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

["Tomasz Janeczko" <groups@xxxxxxxxxxxxx>]

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@xxxxxxxxx>
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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------------------------------------

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