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Up Topic Rybka Support & Discussion / Rybka Discussion / "Max number of processors" settiing: physical or logical ?
- - By Quicksort (**) [fr] Date 2009-08-22 20:28
With "Hyperthreading", Intel' s chips (say Core i7) have two logical processors per physical core, as you know.
Does the "Max number of processors" setting pertain to physical cores or logical processors ?

Thanks,

Alan
Parent - - By Fulcrum2000 (****) [nl] Date 2009-08-22 20:43
logical

Rybka unfortunately makes no difference between a 'real' and a virtual core.
Parent - By Quicksort (**) [fr] Date 2009-08-22 22:42
Thanks again Fulcrum.

Alan
Parent - - By Lukas Cimiotti (Bronze) [de] Date 2009-08-23 13:48
Your Rybka doesn't - my Rybka does :)
Parent - - By chessprofessional (**) [rs] Date 2009-08-23 15:28
You usas fritz? You use deep rybka better
Parent - By Felix Kling (Gold) [de] Date 2009-08-23 16:39
he uses the fritz interface. It's mainly because of playchess I guess.
Parent - - By Fulcrum2000 (****) [nl] Date 2009-08-23 18:51

> Your Rybka doesn't - my Rybka does


Not your Rybka, but your utility program to set the correct affinities ;-)
Parent - - By Lukas Cimiotti (Bronze) [de] Date 2009-08-23 19:05
I hope Rybka 4 will do this without external help ;)
Parent - By Fulcrum2000 (****) [nl] Date 2009-08-23 20:21
Me too, if anyone can push Vas in the right direction, it's you.
Parent - - By Roland Rösler (****) [de] Date 2009-08-23 21:41
With option to use the virtual cores too! :-)
Vas is a chess engine programmer and not a hardware guru. Maybe in future it will be nice to use (some?) virtual cores too! But I admit, it should be standard to use only the "real" cores!
Parent - By keoki010 (Bronze) [us] Date 2009-08-24 16:14
I'd rather have the option.  When you are analyzing you can run 4x4 with 2 engines.
Up Topic Rybka Support & Discussion / Rybka Discussion / "Max number of processors" settiing: physical or logical ?

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