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Hello,
No this is not fixed and figures I gave are approximate.
AmiBroker simply calls PeekMessage() WINAPI function when
moving from one symbol to another to process outstanding
Windows messages - this forces task switching.
AB can consume from 1% upto 99%.
It is just dynamic, depends on kind and number of other
applications running, how heavy processing other apps do, etc, etc,
and it is entirely controlled by Windows itself.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "jgibb1us" <jgibb1@xxxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Monday, November 24, 2003 8:32 PM
Subject: [amibroker] Re: Dual processor - will it help?
> Hi TJ,
>
> Is that 90/10% just for optimizing or does it apply to, say,
> backtesting?
>
> And is there any way, on a single-CPU system running XP Home, to
> increase that 10%?
>
> thanks
>
> -john--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> <amibroker@xxxx> wrote:
> > Hello,
> >
> > Yes certainly dual machine has much better responsivity,
> > but even single CPU machine is not locked up during optimizing
> > (the AmiBroker tries to consume no more than about 90% of (single)
> CPU time
> > during optimizations, so 10% is left for the other tasks )
> >
> > Hope this helps.
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: "xoted" <xoted@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Sunday, November 23, 2003 3:12 AM
> > Subject: [amibroker] Re: Dual processor - will it help?
> >
> >
> > > May I infer that I will be able to seamlessly surf the web or do
> > > other work with a dual processor that I wouldn't be able to if
> the
> > > single processor was locked up optimizing/backtesting.
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> <amibroker@xxxx>
> > > wrote:
> > > > Short answer is that you will not gain 2x speed with dual
> processor
> > > > unless you run TWO backtests in TWO instances of AmiBroker
> running
> > > > in parallel.
> > > >
> > > > Best regards,
> > > > Tomasz Janeczko
> > > > amibroker.com
> > > > ----- Original Message -----
> > > > From: "giggollo99" <giggollo@xxxx>
> > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > Sent: Saturday, November 22, 2003 8:32 PM
> > > > Subject: [amibroker] Dual processor - will it help?
> > > >
> > > >
> > > > > I am considering buying a dual-processor CPU system to help
> > > reduce
> > > > > the wait time for backtests among other things. On
> > > tomshardware.com
> > > > > (http://www6.tomshardware.com/cpu/200203131/dual-10.html) it
> says:
> > > > >
> > > > > "This comparison between the two workstation platforms from
> AMD
> > > and
> > > > > Intel clearly shows that dual operation does not necessarily
> mean
> > > > > increased speed for all applications. Rather, you need
> software
> > > that
> > > > > has been specially adapted to multiprocessor operation, so
> that
> > > the
> > > > > load is equally distributed between the two CPUs."
> > > > >
> > > > > Can anyone shed some light on whether Amibroker is able to
> take
> > > full
> > > > > advantage of a dual-processor system and perhaps reduce the
> wait
> > > > > time for backtests/explorations considerably (ideally reduce
> it
> > > by
> > > > > 50%) ?
> > > > >
> > > > > Thanks
> > > > > g
> > > > >
> > > > >
> > > > >
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>
>
>
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> (Web page: http://groups.yahoo.com/group/amiquote/messages/)
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>
>
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