[Computer-go] What's a good playout speed?

Urban Hafner contact at urbanhafner.com
Sat Mar 28 03:45:48 PDT 2015

Good to know Petr! Where does the strength "come from"? Sophisticated playouts or a search algorithm or both?

Von meinem iPhone gesendet

> Am 28.03.2015 um 11:38 schrieb Petr Baudis <pasky at ucw.cz>:
>  hi!
> On Sat, Mar 28, 2015 at 11:30:37AM +0100, folkert wrote:
>>>> Because I read here that people can do 25k playouts per second while my
>>>> program can only do ~ 20 per second when doing full validity checks on
>>>> all steps.
>>> Do you have a reference, some context for the 25K playouts?
>> Look for the topic "What's a good playout speed?" in the mailinglist
>> archives.
>> http://computer-go.org/pipermail/computer-go/
>> On Wed, Jan 14, 2015 at 09:14:24AM +0100, Urban Hafner wrote:
>> ..snip..
>> Right now I'm at ~2000pps on
>> 9x9 and ~1000pps on 19x19. This is for playouts with simple ko and suicide
>> checks and no concurrency. Now I wonder if this is fast enough to even
>> start thinking about implementing a UCT/MCTS player
>  Michi does 30 playouts/s (sic! single thread) on 9x9 on my oldish i3
> notebook, and can be much stronger than GNUGo on that board size.
>  I think people worry about playout speed too much. ;-)
>                Petr Baudis
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