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Treliff,
Had a thought this AM--the jump may be due to hitting a cache limit.
I'm sure TJ had the solution, but it may have come up back when Fred's
PTrader was pushing the limit so may be hard to find.
I'd email TJ.
Bob
-----Original Message-----
From: treliff [mailto:treliff@xxxxxxxxx]
Sent: Monday, April 26, 2004 9:27 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: Q. re. AddToComposite execution time
I did Bob, should've mentioned that. All ATC's are each specific
ticker related and pretty much similar, but I did try combining
different ones to make sure there's not one "spoiler".
-treliff
--- In amibroker@xxxxxxxxxxxxxxx, "Bob Jagow" <bjagow@xxxx> wrote:
> "These jumps in execution time"?
> Did you, for example, try replacing the offending 17th statement
with the
> 18th?
>
> -----Original Message-----
> From: treliff [mailto:treliff@x...]
> Sent: Monday, April 26, 2004 8:47 PM
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Q. re. AddToComposite execution time
>
>
> I am running a pretty intense AddToComposite scan on a collection
of
> stock options. Within this scan there are (so far, I'm only just
> beginning) 30 separate ATC statements that will create hundreds of
> artificial tickers. I interrupted the scan with some 97 minutes to
> go...
>
> I then split the formula into two scans of 15 ATC's each (but
> running over the same collection of issues) and it turned out each
> separate scan takes about one minute. I drilled down a bit further
> and discovered that 16 statements also take about one minute but as
> soon as I add the 17th execution time jumps to 44 minutes (I
> actually let this scan run for about ten minutes to make sure the
> estimated remaining time was indeed correct) .
>
> Of course 17 is no magic number here, all will depend on the #
> issues scanned, the complexity of the formulas and PC power. The
> heart of the matter is:
>
> - is there an explanation for these "jumps" in execution
> time, and
> - is there a setting I can change in my PC so it will be able to
> handle a larger scan?
>
> Thanks for your advice.
>
> -treliff
>
>
>
>
>
>
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