OPTIX Structure Acceleration build fails #93820

New Issue

Jonas Apessos · 2021-12-07T15:27:37+01:00

Jonas Apessos commented

2021-12-07 15:27:37 +01:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
CPU: RYZEN 2700x 8-cores 16-threads
RAM: 32GB
Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 4GB NVIDIA Corporation 4.5.0 NVIDIA 497.09

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: (newest version of Blender that worked as expected)

Short description of error
Cycles will throw a exception for OPTIX_ERROR_INVALID_VALUE in opticAccelBuild() function during the building of the optix acceleration structure.

Exact steps for others to reproduce the error

Set blender cycles to render using OPTIX drivers
Change Device render to Graphics
Add Two Subdivision modifiers
Set the first one to 3 and the second to maximum (the problem might depend on the objects original geometry as well)
Render Scene

More Info
In my scene i use subdivision modifier for a sea mesh with the first iteration in render mode to 3 and the second to 6.
Basically two subdivision modifiers.

Should a exception be thrown for VRAM out of memory error? thats why there was a failure to build the acceleration?

There is a high chance that this error is caused by out of memory for the vram.

i suspect that the pointer to the compacted_data.device_pointer is null and there is a synchronization issue with my graphics card, or internally the function calls for a memory size that the system does not have and it is not checked so that it does not throw or catch the exception.

I am just guessing here...

Media
2021-12-07 16-10-01.mp4

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits CPU: RYZEN 2700x 8-cores 16-threads RAM: 32GB Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 4GB NVIDIA Corporation 4.5.0 NVIDIA 497.09 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: (newest version of Blender that worked as expected) **Short description of error** Cycles will throw a exception for OPTIX_ERROR_INVALID_VALUE in opticAccelBuild() function during the building of the optix acceleration structure. **Exact steps for others to reproduce the error** 1) Set blender cycles to render using OPTIX drivers 2) Change Device render to Graphics 3) Add Two Subdivision modifiers 4) Set the first one to 3 and the second to maximum (the problem might depend on the objects original geometry as well) 5) Render Scene **More Info** In my scene i use subdivision modifier for a sea mesh with the first iteration in render mode to 3 and the second to 6. Basically two subdivision modifiers. Should a exception be thrown for VRAM out of memory error? thats why there was a failure to build the acceleration? There is a high chance that this error is caused by out of memory for the vram. i suspect that the pointer to the compacted_data.device_pointer is null and there is a synchronization issue with my graphics card, or internally the function calls for a memory size that the system does not have and it is not checked so that it does not throw or catch the exception. I am just guessing here... **Media** [2021-12-07 16-10-01.mp4](https://archive.blender.org/developer/F12704532/2021-12-07_16-10-01.mp4)

Jonas Apessos commented

2021-12-07 15:27:37 +01:00

Added subscriber: @JonasApessos

Richard Antalik commented

2021-12-07 15:59:47 +01:00

Added subscriber: @iss

Richard Antalik commented

2021-12-07 15:59:47 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2021-12-07 15:59:47 +01:00

Should a exception be thrown for VRAM out of memory error? thats why there was a failure to build the acceleration?

Currently out of memory situations may not be handled gracefully and program can crash or hang or throw unrelated errors. This is currently not considered to be a bug.

Please check if this happens when you reduce memory requirements like subdivision level. If you can look at used memory, check if there is enough free space. Also upload .blend file so we can reproduce the issue

> Should a exception be thrown for VRAM out of memory error? thats why there was a failure to build the acceleration? Currently out of memory situations may not be handled gracefully and program can crash or hang or throw unrelated errors. This is currently not considered to be a bug. Please check if this happens when you reduce memory requirements like subdivision level. If you can look at used memory, check if there is enough free space. Also upload .blend file so we can reproduce the issue

Pratik Borhade commented

2021-12-20 06:41:29 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-12-20 06:41:29 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Pratik Borhade closed this issue

2021-12-20 06:41:29 +01:00

Pratik Borhade commented

2021-12-20 06:41:29 +01:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

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OPTIX Structure Acceleration build fails #93820