]

Hi,
Is there a difference in strength (and knodes/sec) between the 11.2 64-bit version and the 11.2 32-bit version?
Should there be? (like Shredder, I think Junior does not use bitboards)

It seems there's no difference, or at least is very small, between Junior 32 and 64 bit versions.
You can see even how the 11.1a 32-bit is ahead the 64-bit one:

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Deep Junior 11.1a 32-bit 1CPU	2933	532 Games
Deep Junior 11.1a 64-bit 1CPU	2928	687 Games

Regarding the new 11.2 version:

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Deep Junior 11.2 64-bit 1CPU	2937	240 Games
Deep Junior 11.2 32-bit 1CPU	2917	88 Games

I guess differences are only due to statistical reasons, and both 32 and 64 bits are equal in strengh.

Regards.