Enable CUDA in colgrep Linux release builds#48
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raphaelsty merged 1 commit intomainfrom Mar 17, 2026
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Add cuda feature to the Linux x86_64 release build alongside mkl. Since cudarc uses dynamic-linking, the binary loads CUDA libs at runtime via dlopen. On machines without CUDA, init fails once (microseconds) and all subsequent calls return cached None — zero overhead. This means a single binary works everywhere: - With NVIDIA GPU + CUDA toolkit: full GPU acceleration - Without GPU: silent CPU fallback, no performance penalty Also installs CUDA toolkit on the Linux CI runner since cudarc's build script needs headers at compile time. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
cudafeature to Linux x86_64 colgrep release builds (alongside existingmkl)curl | shinstall, CUDA just works if GPU is presentHow it works
cudarcusesdynamic-linking— the binary callsdlopen("libcuda.so")at runtime:dlopenfails in microseconds, result cached inOnceLock, all subsequent calls returnNoneinstantly — zero overheadSingle binary, works everywhere
Test plan
cuda,mklfeatures🤖 Generated with Claude Code