=?ISO-8859-1?Q?Matthias_Wei=DFer?= <mat### [at] matweide> wrote:
> Brian Elliott schrieb:
>
> > I'll compare a couple of scenes without photons, just to see for myself if
> > there are any performance differences beyond that.  This is all probably
> > splitting hairs anyway. But I was curious and then surprised because I
> > expected to find negligible change -- but 14% is significant.
>
> I think a lot of improvement come's from the compiler used. If the
> compiler used for 3.5 is another compiler than that used for 3.6 there
> can be a big improvement.

Speaking of which, I tried compiling with GCC 3.4 using the flags
'-mach=ahtlon-xp -mtune=athlon-xp -mfpmath=sse' and saw around 10% speed
improvement.  Without changing one line of code, simd can still benefit a
double-precision app like POV :)

....Chambers

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