> -----Original Message-----
> From: Bob Hughes [mailto:omniverse charter net]
> I hadn't checked any of the sample files before posting until now so I
> gave
> the scenes\advanced\benchmark.pov a try and found the render times to
> be
> like I would expect. Using 1 thread was slower at 26 minutes, while 2
> threads improves that to about 14 minutes; both SSE2's I tested it in,
> while
> non-SSE2 is similar yet slower overall of course.

That's about what I would expect going from 1 thread to 2.  The Trace
portion of POV scales extremely well (almost ideally) with adding cores.

> For at least one of my own files (actually a pov with collection of
> .inc's)
> the render-time differences can be incredible, at the same output
image
> resolution just over 12 minutes using 1 thread in pvengine-sse2.exe,
> and
> about 96 minutes using 2 threads in pvengine32-sse2.exe (pvengine-
> sse2.exe
> beta 30 was 6 minutes faster, or 90 minutes, for whatever reason).

Is there any way you could create a minimal scene that demonstrates this
discrepancy?  I'm rather interested in testing it myself, as I haven't
had any such problems.

If you can't minimize the scene, would you consider posting your file,
or a link to it?  I can't guarantee how useful it would be without
knowing how large it is, of course.

...Ben Chambers
www.pacificwebguy.com

A render isn't slow unless it won't finish until after your next
birthday.

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