Rendering Stuck in Calculating GI or Error: You do not have enough memory to perform this task

[Anonymous]

I'm having issues rendering with CineRender. When hitting render ArchiCAD either gets stuck on Calculating GI or throws an error saying I do not have enough memory to perform the task. It is only in this specific file that the issues are happening. Could it be a problem with the file? If so how can I fix it?

If any other information is required I'll be happy to provide it.

Thanks in advance for any help!

[mikas]

It could be a lot of things, but for one, grass-effect especially is very memory consuming to render. And with high rendering settings even more memory is needed.

[Anonymous]

I am not using any grass and the issue is there even with low render settings. What else could it be?

[mikas]

If it's only this one project file acting, could it be corrupt in some way.
- What about copy-pasting the model to an empty document with default settings, and try to render. This would give us the default AC rendering settings, I think.
- Or maybe importing the model into an empty document as a hotlink module. That would be easier if there are a lot of stories.
- The third problemsolving method would the halving procedure, to find out there the quirk lies. Work with a copy of the model (obviously), remove half of the model, and try to render. If this doesn't help, halve it again, and so on..
- Or it could be a material with some accidental extreme settings you didn't intend to use.

[Anonymous]

So finally whats the point for rendering, processor o RAM. Which is better 7th generation+32GB or 8th Generation+16GB,...

[Anonymous]

Moving the objects in the file to a new file fixed the issue. Wasn't hard as there wasn't much in the file.

Thanks for the help!

[Bricklyne Clarence]

Another thing you could try in the future is changing the Sun angle by a degree or two either way (or alternatively if you're using HDRI changing the rotation angle similarly by a degree or so).

I have run into this problem quite a bit and it's not necessarily memory related.
( I was able to render far more complex scenes in 3DS Max under similar occasions where Cinerender in ArchiCAD would get stuck).

I believe there's a bug in the program whereby if it runs into an error calculating the GI (with a stray ray or reflections off), the renderer gets stuck in some sort of a calculation loop during the GI calculation phase with the screen just white, or getting stuck on a specific bucket.

Changing those variables I posted above (and you might have to do quite a bit of trial and error) a lot of times got it out of the freeze and allowed it to render normally.
It didn't always work, mind you, but most of the time I tried it this fixed the problem.

[Laszlo Nagy]

darwinland wrote:
So finally whats the point for rendering, processor o RAM. Which is better 7th generation+32GB or 8th Generation+16GB,...

I would always go for the configuration with the more RAM. In your example, the first option has double RAM, while the 7th generation i7 is only about 10-15% slower than the 8th generation. CPU speed increases have been very small in recent years.