> Another question ... does more playouts really provide a *consistent*
> improvement on the ELO score, especially for those strongest
> programs?

It does, on the levels we've reached so far. Anyone telling you what the
chart (of improvement to playouts) looks like beyond the current level
of the strongest programs is guessing ;-)

> I remember that some programs running on laptop rank very
> high in the Olympaids, that seems imply that speed simply doesn't
> matter here ...

I think speed matters, but it is still clearly the case that good
algorithms matter much more (*):

http://www.grappa.univ-lille3.fr/icga/tournament.php?id=216
  (19x19 winner has fewer cores than places 2 to 6)

http://www.grappa.univ-lille3.fr/icga/tournament.php?id=215
  (9x9 winner on a notebook; you can make a good argument that opening
book now matters as much as algorithms on 9x9)

(http://www.grappa.univ-lille3.fr/icga/tournament.php?id=226 does not
show hardware for 13x13, but from the other charts: 12 cores > 56 cores
> 150 cores).

http://www.grappa.univ-lille3.fr/icga/tournament.php?id=193
  (19x19: 4 cores > 64 cores > 16 cores > 24 cores > 8 cores)

http://www.grappa.univ-lille3.fr/icga/tournament.php?id=194
  (9x9: 64 cores > 16 cores > 8 cores - yay! found an "expected" result!)

(Of course, statistics are easy lie with; e.g. the Mogo numbers in the
above 2010 tables are unreliable as they had communication problems, but
I think my conclusion, that there is only small correlation with CPU
power, is valid.)

Darren

*: If it didn't, most of us wouldn't be here :-)

-- 
Darren Cook, Software Researcher/Developer

http://dcook.org/work/ (About me and my work)
http://dcook.org/blogs.html (My blogs and articles)
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