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[amibroker] Re: AB has for Win32 stopped working problem



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Hi Tomasz,

What is the the difference in terms of performance/speed between
-running 64 bit Amibroker on x64 windows and
-running 32 bit Amibroker on x64 windows?

Thanks,
Zozu


--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Hello,
> 
> You guys seem to have some crazy expectations.  Your computer hardware has limits !
> 
> Let me calculate,
> 
> 8 years, 1-minute data ? 480 minutes per trading day, 250 trading days per year = 960K bars per symbol
> One bar 40 bytes. One symbol 38MB.
> 
> 100 Symbols = 3.8GB
> 
> For data alone.
> ===========
> 
> Now imagine that if you are running backtest you must have at least TWICE that memory to
> keep intermediate results.
> 
> You have simplt run out of memory.
> 
> 
> Solutions for your "problem":
> 1. Decrease number of symbols
> 2. Decrease number of bars
> 3. Decrease in-memory cache in Tools->Preferences, "Data" to 11 symbols
> 4. Run 64 bit version of AmiBroker on 64 bit version of Windows and have 10GB RAM installed
> 
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message ----- 
> From: "mkecera" <mkecera@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Friday, July 31, 2009 9:55 AM
> Subject: [amibroker] AB has for Win32 stopped working problem
> 
> 
> >I tried backtesting on one minute data (8 years,100 symbols, 1 minute data). I run a strategy that backtested without any problems 
> >on 5 minute data and every time I try it on 1 minute data I get an error: AB for Win32 has stopped working. This is when AB is 
> >trying to list all the trades in AA. Then I am forced to close AB.
> >
> > Tried to fiddle with the Data settings in preferences to no success.
> > Has anyone encountered this problem before? I would appreciate any help.
> > Thanks.
> >
> > (I have Vista 32)
> >
> > BR,
> >
> > MK
> >
> >
> >
> > ------------------------------------
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> >
> >
>




------------------------------------

**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.

TO GET TECHNICAL SUPPORT send an e-mail directly to 
SUPPORT {at} amibroker.com

TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
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