Re: [gnugo-devel] Level of SlugGo

[David G Doshay]

Some of it could be the difference between 3.6 and 3.7.x. We use 3.6 at 
level 10, but I do not know the default playing level of GNU Go on KGS. 
We also originally put SlugGo up on KGS with a bug that had just been 
introduced to the code (part of a quick hack to allow reasonable play 
on small boards), and at first SlugGo's rating dropped below 16 k 
before climbing back after we fixed it. On KGS they are both very close 
to 13k, GNU Go about 1/2 better, SlugGo about 0.2 lower. I think that 
they will get closer as more games build up.

I do think some recent work on GNU Go has made it stronger, but there 
are reasons we do not use the development branch:  we want to explore 
what our changes are doing and we would not be able to separate the 
effects if we were always changing the underlying engine, so I think it 
is better if we wait for release versions of GNU Go and let the 
development team decide when that version is ready.

My claim of being about 2 stones stronger than GNU Go is based upon 
comparing results against the independent reference of Many Faces of 
Go. It could also be some quirk that makes SlugGo stronger than GNU Go 
against Many Faces but not against humans. We will know more as results 
accumulate.

Cheers,
David


On 29, Oct 2005, at 10:09 AM, Terry McIntyre wrote:

> I played Sluggo last night on KGS, and noticed that it uses Gnugo 3.6; 
> but I believe there are Gnugo 3.7.x bots on KGS.
>
> Terry McIntyre -- UNIX for hire
> Software Development, Systems Administration, Computer Security
>
> cell: 213-291-5169 email: address@hidden
> address@hidden -- text messaging
> On Oct 29, 2005, at 10:03 AM, Rémi Coulom wrote:
>
> > David G Doshay wrote:
> >
> > > This is one of the questions explored by SlugGo, a cluster-based 
> > > program being developed at UCSC. Our answer so far is that we can 
> > > get about 2 stones stronger with 16 to 20 CPUs.
> >
> > Hi David,
> >
> > How do you explain that SlugGo has a lower rating than GNU Go on KGS ?
> >
> > Rémi
> >
> >
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>
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