Install IsaacLab 2.3.0 release by following the installation guide. Please make sure to clone the IsaacLab repository and perform the installation using the release/2.3.0 branch.

After installation, your environment should satisfies:

isaacsim <= 5.1.0.0   # tested on 5.1.0.0
isaaclab <= 0.54.3    # tested on 0.54.3, 0.53.1
isaaclab-rl <= 0.4.7  # tested on 0.4.7, 0.4.4

Higher version may cause conflicts with our customized rsl_rl==3.3.0 and robot_lab==2.3.0.

2. Install Customized RSL-RL and RobotLab

We uses a customized version of rsl_rl and robot_lab. Install them in editable mode:

python -m pip install -e source/robot_lab
python -m pip install -e source/rsl_rl

3. Install MuJoCo (Optional, for Sim2Sim)

To enable MuJoCo-based simulation:

pip install mujoco pygame  # tested on 3.4.0 and 3.6.0

Training and Evaluation

Run the following commands:

# Train
python scripts/rsl_rl/train.py --task=RobotLab-Go2-v0 --headless

# Evaluate
python scripts/rsl_rl/play.py --task=RobotLab-Go2-v0

Training with RoboGauge Evaluation

RoboGauge provides an asynchronous suite for evaluating motion-control reinforcement learning policies, helping you select the best model. After installing RoboGauge by following the installation guide, start the RoboGauge server:

python robogauge/scripts/server.py --port 9973 --num-processes 32

In another terminal, start your training with RoboGauge evaluation enabled:

# Train
python scripts/rsl_rl/train.py --task=RobotLab-Go2-v0 --headless --robogauge --robogauge_port 9973

Note on Asynchronous Evaluation:

Since the evaluation runs asynchronously, the training loop receives the results from the previous evaluation in the next iteration. If evaluation is slower than training, tasks will be queued. Upon training completion, the process will wait for all remaining evaluation tasks to finish before exiting.

Performance Example: On a system with an AMD EPYC 7763 and RTX 4090, a full evaluation takes approximately 5 minutes with num_processes=63. Training and saving checkpoints every 500 steps typically takes around 30 minutes.

Configuration

The training pipeline can be configured at two levels: task-level Python configuration files and runtime arguments passed to the training script.

Task-Level Configuration

The default task settings are defined in the following files:

Environment configuration

source/robot_lab/robot_lab/tasks/go2/env_cfg.py

RL algorithm configuration

source/robot_lab/robot_lab/tasks/go2/rsl_rl_cfg.py

Task registration

source/robot_lab/robot_lab/tasks/go2/__init__.py

Runtime Overrides

In addition to the default configuration files, train.py and play.py supports several command-line arguments for runtime overrides:

python scripts/rsl_rl/train.py \
   --task=RobotLab-Go2-v0 \
   --headless \
   --experiment_name <YOUR_EXP_NAME> \
   --run_name <YOUR_RUN_NAME> \
   --num_envs <NUM_ENVS> \
   --checkpoint <PATH_TO_CHECKPOINT>

For more details, refer to the robot_lab repo.

MuJoCo Sim2Sim

Set the policy_path in deploy/deploy_mujoco/configs/go2.yaml:

policy_path: "{ROOT_DIR}/deploy/pre_train/go2/xxx.pt" # policy.pt exported by running scripts/rsl_rl/play.py

Run the deployment script:

python deploy/deploy_mujoco/deploy_go2.py

Controller Behavior

Automatic detection: If a controller is connected, control mode is enabled automatically.
Fallback mode: If no controller is detected, default commands from the config file are used.

Controller Mapping

Input	Function
`LX / LY`	Forward / lateral velocity
`RX`	Angular velocity (steering)

Switching Simulation Scenarios

Modify xml_path in deploy/deploy_mujoco/config/go2.yaml:

# Flat terrain
xml_path: "{ROOT_DIR}/resources/go2/flat.xml"

# Stairs
xml_path: "{ROOT_DIR}/resources/go2/stairs.xml"

# Boxes
xml_path: "{ROOT_DIR}/resources/go2/boxes.xml"

# Custom
xml_path: "{ROOT_DIR}/resources/go2/your-custom-scene.xml"

Differences from `go2_rl_gym`

Different tracking reward formulation (fixed sigma vs. dynamic sigma)
Different reward weights (e.g., lower dof_acc_l2 weight in Lab due to physics-step level implementation and sensitivity to outliers)
Lack domain_rand: randomize_motor_strength

TODO

Try replacing ActionManager-level delay with DelayedPDActuatorCfg or UnitreeActuatorCfg_Go2HV, and make sure the randomization of motor parameters works correctly.

Acknowledgements

This repository would not exist without the following open-source projects:

isaac_lab: Unified framework for robot learning built on NVIDIA Isaac Sim.
rsl_rl: Reinforcement learning algorithms.
robot_lab: RL Extension Library for Robots, Based on IsaacLab.
mujoco: High-performance CPU physics simulator.

Related publications implemented in this repo:

CTS: Concurrent Teacher-Student Reinforcement Learning for Legged Locomotion

README.md

go2_rl_robotlab

Overview

Installation Guide

1. Install IsaacLab