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vLLM Images Cut Startup Time by 14–18% With Precompiled Python Bytecode
- Who
- vLLM
- What
- ships precompiled Python bytecode in its CUDA nightly images and official release images starting with v0.32.0
What happened
Cold start, meet build time. 📷 Shipping precompiled Python bytecode in vLLM’s images cuts startup time by 14–18% (~18s on H100)—one `uv` flag at build time, with zero recompiles at launch. Already in CUDA nightlies; official release images from v0.32.0. Great work, @nilsmatteson. 📷
Links in the post: 1The story so far
vLLM has added precompiled Python bytecode to its CUDA nightly images and says the change cuts startup time by 14–18%, saving about 18 seconds on H100. Official release images will include it starting with v0.32.0. The change uses a single `uv` flag to compile Python bytecode when the images are built. vLLM says this eliminates recompilation at launch.
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