Running the Radiance engine on Windows via WSL2: patches and benchmarks
bruns20 · reddit · 2026-11-13
Reddit user bruns20 published an unofficial WSL2 port (radiance-wsl repo) of the Linux-only Radiance engine, built mostly with Claude Code:
- build.sh builds any upstream release from source with small WSL patches.
- make-runtime.sh works around ROCm 10.1 hanging on the first GPU job when an iGPU is present (known bug), using AMD's 10.3 nightlies instead.
- run.sh serves an OpenAI-compatible API on 127.0.0.1:8000.
- Two of four patches come from community work (codeberg #341) enabling operation without /dev/kfd.
Benchmarks (R9700 32GB, Qwen3.8-27B MXFP4 + DFlash2, 131K context): 8s from start to serving (vs 70-75s for vLLM on the same box); prefill 3,223/2,784 tok/s on 9.4K/36K prompts; decode 75-80 tok/s for prose and 145-160 tok/s for code. RX 9070/9070 XT likely work too.
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