Run Qwen3-8B on Ubuntu: 2026 Setup Guide (Ollama, vLLM, llama.cpp)
Quick answer. Run Qwen3-8B on Ubuntu via Ollama for a 5-minute setup, vLLM 0.20+ for production serving, or llama.cpp for GGUF flexibility. Hardware floor: 16 GB RAM and an 8 GB+ VRAM GPU (RTX 3060 or better). 4-bit quants cut VRAM to roughly 5-6 GB while keeping near-FP16