BUG: Random slowdown on scene parsing

[chopmeister]

So with the 19.1. daily I'm experiencing weird and completely random slowdowns when rendering a complex scene. Sometimes the render starts instantly, other times "Parsing the scene..." takes a minute or more, and sometimes "Building acc. structure..." takes a minute or two.

All of this happens without changes in the scene, ie. I press render and cancel a few times in a row, and each time the scene preparation behaves differently.

I'm using Max 2015.

[Ondra]

Is it possible you ran out of RAM? If not, can you send me the scene (https://corona-renderer.com/upload/)?

[chopmeister]

I run a dual Xeon with 48 GB of RAM, so I don't think it's that. It's not all that big of a scene.

It also happens when I isolate a single object in that scene and try to render. I'll send you the scene after I finish work today. :)

[chopmeister]

Scratch the "complex scenes" part. I just uploaded a small scene with three crappy trees with the link you gave me (1422293881_preparationslow.zip) . Same thing happens approx. 1 out of 10 times. Also the mat editor is insanely slow on in all my scenes, this one included.

Running Max 2015 on dual Xeons on a Supermicro MBO with 48 GB ram, SSDs, the works. As for plugins, besides Corona, we also have Vray 3 (SP1), ForestPack, RailClone.

[chopmeister]

I have an update:


I uninstalled and reinstalled service pack 3 for 3dsmax 2015, and it seems both problems are gone. Seems it was Max's fault somehow. I did have SP3 installed before  (no clue if the installation could have gone wrong somehow) but Max works in mysterious ways... :-/

Hope you haven't spent too much time on it, or any for that matter.

[Ondra]

ok, works fine here too. Let me know if anything changes.

[cgiout]

Are there any compatibility issues between SP3 and Corona 1.00.01? After installing SP3 alla material slots went black!

[Ondra]

I dont know about anything. It is possible max deleted something and your license got removed - check if it is ok

[cgiout]

Already tried to remove Corona and install it again. Didn't change anything. Before SP3 all was working.

EDIT: after rebooting the workstation it worked...mmm very weird.