I checked the log files and see nothing bizarre.   I looked for sudden
score changes or cases where the program is winning and suddenly loses. 

I also looked for early search aborting and saw none of that.   FatMan
will abort the search is the memory pool runs low.  

There is a very good chance this is merely due to low sample size.  Each
player has played less than 50 games and a couple of freak losses in a
small sample can make a large difference in your rating.   You probably
noticed that the graph for Mogo was wildly up and down just a few games ago.

However I'm still going to look at the source code - I haven't studied
FatMan in many months.  

FatMan has early exit, but even that is implemented in a scalable way.  
If the score is extremely negative or extremely positive it will stop
searching and play a move,  but only when it has searched at least 1/10
of the nodes (or time) it had intended to search.    In the log files of
this study that I have access to, this has not yet changed the expected
result of the game.    But it's not a feature that should affect it's
scalability.

- Don



Don Dailey wrote:
>> I wonder if fatman trend near 13 is an artefact or if the curve shows it
>> has reached some limit in scalabitly.
>>   
>>     
> It's rather odd.   I'm checking the log file and then I will check the
> source code to see if I have some artificial limits in there.
>
> - Don
>
>
>   
>> Alain.
>>
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