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Maniphest T81987

Enabling Motion Blur with Cycles OptiX backend yields OPTIX_ERROR_PIPELINE_OUT_OF_CONSTANT_MEMORY
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Description

System Information
Operating system: Windows 10
Graphics card: Quadro RTX 6000
NVidia Driver Version: 451.82

Blender Version
Broken: 2.92 Alpha - https://github.com/blender/blender/commit/ef5d6e9c457a4265467b6aca588c55ba60689ff0
Worked: 2.91 Beta - a month ago

Short description of error
Selecting the OptiX backend, enabling motion blur on a simple geometry triggers the internal OptiX error OPTIX_ERROR_PIPELINE_OUT_OF_CONSTANT_MEMORY.

Exact steps for others to reproduce the error
I have attached a file that demonstrates the problem. Rendering a single frame yields the following error:

OPTIX_ERROR_PIPELINE_OUT_OF_CONSTANT_MEMORY in optixPipelineCreate(context, &pipeline_options, &link_options, pipeline_groups, (sizeof(pipeline_groups) / sizeof(pipeline_groups[0])), nullptr, 0, &pipelines[PIP_PATH_TRACE]) (device_optix.cpp:593)

Rendering with CUDA / CPU works fine.

optix_mb_bug.2.blend7 MBDownload

Event Timeline

Olivier Maury (omaury) created this task.Oct 23 2020, 1:18 AM
Olivier Maury (omaury) added a project: Render & Cycles.
Olivier Maury (omaury) added subscribers: Patrick Mours (pmoursnv), Brecht Van Lommel (brecht).
Olivier Maury (omaury) updated the task description. (Show Details)Oct 23 2020, 1:22 AM
Patrick Mours (pmoursnv) added a comment.Oct 26 2020, 1:37 PM

I'm not able reproduce that on r455 drivers (456.71) with a RTX 2080Ti and a RTX 8000 (which would be equivalent to your 6000). Render completes with OptiX (black head, since there is no light in the scene). Could you try updating the driver on your system? And also recheck with the 2.91 build that worked before. The error points toward a system problem, since I don't believe the launch parameters have changed since 2.91 (and the size of those is the only thing that should be able to cause that error).

Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Needs Information from User.Oct 27 2020, 7:35 PM
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).

To download the latest daily build see: https://builder.blender.org/download/
For more information on installing the latest graphics driver see https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

Olivier Maury (omaury) added a comment.Oct 28 2020, 11:39 PM

False alert, sorry for the trouble: One of the extensions we have in our fork uses tables in constant memory which caused the problem.

Olivier Maury (omaury) closed this task as Resolved.Oct 28 2020, 11:40 PM
Olivier Maury (omaury) claimed this task.