I believe what you are seeing in the way of more memory usage with
larger images is the fact that more of the scene gets "seen".
This is why a small render goes so fast by comparison. There isn't as
much visible in the way of modeled objects or textures to put a ray to.
A large image is going to allow the rays to increase exponentially in
order to trace all the visible areas.
At least that's my own awkward explanation.


Josh English wrote:
> 
> I was wondering if a scene took longer to parse if the scene output size
> was larger... I can tell that it is during parsing that the memory usage
> peaks, and during rendering it doesn't use that much memory, but I was
> just wondering.  The scene I'm working on for the IRTC is taking a long
> time to parse and when I assigned 50000 k of RAM to the application it
> filled the bar almost completely (Yes, this is on a Mac) Fortunately I
> can assign up to 110000 of RAM to the application right now, but I know
> the scene will get more complicated with more objects.
> 
> Josh English
> eng### [at] spiritonecom

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