[computer-go] Library of Effective GO routines v 0.106

[Łukasz Lew]

I do not understand it. Maybe someone does?
I've made some tests on 2 core processors, and I have strange results.
Some of 2 core processors got results exactly 2x times worse than they should.
Why?
I have no idea.
But 2.8 Ghz 2 core works exactly like my 1.4 laptop.


Also version of g++ does matter.
Łukasz

On 2/21/07, Brian Slesinsky <brian at slesinsky.org> wrote:
> The only real change is to link against the Boost libraries I
> installed using DarwinPorts.  Here are the diffs:
>
> -CFLAGS += -Wall #-static #-Wno-long-long -Wextra -Wno-variadic-macros
> +CFLAGS += -Wall -I/opt/local/include -L/opt/local/lib
>
> It's a desktop and I don't see any options for power management.
> Maybe it's just a difference in processors?  It's a two core chip but
> perhaps not as fast at single-threaded apps.  Adding multithreading
> might help.
>
> - Brian
>
> On 2/21/07, Łukasz Lew <lukasz.lew at gmail.com> wrote:
> > On 2/21/07, Brian Slesinsky <brian at slesinsky.org> wrote:
> > > [resending; apologies if you get this twice.]
> > >
> > > Hi,
> >
> > Hi Brian,
> >
> > >
> > > This is my first post to the list, so I'll introduce myself:   I'm a
> > > software developer and just getting started with playing Go.  I read
> > > the article in the Economist and thought that the work on Monte-Carlo
> > > based Go programs sounds promising.  I'm not interested in writing my
> > > own Go program but would like to experiment with improving existing
> > > programs.
> >
> > Have fun ;)
> >
> > >
> > > I built and started libego on an iMac with a 2GHz Intel Core Duo.  The
> > > initial benchmark reports these results:
> > >
> > > Performance:
> > >   100000 playouts
> > >   1.84255 seconds
> > >   54.2727 kpps
> > > Black wins = 43983
> > > White wins = 56017
> > > P(black win) = 0.43983
> > >
> > > Are these numbers to be expected?
> >
> > They are correct, except rather low performance.
> > It should be rather about 80 kpps (kilo playouts per second)
> >
> > There are few possible reasons for this:
> >  - You are using a laptop with power management
> >   - You changed Makefile or some source files to make it compile on Mac?
> >
> > Best Regards,
> > Łukasz Lew
> >
> > >
> > > - Brian
> > > _______________________________________________
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> > >
> >
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