MUSUBI-7B

Motion Understanding System for Universal Robot Instruction

Discovers. Understands. Executes. Entirely on-device.

MUSUBI is an on-device SLM fine-tuned for ROS2 Humble. It translates natural language commands (Korean / English / Japanese) into executable ROS2 task plans โ€” entirely on-device with no cloud required.

โš ๏ธ Requirements

  • ROS2 Humble Hawksbill only
  • llama.cpp (llama-server)
  • Ubuntu 22.04

โš ๏ธ Current Limitations (v1)

  • Navigation uses semantic locations only (pre-defined map)
  • Dynamic object detection (YOLO + depth camera) is planned for v2
  • All testing done on UTM Ubuntu 22.04 simulation
  • Real robot / Jetson hardware testing is planned but not yet conducted

Model Details

Item Value
Base model Qwen2.5-7B-Instruct
Fine-tuning QLoRA (MLX, Apple M5 32GB)
Format GGUF Q4_K_M
Size 4.4GB
Val loss 0.324
Inference ~28 tok/s (Metal) / ~12 tok/s (Jetson, planned)
Languages Korean, English, Japanese
ROS2 Humble only
Training samples 135 (synthetic, Qwen2.5-7B local)

Quick Start

# Start llama-server
./llama-server \
  -m musubi-7b-q4km.gguf \
  --host 0.0.0.0 \
  --port 8080 \
  --n-gpu-layers 99 \
  --ctx-size 512

# Send query via ROS2
ros2 topic pub --once /musubi/query std_msgs/msg/String \
  "data: 'Go to the kitchen'"

Supported Tasks

  • task_planning/navigation โ†’ NavigateToPose (Nav2)
  • task_planning/pick_and_place โ†’ navigate steps (v1)
  • param_tuning โ†’ ros2 param set
  • diagnostic โ†’ symptom / cause / solution
  • error โ†’ reason log

ROS2 Integration

See: github.com/mannsub/musubi

Training Pipeline

  1. Topology scan โ†’ robot.yaml
  2. Synthetic data generation (Qwen2.5-7B local, 135 samples)
  3. MLX QLoRA fine-tuning (Apple M5 32GB)
  4. GGUF conversion (llama.cpp Q4_K_M)
  5. llama-server + ROS2 nodes

Roadmap

  • v1: Topology scanner
  • v1: Synthetic data + fine-tuning
  • v1: GGUF + llama-server
  • v1: ROS2 NLP + Executor nodes
  • v2: YOLO + depth camera
  • v2: Real robot hardware testing
  • v2: Jetson Orin NX deployment
  • v3: Multi-robot support

License

Apache-2.0

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