Pure‑C CPU Inference Engine for Qwen 3 4B Runs Without Dependencies
A tiny C program lets you run Qwen 3 4B (and smaller) on a plain CPU—no GPU, no Python, no libraries. It loads FP16 weights, does FP32 accumulation, includes its own tokenizer and generation loop, and compiles in a single command. With ~6 GB RAM it’s usable for short chats on Linux or macOS.