Alain <aze### [at] qwertyorg> wrote:

> > Quite impressive. I just bought an Athlon II x4 (thank you AMD for maintaining
> > backwards compatibility!) and wanted to see how fast thing thing was. One
> > interesting test I did was to render a particular scene using 3.6 with 4
> > instances vs. 3.7. I was expecting the render times to be about the same. Yet,
> > 3.7 took half the time that 4 instances of 3.6 did. What's allowing this speed
> > up?
> >
> >
>
> With 4 instances of 3.6, it takes 4 times as much memory. You may start
> swaping. You need to parse 4 times, and only once with 3.7.
> With 3.7, data collected by a core can be reused by the others, that's
> impossible in 3.6 and multiple instances.

No radiosity in the scene. Also, definitely no swapping since I have 4GB and the
scene only uses 200MB max. I thought it might be memory issues, but I then
compared the test scene on 3.6 running one instance vs. running 4 instances and
they all finished at the same time.

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