Device or Resource Busy Error at the beginning of Render

[hurrycat]

Hi,

Lately I have been getting this error, either when starting a production render or IR. It happens about once every 2 days, randomly. Pressing Render again starts rendering with no problems.
I am reporting this because sometimes I let it render several images overnight, and this would stop everything.

The error appears after the Parsing scene... phase, and before displacement and GI calculation. I am running corona 7 hotfix 1 and 3ds Max 2021.
I saw on the forums that this is a recurring bug, but I didn't find a solution. Unfortunately I can't provide the scene, but I am willing to provide as much information as possible, if the dev team wants any additional help.

To start, the scene has lots of Forest objects, displacement and a ton of Corona proxies. Poly count is ~50 million and file size about 4gb. Rendering uses about 50 to 70% of 128gb Ram (4 sticks) and is done on a AMD 3970X.

Let me know if you have any hunch regarding this bug, or If you need any additional info.

Have a nice day!

[rowmanns]

Hi,

Are you able to test this in the latest v8 daily build and see if the issue is already fixed there?

You can find it here: https://forum.corona-renderer.com/index.php?topic=33839.0

Thanks,

Rowan

[Avi]

Hi, could you please provide more information about what the error message says?

Also, I would like to suggest that you try using the Corona Renderer 10 daily build version, as it contains several bug fixes related to using Forest Pack in the scene. It is possible that the issue you are facing has been resolved in this version.
https://forum.corona-renderer.com/index.php?topic=38385.0

If you are willing to try the daily build version, we would appreciate it if you could provide us with feedback on whether the issue persists or not.

Note: The daily builds are the newest, experimental versions of Corona Renderer intended mainly for testing purposes and to showcase the recently added features. They contain the latest bug fixes but are not guaranteed to be stable, and in some cases can even damage scene files.

Check this link to know more about it: https://support.chaos.com/hc/en-us/articles/4528206493329-Corona-for-3ds-Max-Daily-Builds-

[hurrycat]

Hello,

I am now on Corona 9 and haven't encountered the error since.

Thank you for the follow-up.

[Avi]

I am glad, the issue is now resolved.