Segmentation fault during scene rendering with both CUDA and OptiX on Tesla V100 GPUs

[zhengzhang01]

Description

Running ./render.sh results in a segmentation fault during object synchronization stage, regardless of using CUDA or OptiX as compute device type.

Environment

• GPU: 8x Tesla V100-SXM2-32GB
• CPU: Intel Xeon Platinum 8163 @ 2.50GHz
• Blender: 3.6
• Python: 3.10

Steps to Reproduce

1. Clone repository
2. Run ./render.sh
3. Crash occurs during object synchronization with error:

Fra:1 Mem:1530.73M (Peak 1695.78M) | Time:00:02.28 | Mem:0.00M, Peak:0.00M | Scene, ViewLayer | Synchronizing object | Cube.001
Fra:1 Mem:1530.74M (Peak 1695.78M) | Time:00:02.28 | Mem:0.00M, Peak:0.00M | Scene, ViewLayer | Synchronizing object | Cube.010
Fra:1 Mem:1530.76M (Peak 1695.78M) | Time:00:02.28 | Mem:0.00M, Peak:0.00M | Scene, ViewLayer | Synchronizing object | object
zsh: segmentation fault (core dumped)

Attempted Fix

Changed device type from OptiX to CUDA in render_scenes_rgbd.py:

bpy.context.preferences.addons["cycles"].preferences.compute_device_type = "CUDA"

But the same segmentation fault persists.

Question

Which files/scripts need to be modified and what changes are needed to successfully run the rendering process without segmentation fault?

[hwjiang1510]

Hi,

Thank you for your interest in our work!
Could you try some other random seeds? I found sometimes it reports the segmentation fault randomly.

Best,
Hanwen

[Daniellli]

Hi, I meet the same problem. And no matter what the seed is, it always comes up with a segmentation fault. Could you further provide more details about your runing environment.