Rybka 4.1

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NATIONAL12
Posts: 305
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Location: bristol,uk

Rybka 4.1

Post by NATIONAL12 » Mon Apr 11, 2011 9:50 pm

the latest testing on CEGT shows quite an increase for Rybka 4.1.



http://www.husvankempen.de/nunn/40_40%2 ... liste.html

rbarreira
Posts: 900
Joined: Tue Apr 27, 2010 1:48 pm

Re: Rybka 4.1

Post by rbarreira » Mon Apr 11, 2011 9:58 pm

Showing 9 elo right now. Is that a ~ 1 elo per month improvement rate or do I have the wrong release dates?

mhalstern
Posts: 484
Joined: Wed Nov 18, 2009 12:09 am

Re: Rybka 4.1

Post by mhalstern » Mon Apr 11, 2011 10:02 pm

I think the elo gain is statistical randomness, as Vas stated that he did not change anything related to eval or search. This was a bug fix release, mostly related to stall bugs.

LucenaTheLucid
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Re: Rybka 4.1

Post by LucenaTheLucid » Mon Apr 11, 2011 11:59 pm

There 9 ELO improvement you are referring to is from the 6CPU version of Rybka 4 and the 4 CPU version of Rybka 4.1

Dann Corbit
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Re: Rybka 4.1

Post by Dann Corbit » Tue Apr 12, 2011 12:02 am

Code: Select all

3 Deep Rybka 4.1 x64 4CPU 3253 22 22 612 71.5% 3094 41.0% 
6 Deep Rybka 4 x64 4CPU 3218 9 9 4170 73.9% 3037 36.5%    
Looks like 53-18=35 Elo to me.

h1a8
Posts: 399
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Re: Rybka 4.1

Post by h1a8 » Tue Apr 12, 2011 4:01 am

Why doesn't CCRL test Houdini with 4 cores? Why just test it with 1 core?

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M ANSARI
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Re: Rybka 4.1

Post by M ANSARI » Tue Apr 12, 2011 5:16 am

Rybka 4.1 is only a bug fix with no ELO strength increase by way of evaluation improvement. Of course the stall bug was very serious and should improve ELO strength, especially in games where depth 13 or more are reached frequently.

Jouni
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Re: Rybka 4.1

Post by Jouni » Tue Apr 12, 2011 7:02 am

Let's see what happens in TCEC Elite match: Rybka 4 scored 16,5-23,6 = -60 ELO. Interesting match coming with super hardware!

Jouni

jpqy
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Location: Belgium

Re: Rybka 4.1

Post by jpqy » Tue Apr 12, 2011 7:08 am

Yes..i would like to see Rybka RC2 playing with his full strength against Houdini!

JP.

Norm Pollock
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Re: Rybka 4.1

Post by Norm Pollock » Tue Apr 12, 2011 1:30 pm

Can someone clear the confusion for me about "Rybka" and "Deep Rybka"? How are they the same or different?

Is "Deep Rybka 1CPU" the same as "Rybka"?

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