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IsaacGymEnvs-AnymalTerrain-PPO

Trained agent for NVIDIA Isaac Gym Preview environments.

  • Task: AnymalTerrain
  • Agent: PPO

Usage (with skrl)

Note: Visit the skrl Examples section to access the scripts.

  • PyTorch

    from skrl.utils.huggingface import download_model_from_huggingface
    
    # assuming that there is an agent named `agent`
    path = download_model_from_huggingface("skrl/IsaacGymEnvs-AnymalTerrain-PPO", filename="agent.pt")
    agent.load(path)
    
  • JAX

    from skrl.utils.huggingface import download_model_from_huggingface
    
    # assuming that there is an agent named `agent`
    path = download_model_from_huggingface("skrl/IsaacGymEnvs-AnymalTerrain-PPO", filename="agent.pickle")
    agent.load(path)
    

Hyperparameters

Note: Undefined parameters keep their values by default.

# https://skrl.readthedocs.io/en/latest/api/agents/ppo.html#configuration-and-hyperparameters
cfg = PPO_DEFAULT_CONFIG.copy()
cfg["rollouts"] = 24  # memory_size
cfg["learning_epochs"] = 5
cfg["mini_batches"] = 6  # 24 * 4096 / 16384
cfg["discount_factor"] = 0.99
cfg["lambda"] = 0.95
cfg["learning_rate"] = 3e-4
cfg["learning_rate_scheduler"] = KLAdaptiveRL
cfg["learning_rate_scheduler_kwargs"] = {"kl_threshold": 0.008}
cfg["random_timesteps"] = 0
cfg["learning_starts"] = 0
cfg["grad_norm_clip"] = 1.0
cfg["ratio_clip"] = 0.2
cfg["value_clip"] = 0.2
cfg["clip_predicted_values"] = True
cfg["entropy_loss_scale"] = 0.001
cfg["value_loss_scale"] = 1.0
cfg["kl_threshold"] = 0
cfg["rewards_shaper"] = None
cfg["state_preprocessor"] = RunningStandardScaler
cfg["state_preprocessor_kwargs"] = {"size": env.observation_space, "device": device}
cfg["value_preprocessor"] = RunningStandardScaler
cfg["value_preprocessor_kwargs"] = {"size": 1, "device": device}
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Evaluation results

  • Total reward (mean) on IsaacGymEnvs-AnymalTerrain
    self-reported
    19.88 +/- 0.5