Engines and core/time evolution

By Orlando de la Vega Date 2012-07-06 13:45

Engines and core/time evolution

Hi all,

I have decided to make an analysis of time/multi-core improvements of some engines, principally Houdini, Critter, Stockfish and Rybka.
To realise that, I took Power-Trophy Tournament of Clemens Keck and re-started it with exactly the same openings but in ultra blitz 40/1' time control and one core use, while Clemens used 10min+10s time control and 8 cores use.
He obtained this ranking :

Place	Engine	Author	Houdini	Stockfish	Rybka	Critter	Points
1	Houdini 2.0c Pro x64 T8	Robert Houdart	**********	1½½001101½	1½½0½10½11	½½½1½0½1½½	17.0/30
2	Stockfish 2.2.2 JA SSE42 T8	T. Romstad, M. Costalba, J. Kiiski	0½½110010½	**********	10½½½½½½1½	½1½½½101½1	16.5/30
3	Deep Rybka 4.1 x64 T8	Vasik Rajlich	0½½1½01½00	01½½½½½½0½	**********	1½½½½½½½½1	14.5/30
4	Critter 1.6a 64-bit T8	Richard Vida	½½½0½1½0½½	½0½½½010½0	0½½½½½½½½0	**********	12.0/30

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Now my ranking gave this :

Place	Engine	Author	Houdini	Critter	Stockfish	Rybka	Points
1	Houdini 2.0c x64	Robert Houdart	**********	½01½1½1½½0	11½1110½½½	111½½½11½1	20.5/30
2	Critter 1.6a 64-bit	Richard Vida	½10½0½0½½1	**********	½11½½1½011	½½1½1½1½10	18.0/30
3	Stockfish 2.2.2 JA 64bit	T. Romstad, M. Costalba, J. Kiiski	00½0001½½½	½00½½0½100	**********	½½111½½0½0	11.5/30
4	Rybka 4.1 x64	Vasik Rajlich	000½½½00½0	½½0½0½0½01	½½000½½1½1	**********	10.0/30

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Can we conclude something about these two tables ? Some will say that 60 games are not enough, but I think that this argument is not enough to explain the collapse of Critter on multi-core and longer time control !

Best regards,
Orlando