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Hello,
64 bit version can use 16 TERA bytes of virtual memory (4000 times more than 32 bit)
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "zozuzoza" <zozuka@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, July 31, 2009 10:31 PM
Subject: [amibroker] Re: AB has for Win32 stopped working problem
> 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
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > **** 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/
>> > (submissions sent via other channels won't be considered)
>> >
>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> > http://www.amibroker.com/devlog/
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> **** 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/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
>
>
>
------------------------------------
**** 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/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
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