Thorsten Froehlich wrote:
> 
> While all you say is correct and remains valid, it has to be admitted that
> benchmark.pov has one little bias as it does give a rather heavy weight to
> the noise function due to the clouds.

Heavy use of the noise function is quite common for a typical POV-Ray 
scene, even without media, due to procedural textures and geometry.  In 
a typical isosurface landscape scene it is even more excessive than in 
benchmark.pov.

> The reason is that such a comparison is not optimal with the default
> benchmark.pov is that automatic bounding is turned on, which makes the major
> task while rendering searching the bounding volumes.  This to a major part
> depends on memory access.  It is really a lot of searching, but not so much
> computing at all...

Surely the use for comparing processors is limited by this but for 
comparing the performance of whole computers concerning POV-Ray use this 
is exactly what's needed - a typical POV-Ray render will spend much time 
with memory access (in addition to bounding slabs just think of large 
meshes, photon maps, radiosity, image maps).

Christoph

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