@tella said:
I'm a bit dissapointed. 20000 faces is quite a low count (that's around 40000 triangles, or maybe a bit more if there are more complex faces).
I'm guessing you're a landscape designer? 20,000 faces for an architectural model is pretty big- in my example it's a large house, fully furnished and about 10 3D trees in the garden. For landscapes I realise 20k is almost nothing- I use Vue6i a lot and one of my current scenes contains nearly 3 billion polys- several thousand trees. I never ever export landscape scenes from Vue to SU as even the smallest one would be completely unworkable in SU. I think any system would crash every time. If I have to work on a large landscape in SU I would only model the terrain (with as few polys as possible) and some of the trees around the site of the building I'm working on. I tend to use 3D trees for foregrounds and 2D face-me images of the same trees for mid to backgrounds. Beyond that, I export to Vue and add distant trees and forests there.
As Gaius suggests, you could try replacing trees with proxy components- just a single vertical line if you have a lots of them, but to be honest you're unlikely to be able to bring a 7m poly model into SU in the first place. You'd have to delete (or replace) all your trees, then bring it into SU. Putting them all on a hidden layer might help, but just switching it back on could cause your system to crash if there's a huge amount of geometry on it.
As far as I know it's a fundamental limitation of OpenGL, although it might also be how SU uses OpenGL. It is worth bearing in mind that unlike some programs SU is always rendering in real time- it's interface is pretty much WYSIWYG, so it can't handle as much geometry as other wireframe progs.
Bruce- I'm not too sure about that, I just go by Google's own info:
"Note: SketchUp isn't optimized for dual processors. While it will run on a 64-bit Windows XP machine, there won't be a performance increase."
That and the fact that when I switched from a single core 2.3GHz Intel P4 machine to a Centrino Duo 1.83GHz SU slowed down and one of the Google guys explained that was because SU only uses one core. Of course, the other core can handle other processes while I'm busy in SU (rendering in Vue or VRay for example) so overall performance is better.