def test_td3(args=get_args()):
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
# train_envs = gym.make(args.task)
train_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.layer_num, args.state_shape, device=args.device)
actor = Actor(
net, args.action_shape,
args.max_action, args.device
).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num, args.state_shape,
args.action_shape, concat=True, device=args.device)
critic1 = Critic(net, args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net, args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3Policy(
actor, actor_optim, critic1, critic1_optim, critic2, critic2_optim,
args.tau, args.gamma,
GaussianNoise(sigma=args.exploration_noise), args.policy_noise,
args.update_actor_freq, args.noise_clip,
[env.action_space.low[0], env.action_space.high[0]],
reward_normalization=True, ignore_done=True)
# collector
train_collector = Collector(
policy, train_envs, ReplayBuffer(args.buffer_size))
test_collector = Collector(policy, test_envs)
# train_collector.collect(n_step=args.buffer_size)
# log
writer = SummaryWriter(args.logdir + '/' + 'td3')
def stop_fn(x):
return x >= env.spec.reward_threshold
# trainer
result = offpolicy_trainer(
policy, train_collector, test_collector, args.epoch,
args.step_per_epoch, args.collect_per_step, args.test_num,
args.batch_size, stop_fn=stop_fn, writer=writer)
assert stop_fn(result['best_reward'])
if __name__ == '__main__':
pprint.pprint(result)
# Let's watch its performance!
env = gym.make(args.task)
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
print(f'Final reward: {result["rew"]}, length: {result["len"]}')
def testing_ddpg(args=get_args()):
env = EnvThreeUsers(args.step_per_epoch)
args.state_shape = env.observation_space.shape
args.action_shape = env.action_space.shape
args.max_action = env.action_space.high[0]
# model
net = Net(args.layer_num,
args.state_shape,
0,
device=args.device,
hidden_layer_size=args.unit_num)
actor = Actor(net,
args.action_shape,
args.max_action,
args.device,
hidden_layer_size=args.unit_num).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num,
args.state_shape,
args.action_shape,
concat=True,
device=args.device,
hidden_layer_size=args.unit_num)
critic = Critic(net, args.device, args.unit_num).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
policy = DDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
args.tau,
args.gamma,
OUNoise(sigma=args.exploration_noise),
# GaussianNoise(sigma=args.exploration_noise),
[env.action_space.low[0], env.action_space.high[0]],
reward_normalization=True,
ignore_done=True)
# restore model
log_path = os.path.join(args.logdir, args.task, 'ddpg')
policy.load_state_dict(torch.load(os.path.join(log_path, 'policy.pth')))
print('\nrelode model!')
env = EnvThreeUsers(args.step_per_epoch)
collector = Collector(policy, env)
ep = 10000
result = collector.collect(n_episode=ep, render=args.render)
print('''\nty1_succ_1: {:.6f}, q_len_1: {:.6f},
\nty1_succ_2: {:.2f}, q_len_2: {:.2f},
\nty1_succ_3: {:.2f}, q_len_3: {:.2f},
\nee_1: {:.2f}, ee_2: {:.2f}, ee_3: {:.2f},
\navg_rate:{:.2f}, \navg_power:{:.2f}\n'''.format(
result["ty1s_1"][0] / ep, result["ql_1"][0] / ep,
result["ty1s_2"][0] / ep, result["ql_2"][0] / ep,
result["ty1s_3"][0] / ep, result["ql_3"][0] / ep,
result["ee_1"][0] / ep, result["ee_2"][0] / ep, result["ee_3"][0] / ep,
result["avg_r"] / ep, result["avg_p"] / ep))
print('large than Qmax: users1: {}, users2: {}, users3: {}.'.format(
str(env.large_than_Q_1), str(env.large_than_Q_2),
str(env.large_than_Q_3)))
collector.close()
def test_td3_bc():
args = get_args()
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0] # float
print("device:", args.device)
print("Observations shape:", args.state_shape)
print("Actions shape:", args.action_shape)
print("Action range:", np.min(env.action_space.low),
np.max(env.action_space.high))
args.state_dim = args.state_shape[0]
args.action_dim = args.action_shape[0]
print("Max_action", args.max_action)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
if args.norm_obs:
test_envs = VectorEnvNormObs(test_envs, update_obs_rms=False)
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
test_envs.seed(args.seed)
# model
# actor network
net_a = Net(
args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device,
)
actor = Actor(
net_a,
action_shape=args.action_shape,
max_action=args.max_action,
device=args.device,
).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
# critic network
net_c1 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device,
)
net_c2 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device,
)
critic1 = Critic(net_c1, device=args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net_c2, device=args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3BCPolicy(
actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
policy_noise=args.policy_noise,
update_actor_freq=args.update_actor_freq,
noise_clip=args.noise_clip,
alpha=args.alpha,
estimation_step=args.n_step,
action_space=env.action_space,
)
