"arnold" product type with husk overwrites the same output path when rendering mutliple frames in same process

[paulgolter]

Bug Description

When rendering a usd file with husk (multiple frames in the same process) that contains a renderproduct with the type "arnold", only one output file is generated, that is getting overwritten after each frame is done rendering.

Expected output:
render.1001.exr
render.1002.exr
render.1003.exr
render.1004.exr
render.1005.exr

Actual output:
render.1001.exr (overwritten 5 times)

To Reproduce

Steps to reproduce the behavior:
In Houdini:

1. Add render product with "arnold" type
2. Export usd file and render with husk cli command:
   "C:\Program Files\Side Effects Software\Houdini 20.5.550\bin\husk" --usd-input "usd.usd" -f 1001 -n 5 -i 1 -R HdArnoldRendererPlugin
   OR
3. use usd_render rop with option: "Render all frames with a single process" turned on

Screenshots

Arnold product type:

Confirming productName is time varying:

Used Software Versions

• Arnold: 7.4.1.0
• HtoA: 6.4.1.0
• Houdini 20.5.550

Additional context
example_hip_and_usd_file.zip

[paulgolter]

Current workaround ist to add this husk cli flag:

--restart-delegate 1

Causes the render delegate to restart after each frame, which is not optimal for render times.

[autodesk-oss-arnold-bot]

Issue synced internally to ARNOLD-16565

[sebastienblor]

Hi @paulgolter if I'm not wrong this should be fixed in the latest versions, could you give it a try with 6.4.2.3 ?

[paulgolter]

Hey @sebastienblor thanks for your response.

I just installed houdini 20.5.613 & htoa-6.4.2.3_rb5f02f5.

Unfortunately the bug still exists.

[h-schoenberger]

Hi @sebastienblor

Please see ARNOLD-15140 or #1919
This should have been fixed for Arnold 7.3.3.
It was the same bug, but for all render, no matter if "Arnold Product Type" was set or not.

[sebastienblor]

No, I did confuse this current issue with another issue in my previous question, but it was different. This fix was for rendering with "kick" , independantly of the product type. The one we're talking about here is about rendering with husk using the arnold product type, and has always existed.
I'm working on a fix right now.

[sebastienblor]

indeed @h-schoenberger #1919 is an older issue , it seems to have fixed the default animation renders with husk, but not the use case with the "arnold" product type that the current issue is about. The issue I'm seeing for this current ticket doesn't seem to be new, I don't see how it could have worked in previous versions