[Computer-go] CrazyStone in the 5-dan footsteps of Zen

[Hideki Kato]

Rémi Coulom: <4F1B78D7-1591-4921-9483-F81825D5AC1F at free.fr>:
>On 2 janv. 2012, at 20:12, David Fotland wrote:
>
>> Very impressive.  Does anyone know the relative hardware?  I think the 5 dan
>> Zen was running on 26 cores.
>
>Thanks for the nice comments. I am running on 24 cores (Dell PowerEdge R905 Rack Server, 4 x 
>Six-Core AMD Opteron(tm) Processor 8439 SE, 2.8GHz). But it is only one machine. So my 24 
>cores are probably much more efficient than the 26 cores of Zen.

The main pc of my cluster is a dual Xeon X5680, 2 x six-core of 4.2 GHz 
(total 50.4 GHz), and Rémi's pc is 67.2 (12 x 2.8) GHz in total.   Also 
the IPC (instructions per clock) of Gulftown Xeon could be slightly 
better than Istanbul Opteron.  So, I believe the difference of the 
hardware is not so much.

Hideki

>> 
>> Remi, can you tell us how much of the benefit was due to CLOP?  It's an
>> excellent tool BTW.  Thank you for sharing it.
>
>The big improvement I got recently came from tuning one parameter that I had forgotten to 
>tune for a few years. I tuned it with CLOP, but I would have probably got the same result if 
>I had tuned it manually (about +100 Elo in self play, both on 9x9 and 19x19). CLOP simply 
>makes tuning a lot more convenient. I really enjoy using it very much. I am glad if people 
>like it too.
>
>I also fixed a silly bug that was worth 30 Elo in self-play.
>
>Improving the KGS rank at 5d is very difficult. The current experimental version of Crazy 
>Stone wins 78% against Crazy Stone 2011. That's less than one stone difference on KGS. But I 
>am sure both Zen and Crazy Stone will reach 6d in 2012.
>
>Rémi
>
>> 
>> -David
>> 
>>> -----Original Message-----
>>> From: computer-go-bounces at dvandva.org [mailto:computer-go-
>>> bounces at dvandva.org] On Behalf Of "Ingo Althöfer"
>>> Sent: Monday, January 02, 2012 11:04 AM
>>> To: computer-go at dvandva.org
>>> Subject: [Computer-go] CrazyStone in the 5-dan footsteps of Zen
>>> 
>>> Hello everybody,
>>> 
>>> let us start the new year also in the mailing list.
>>> It seems that Zen is finding a strong contender for
>>> its position as leading bot on KGS.
>>> Starting on December 29, Crazy Stone (by Remi Coulom)
>>> has started a long playing session in KGS computer room,
>>> and has now established a stable 5-dan rating.
>>> 
>>> See the rating diagram for CrazyStone at
>>> http://www.gokgs.com/graphPage.jsp?user=crazystone
>>> 
>>> and the list of games at
>>> http://www.gokgs.com/gameArchives.jsp?user=crazystone&year=2011&month=12
>>> and
>>> http://www.gokgs.com/gameArchives.jsp?user=crazystone&year=2012&month=1
>>> 
>>> Ingo
>>> (wishes to see bots with 6-dan ranks on KGS
>>> before the European Go Congress in July 2012)
>>> --
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>> 
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-- 
Hideki Kato <mailto:hideki_katoh at ybb.ne.jp>