docs: full CUDA toolkit (NVRTC dev libs) required to build the extension#208
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JinukMoon wants to merge 1 commit into
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docs: full CUDA toolkit (NVRTC dev libs) required to build the extension#208JinukMoon wants to merge 1 commit into
JinukMoon wants to merge 1 commit into
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A compiler-only toolchain (e.g. conda's cuda-nvcc alone) fails the CMake build with 'CUDA::nvrtc but the target was not found' (CMakeLists.txt links CUDA::nvrtc). Document the requirement and the CUDAToolkit_ROOT workaround, as suggested in PASSIONLab#207.
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What
Adds an installation-docs note that building the C++ extension requires a full CUDA toolkit including the NVRTC development libraries, with the exact failure signature and the
CUDAToolkit_ROOTworkaround.Why
Follow-up to #207 (item 2 of my 0.6.8 test report there): on a toolchain that provides only the compiler — e.g. conda's
cuda-nvccpackage alone — the CMake build fails withbecause
openequivariance/CMakeLists.txtlinksCUDA::nvrtc. The failure is easy to hit in conda-managed environments (wherecuda-nvccis the idiomatic way to getnvcc) and the error message doesn't hint at the fix. Verified on torch 2.8.0+cu128 / cp311 / RTX 4060 Ti: settingCUDAToolkit_ROOTto a full toolkit (/usr/local/cuda-12.8) resolves it.As suggested by @asglover in #207 — happy to adjust wording or placement.
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