Jeff Lait

It is sad when a play suddenly turns into a tragedy....

But it is important to hear this stuff, so thank you very much for both pushing Copernicus and reporting where things broke down.

If you can, please do submit the offending .hip so we can better understand how things failed. Because while I've seen this, I can only hope that our planned solutions to those pain points will work... I don't want to find out we fixed the wrong problem.

Please include a link to this thread as well.

Thank you for testing! Glad this was the source of the problem. IIRC, the fix to our interop woes was not trivial to backport, which is why we chose just to leave it disabled in the current version.

It was just pointed out to me that we have interop disabled in H21 because of some driver leaks we weren't able to address in time. Living in the future, as I am, I already had the fast interop.

You can try forcing interop to run anyways with:
HOUDINI_COP_RASTERIZE_INTEROP
You have to set this environment variable to 1 and see if it unlocks faster speed. It probably will cause a VRAM leak that will result in unhappiness, however. But it would be good to know if it makes it fast so we know that when this is fixed in future versions you will get a faster rasterize....