NVIDIA / NVIDIA/optix-toolkit

Issue with building PyOptiX binding on Windows

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Dominant language
C++
Stars
143
Forks
28
Avg merge
4d 17h
Merged PRs (30d)
4

Description

In order to build the optix Python module correctly on Windows, please modify target_link_libraries
Change CUDA::cuda_driver to CUDA::cudart
https://github.com/NVIDIA/optix-toolkit/blob/master/PyOptiX/optix/CMakeLists.txt#L42-L45

Otherwise this error occurs:
main.obj : error LNK2001: unresolved external symbol cudaFree

I used a conda environment to set things up before building.
https://github.com/NVIDIA/optix-toolkit/tree/master/PyOptiX#conda-environment

My environment:
OptiX SDK 7.5.0
CUDA Toolkit 11.8
CMake 3.24.2
Windows 10 Enterprise 21H2 64 bit
Visual Studio 2019

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Open PyOptiX/optix/CMakeLists.txt around lines 42-45 and inspect the target_link_libraries entry associated with the Python module. Build the PyOptiX binding in the documented conda environment on Windows, and confirm the unresolved cudaFree linker error is gone.

Written by the indexing model from the issue text.

Assessment

Tech stack
cmake, cpp, python
Domain
build-system
Issue type
Bug
Difficulty
1/5
Estimated time
Under an hour
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
58/100

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