DGX Spark Setup

Complete setup guide for running Nemotron Super 120B (NVFP4) on a DGX Spark as a private OpenClaw backend with multi-user LiteLLM routing.

Architecture

MacBook (remote) ──Tailscale──► Mac Mini (OpenClaw host, SatPicks worker)
                                      │ LAN SSH
                                      ▼
                               DGX Spark (192.168.1.234)
                               ├── vLLM :8000  (inference)
                               └── LiteLLM :4000 (auth/routing)

Prerequisites