def experiment(variant):
env = NormalizedBoxEnv(variant['env_class']())
obs_dim = env.observation_space.low.size
action_dim = env.action_space.low.size
variant['algo_kwargs'] = dict(
num_epochs=variant['num_epochs'],
num_steps_per_epoch=variant['num_steps_per_epoch'],
num_steps_per_eval=variant['num_steps_per_eval'],
max_path_length=variant['max_path_length'],
min_num_steps_before_training=variant['min_num_steps_before_training'],
batch_size=variant['batch_size'],
discount=variant['discount'],
replay_buffer_size=variant['replay_buffer_size'],
soft_target_tau=variant['soft_target_tau'],
target_update_period=variant['target_update_period'],
train_policy_with_reparameterization=variant['train_policy_with_reparameterization'],
policy_lr=variant['policy_lr'],
qf_lr=variant['qf_lr'],
vf_lr=variant['vf_lr'],
reward_scale=variant['reward_scale'],
)
M = variant['layer_size']
qf = FlattenMlp(
input_size=obs_dim + action_dim,
output_size=1,
hidden_sizes=[M, M],
# **variant['qf_kwargs']
)
vf = FlattenMlp(
input_size=obs_dim,
output_size=1,
hidden_sizes=[M, M],
# **variant['vf_kwargs']
)
policy = TanhGaussianPolicy(
obs_dim=obs_dim,
action_dim=action_dim,
hidden_sizes=[M, M],
# **variant['policy_kwargs']
)
algorithm = SoftActorCritic(
env,
policy=policy,
qf=qf,
vf=vf,
**variant['algo_kwargs']
)
if ptu.gpu_enabled():
qf.to(ptu.device)
vf.to(ptu.device)
policy.to(ptu.device)
algorithm.to(ptu.device)
algorithm.train()
def her_twin_sac_experiment(variant):
env = variant['env_class'](**variant['env_kwargs'])
observation_key = variant.get('observation_key', 'observation')
desired_goal_key = variant.get('desired_goal_key', 'desired_goal')
replay_buffer = ObsDictRelabelingBuffer(
env=env,
observation_key=observation_key,
desired_goal_key=desired_goal_key,
**variant['replay_buffer_kwargs']
)
obs_dim = env.observation_space.spaces['observation'].low.size
action_dim = env.action_space.low.size
goal_dim = env.observation_space.spaces['desired_goal'].low.size
if variant['normalize']:
env = NormalizedBoxEnv(env)
qf1 = FlattenMlp(
input_size=obs_dim + action_dim + goal_dim,
output_size=1,
**variant['qf_kwargs']
)
qf2 = FlattenMlp(
input_size=obs_dim + action_dim + goal_dim,
output_size=1,
**variant['qf_kwargs']
)
vf = FlattenMlp(
input_size=obs_dim + goal_dim,
output_size=1,
**variant['vf_kwargs']
)
policy = TanhGaussianPolicy(
obs_dim=obs_dim + goal_dim,
action_dim=action_dim,
**variant['policy_kwargs']
)
algorithm = HerTwinSac(
env,
qf1=qf1,
qf2=qf2,
vf=vf,
policy=policy,
replay_buffer=replay_buffer,
observation_key=observation_key,
desired_goal_key=desired_goal_key,
**variant['algo_kwargs']
)
if ptu.gpu_enabled():
qf1.to(ptu.device)
qf2.to(ptu.device)
vf.to(ptu.device)
policy.to(ptu.device)
algorithm.to(ptu.device)
algorithm.train()
def grill_her_sac_experiment(variant):
env = variant["env_class"](**variant['env_kwargs'])
render = variant["render"]
rdim = variant["rdim"]
vae_path = variant["vae_paths"][str(rdim)]
reward_params = variant.get("reward_params", dict())
init_camera = variant.get("init_camera", None)
if init_camera is None:
camera_name = "topview"
else:
camera_name = None
env = ImageEnv(
env,
84,
init_camera=init_camera,
camera_name=camera_name,
transpose=True,
normalize=True,
)
env = VAEWrappedEnv(
env,
vae_path,
decode_goals=render,
render_goals=render,
render_rollouts=render,
reward_params=reward_params,
**variant.get('vae_wrapped_env_kwargs', {})
)
if variant['normalize']:
env = NormalizedBoxEnv(env)
observation_key = variant.get('observation_key', 'latent_observation')
desired_goal_key = variant.get('desired_goal_key', 'latent_desired_goal')
achieved_goal_key = desired_goal_key.replace("desired", "achieved")
obs_dim = (
env.observation_space.spaces[observation_key].low.size
+ env.observation_space.spaces[desired_goal_key].low.size
)
action_dim = env.action_space.low.size
hidden_sizes = variant.get('hidden_sizes', [400, 300])
qf = FlattenMlp(
input_size=obs_dim + action_dim,
output_size=1,
hidden_sizes=hidden_sizes,
)
vf = FlattenMlp(
input_size=obs_dim,
output_size=1,
hidden_sizes=hidden_sizes,
)
policy = TanhGaussianPolicy(
obs_dim=obs_dim,
action_dim=action_dim,
hidden_sizes=hidden_sizes,
)
training_mode = variant.get("training_mode", "train")
testing_mode = variant.get("testing_mode", "test")
testing_env = pickle.loads(pickle.dumps(env))
testing_env.mode(testing_mode)
training_env = pickle.loads(pickle.dumps(env))
training_env.mode(training_mode)
relabeling_env = pickle.loads(pickle.dumps(env))
relabeling_env.mode(training_mode)
relabeling_env.disable_render()
video_vae_env = pickle.loads(pickle.dumps(env))
video_vae_env.mode("video_vae")
video_goal_env = pickle.loads(pickle.dumps(env))
video_goal_env.mode("video_env")
replay_buffer = ObsDictRelabelingBuffer(
env=relabeling_env,
observation_key=observation_key,
desired_goal_key=desired_goal_key,
achieved_goal_key=achieved_goal_key,
**variant['replay_kwargs']
)
variant["algo_kwargs"]["replay_buffer"] = replay_buffer
algorithm = HerSac(
testing_env,
training_env=training_env,
qf=qf,
vf=vf,
policy=policy,
render=render,
render_during_eval=render,
observation_key=observation_key,
desired_goal_key=desired_goal_key,
**variant['algo_kwargs']
)
if ptu.gpu_enabled():
print("using GPU")
qf.to(ptu.device)
vf.to(ptu.device)
policy.to(ptu.device)
algorithm.to(ptu.device)
for e in [testing_env, training_env, video_vae_env, video_goal_env]:
e.vae.to(ptu.device)
algorithm.train()
if variant.get("save_video", True):
logdir = logger.get_snapshot_dir()
policy.train(False)
filename = osp.join(logdir, 'video_final_env.mp4')
rollout_function = rf.create_rollout_function(
rf.multitask_rollout,
max_path_length=algorithm.max_path_length,
observation_key=algorithm.observation_key,
desired_goal_key=algorithm.desired_goal_key,
)
dump_video(video_goal_env, policy, filename, rollout_function)
filename = osp.join(logdir, 'video_final_vae.mp4')
dump_video(video_vae_env, policy, filename, rollout_function)