(open) [HOU-2736] overlapping volume extremly slow rendering

[len_xie]

2 pyro sim, try to render them together, it's fine to render them seperately, but vray get stuck when rendering them together.

[tsvetomira.girginova]

Dear len_xie, hello.

Thank you for the provided file. Please next time use V-Ray > Pack Scene to deliver all or more of the needed information.
For now I am not able to reproduce the described from you with our latest nightly builds.

In order to be more helpful, please define the following:

1. Is the render process extremely slow or it gets stuck?
2. Confirm that you are using CPU Mode and share your hardware specs (CPU type and RAM available) to perform a similar test
3. Please attach yinYang.obj here or through our contact form

Waiting for your answer.

Best regards,
TS

[len_xie]

thank you for replying, I added the obj as attachment, about the questions:
1.the process is extremely slow almost stucking, with low resulution it can render very slowly, while if renderer seperatly, very fast.
2.yes, I'm using cpu mode, Intel i7-6800K CPU @ 3.40GHz 3.40 GHz,64 GB
3.modified attachment at the top.

[tsvetomira.girginova]

Thank you, len_xie!

I will take a look and contact you back as soon as possible.

[tsvetomira.girginova]

Hello, len_xie.

We have detected rendering issues in the provided scene, yes.
It is escalated to our dev team.

I will keep you posted about the progress.

Enjoy the weekend!

[tsvetomira.girginova]

len_xie, hello again!

Please download the suitable for your Houdini version latest nightly build (20211005) and give us feedback.
It is working well in our environment - just tested.

Looks like the yin yang mystery is revealed, but please confirm.
Wishing you a happy day.