Stack Level Local/Globals

[Eric Chatonet]

Hi Dennis,

Nice tests :-)
I agree: The conclusions are a bit hard to understand...
I am inclined to think that for intensive calculations (repeat for  
each pixel tPixel ;-) global arrays would be always preferable.
In most cases and *practically*, custom properties "slowness" (as I  
explained it in a previous post) is not a problem.
Depends on the context.
I bet that, in many cases, code optimisation has to be searched for  
elsewhere :-)

Le 4 juil. 05 à 23:42, Dennis Brown a écrit :

> The conclusions are a bit hard to understand for this example, but  
> it appears that custom properties sets used instead of global  
> arrays are about 2.5 times as slow for writing and 3 times as slow  
> for reading, except for the case where a very large data string is  
> stored, then it seems to take much longer for the globals to create  
> a very large data space for each element.  I can only conclude that  
> the method used for creating new data space for globals involves a  
> lot of shuffling of memory structures, while the method used for  
> custom properties is simpler.  However, it is only a guess at this  
> point.
>
> In any case using custom properties for the compute intensive  
> arrays would significantly slow my program.  However, they would be  
> a viable alternative to globals for many cases.


Best Regards from Paris,

Eric Chatonet.
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