|
PureBytes Links
Trading Reference Links
|
Hello,
Fully agree to changing the subject line.
Execution times may not be consistent for one simple reason:
you are using pre-emptive multitasking operating system, therefore
during the execution of current thread the system may switch the tasks
and come back to your task several hundreds of milliseconds later.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "J. Biran" <jbiran@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, July 06, 2008 10:20 AM
Subject: RE: [amibroker] Code Check & profile discrepancies (was Re: AmiBroker 5.14.0 BETA released)
>
> Can I suggest changing the subject line when the subject
> changes? It is really hard to keep track of what the
> messages are about when they ALL have same subject while
> spanning the globe with contents
> I have noticed that the excution times reported by this tool
> are not always consisitent. When repeating the test multiple
> times, once in a while the result changes dramatically. But
> it is still helpful.
>
> Joseph Biran
> ____________________________________________
> -----Original Message-----
> From: amibroker@xxxxxxxxxxxxxxx
> [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Paul Ho
> Sent: Saturday, July 05, 2008 8:32 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Re: AmiBroker 5.14.0 BETA released
>
> Hi
> I have just done some checking on my afls. I have been
> custom cuting
> databases for a few years now to speed up run time. So I
> know
> from experience how much data these afls need before the
> start date.
> In looking at Code Check & profile, One of the AFLs state I
> need 4342
> past bars before the start date, which is approx 20 years of
> daily
> data. I only have approx 18 years. So using QuickAFL wouldnt
> make any
> difference to the execution time. But from experimenting
> with various
> starting date in my custom database, I know that this afl
> only needs
> 400 bars (1 & 1/2 years) of data before the start date.
> Obviously,
> 400 bars back would make a marked difference in speed (thats
> why I
> started this years ago).
> I do not know why there is a difference between what AB
> calculates
> and what it actually uses.
> I also notice that setting the bars required manually to
> something
> less than what Code and Profile says makes no difference to
> either
> the results (which I would expect to ) or runtime. Is that
> correct
> that setbarsrequired cannot be set to less than What AB
> calculates?
>
>
> ------------------------------------
>
> 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
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|