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Hello,
Iterating through bars using loop is a lot slower than array operation.
It can be 10x or more depending on number of bars.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "sidhartha70" <sidhartha70@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, August 12, 2008 11:30 PM
Subject: [amibroker] Re: AFL Execution time for indicator code
> Thanks TJ. That's impressive.
>
> What happens where you are not using AFL in array mode and are using
> looping structures through each bar...?
>
> I think you have said before that there is no special execution
> penalty for this...?
>
> Many Thanks
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>>
>> Hello,
>>
>> Here is an article that covers that in detail:
>> http://www.amibroker.com/kb/2008/08/12/afl-execution-speed/
>>
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: "Tomasz Janeczko" <groups@xxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Tuesday, August 12, 2008 6:21 PM
>> Subject: Re: [amibroker] Re: AFL Execution time for indicator code
>>
>>
>> > AFL array processing is at native machine code speed. Can't be
> faster than that.
>> >
>> > Best regards,
>> > Tomasz Janeczko
>> > amibroker.com
>> > ----- Original Message -----
>> > From: "sidhartha70" <sidhartha70@xxx>
>> > To: <amibroker@xxxxxxxxxxxxxxx>
>> > Sent: Tuesday, August 12, 2008 4:59 PM
>> > Subject: [amibroker] Re: AFL Execution time for indicator code
>> >
>> >
>> >> Thanks TJ. I am using 5.16 actually.
>> >>
>> >> As a point of interest, how does AFL execution speed compare with
> C#...?
>> >>
>> >>
>> >> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@> wrote:
>> >>>
>> >>> If you are using linked charts, it is recommeded to upgrade to 5.16
>> >>>
>> >>> Best regards,
>> >>> Tomasz Janeczko
>> >>> amibroker.com
>> >>> ----- Original Message -----
>> >>> From: "sidhartha70" <sidhartha70@>
>> >>> To: <amibroker@xxxxxxxxxxxxxxx>
>> >>> Sent: Tuesday, August 12, 2008 2:24 PM
>> >>> Subject: [amibroker] Re: AFL Execution time for indicator code
>> >>>
>> >>>
>> >>> > TJ... no I don't.
>> >>> >
>> >>> > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
> wrote:
>> >>> >>
>> >>> >> Do you use lots of Foreign()/SetForeign() ?
>> >>> >>
>> >>> >> Best regards,
>> >>> >> Tomasz Janeczko
>> >>> >> amibroker.com
>> >>> >> ----- Original Message -----
>> >>> >> From: "sidhartha70" <sidhartha70@>
>> >>> >> To: <amibroker@xxxxxxxxxxxxxxx>
>> >>> >> Sent: Tuesday, August 12, 2008 1:17 PM
>> >>> >> Subject: [amibroker] AFL Execution time for indicator code
>> >>> >>
>> >>> >>
>> >>> >> > Lets say I'm looking at 200 tick charts ... I use a number
> of quite
>> >>> >> > complex indictaors to guide my trading... what's the highest
>> >>> >> > realistically usable 'total execution time' for any given
> indicator
>> >>> >> > under those cirumstances...? I want to check my coding is ok.
>> >>> >> >
>> >>> >> > Why do I ask...? Because I have 9 charts on my dual screen set
>> >> up...
>> >>> >> > some are just price graphs. Other's price graphs + more
> complex AFL
>> >>> >> > code... a number of my 'panes' indicate that they take 0.02
>> >> secs total
>> >>> >> > execution time... in concert these seem to be taking my
> AmiBroker
>> >>> >> > session towards unusable slowness...
>> >>> >> >
>> >>> >> > As I mentioned yesterday my average total exec time for all
>> >> graphs is
>> >>> >> > 0.65-0.7 secs... as well as this I have a real time quote
>> >> window open.
>> >>> >> >
>> >>> >> > As I sit here now, I have one of my 8 x 3Ghz cores grinding
> away at
>> >>> >> > about 80%...
>> >>> >> >
>> >>> >> > Oh... I use IQ Feed by the way.
>> >>> >> >
>> >>> >> > Many Thanks
>> >>> >> >
>> >>> >> >
>> >>> >> > ------------------------------------
>> >>> >> >
>> >>> >> > Please note that this group is for discussion between users
> only.
>> >>> >> >
>> >>> >> > To get support from AmiBroker please send an e-mail
> directly to
>> >>> >> > SUPPORT {at} amibroker.com
>> >>> >> >
>> >>> >> > For NEW RELEASE ANNOUNCEMENTS and other news always check
> DEVLOG:
>> >>> >> > http://www.amibroker.com/devlog/
>> >>> >> >
>> >>> >> > For other support material please check also:
>> >>> >> > http://www.amibroker.com/support.html
>> >>> >> > Yahoo! Groups Links
>> >>> >> >
>> >>> >> >
>> >>> >> >
>> >>> >>
>> >>> >
>> >>> >
>> >>> >
>> >>> > ------------------------------------
>> >>> >
>> >>> > Please note that this group is for discussion between users only.
>> >>> >
>> >>> > To get support from AmiBroker please send an e-mail directly to
>> >>> > SUPPORT {at} amibroker.com
>> >>> >
>> >>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> >>> > http://www.amibroker.com/devlog/
>> >>> >
>> >>> > For other support material please check also:
>> >>> > http://www.amibroker.com/support.html
>> >>> > Yahoo! Groups Links
>> >>> >
>> >>> >
>> >>> >
>> >>>
>> >>
>> >>
>> >>
>> >> ------------------------------------
>> >>
>> >> Please note that this group is for discussion between users only.
>> >>
>> >> To get support from AmiBroker please send an e-mail directly to
>> >> SUPPORT {at} amibroker.com
>> >>
>> >> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> >> http://www.amibroker.com/devlog/
>> >>
>> >> For other support material please check also:
>> >> http://www.amibroker.com/support.html
>> >> Yahoo! Groups Links
>> >>
>> >>
>> >>
>> >
>> > ------------------------------------
>> >
>> > Please note that this group is for discussion between users only.
>> >
>> > To get support from AmiBroker please send an e-mail directly to
>> > SUPPORT {at} amibroker.com
>> >
>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> > http://www.amibroker.com/devlog/
>> >
>> > For other support material please check also:
>> > http://www.amibroker.com/support.html
>> > Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
> ------------------------------------
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
> Yahoo! Groups Links
>
>
>
------------------------------------
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