Render stopping

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Hi, I’m running into repeated crashes with Karma in Houdini 20.5.332.
My scene is very simple: just a car simulated in RBD and a smoke sim behind it with a bit under 100M voxels.
I’m on an i9-13900K, RTX 4080 (16GB VRAM), 64GB RAM, Windows 11.
The issue is that after less than ten frames Karma consistently crashes with a segmentation fault. The crash logs don’t always point to the same place: sometimes it’s during volume evaluation (BRAY_VolumeSpan), sometimes in shader evaluation (MaterialX/VEX), and sometimes during EXR image output (IMG_FileEXR, OpenEXROutputFile).
It doesn’t seem tied to a single asset since the crash happens in different parts of the render pipeline depending on the run. I can provide the crash reports if needed.
Does this sound like something suspicious on my setup, or is it just bad luck hitting known Karma instabilities?

EDIT: I added a 4th crash dump that happened after my post. é
Edited by tq_stn - Aug. 22, 2025 06:22:20

Attachments:
crash_001.pdf (436.6 KB)
crash_002.pdf (279.9 KB)
crash_003.pdf (298.7 KB)
crash_004.pdf (270.2 KB)

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The log seems to show Arnold's HTOA plugin crashing. Uninstall that software and try rending with Karma again.
Using Houdini Indie 20.5
Windows 11 64GB Ryzen 16 core.
nVidia 3060RTX 12BG RAM.
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