Re: [amibroker] Is there a faster way of writing this AFL?

["Steve Dugas" <sjdugas@xxxxxxxxxxx>]

Hi - Don't know if this will help you much unless you are plotting the same 
foreign tickers many times, but for those who optimize here is a good tip -

I have some systems that use a lot of market internals which my code called 
using Foreign().  I could see in the profiler that all the calls to 
Foreign() accounted for a lot of time, so following a thought that someone 
posted here a while back I wrote a seperate little code just to call the 
foreign tickers and plotted it as a chart. Not much to see, it just calls 
the foreign tickers and saves them to memory using StaticVarSet(). I can 
turn it on/off in the params and the title changes to "Success" in green to 
let me know whether the static vars are on or off   8 - )    Then in my 
system code I replaced all the Foreigns with StaticVarGet(), and just like 
that the new code ran 25% faster.

And actually I realized a productivity increase of 50% from it, because the 
code took 2+ days to run and it always finished in the middle of the night 
and the computer would sit there doing nothing for hours while I was 
sleeping - I could only run it every 3 days ( 10 times a month ). Now the 
new code finishes in 2 days and I can crank up another opt right away so I 
can run 15 in a month instead of 10 - a very nice improvement, and thanks 
very much to whoever mentioned it!



----- Original Message ----- 
From: "potatosoupz" <potatosoupz@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, December 02, 2009 11:29 PM
Subject: [amibroker] Is there a faster way of writing this AFL?


> Plot(Foreign("ZZZZ", "Close")/Foreign(XYZ", "Close"), "ZZZZ/ZYX Ratio", 
> colorGreen);
>
> I have a few of these and they seem to be slowing down the whole app. Is 
> that possible?
>
>
>
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