# load a previous policy
if args.resume_path:
policy.load_state_dict(
torch.load(args.resume_path, map_location=args.device))
print("Loaded agent from: ", args.resume_path)
# collector
test_collector = Collector(policy, test_envs)
# log
now = datetime.datetime.now().strftime("%y%m%d-%H%M%S")
args.algo_name = "td3_bc"
log_name = os.path.join(args.task, args.algo_name, str(args.seed), now)
log_path = os.path.join(args.logdir, log_name)
# logger
if args.logger == "wandb":
logger = WandbLogger(
save_interval=1,
name=log_name.replace(os.path.sep, "__"),
run_id=args.resume_id,
config=args,
project=args.wandb_project,
)
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
if args.logger == "tensorboard":
logger = TensorboardLogger(writer)
else: # wandb
logger.load(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, "policy.pth"))
def watch():
if args.resume_path is None:
args.resume_path = os.path.join(log_path, "policy.pth")
policy.load_state_dict(
torch.load(args.resume_path, map_location=torch.device("cpu")))
policy.eval()
collector = Collector(policy, env)
collector.collect(n_episode=1, render=1 / 35)
if not args.watch:
replay_buffer = load_buffer_d4rl(args.expert_data_task)
if args.norm_obs:
replay_buffer, obs_rms = normalize_all_obs_in_replay_buffer(
replay_buffer)
test_envs.set_obs_rms(obs_rms)
# trainer
result = offline_trainer(
policy,
replay_buffer,
test_collector,
args.epoch,
args.step_per_epoch,
args.test_num,
args.batch_size,
save_best_fn=save_best_fn,
logger=logger,
)
pprint.pprint(result)
else:
watch()
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=args.test_num,
render=args.render)
print(
f"Final reward: {result['rews'].mean()}, length: {result['lens'].mean()}"
)
# train_envs = gym.make(args.task)
train_envs = VectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = VectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.layer_num, args.state_shape, device=args.device)
actor = Actor(net, args.action_shape, args.max_action,
args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num,
args.state_shape,
args.action_shape,
concat=True,
device=args.device)
critic1 = Critic(net, args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net, args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3Policy(actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
def test_ddpg(args=get_args()):
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
args.exploration_noise = args.exploration_noise * args.max_action
print("Observations shape:", args.state_shape)
print("Actions shape:", args.action_shape)
print("Action range:", np.min(env.action_space.low),
np.max(env.action_space.high))
# train_envs = gym.make(args.task)
if args.training_num > 1:
train_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
else:
train_envs = gym.make(args.task)
# test_envs = gym.make(args.task)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net_a = Net(args.state_shape, hidden_sizes=args.hidden_sizes, device=args.device)
actor = Actor(
net_a, args.action_shape, max_action=args.max_action,
device=args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net_c = Net(args.state_shape, args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True, device=args.device)
critic = Critic(net_c, device=args.device).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
policy = DDPGPolicy(
actor, actor_optim, critic, critic_optim,
action_range=[env.action_space.low[0], env.action_space.high[0]],
tau=args.tau, gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
estimation_step=args.n_step)
# load a previous policy
if args.resume_path:
policy.load_state_dict(torch.load(
args.resume_path, map_location=args.device
))
print("Loaded agent from: ", args.resume_path)
# collector
if args.training_num > 1:
buffer = VectorReplayBuffer(args.buffer_size, len(train_envs))
else:
buffer = ReplayBuffer(args.buffer_size)
train_collector = Collector(policy, train_envs, buffer, exploration_noise=True)
test_collector = Collector(policy, test_envs)
train_collector.collect(n_step=args.start_timesteps, random=True)
# log
log_path = os.path.join(args.logdir, args.task, 'ddpg', 'seed_' + str(
args.seed) + '_' + datetime.datetime.now().strftime('%m%d-%H%M%S'))
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
logger = BasicLogger(writer)
def save_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
# trainer
result = offpolicy_trainer(
policy, train_collector, test_collector, args.epoch,
args.step_per_epoch, args.step_per_collect, args.test_num,
args.batch_size, save_fn=save_fn, logger=logger,
update_per_step=args.update_per_step, test_in_train=False)
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=args.test_num, render=args.render)
print(f'Final reward: {result["rews"].mean()}, length: {result["lens"].mean()}')
def test_ddpg(args=get_args()):
env, train_envs, test_envs = make_mujoco_env(args.task,
args.seed,
args.training_num,
args.test_num,
obs_norm=False)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
args.exploration_noise = args.exploration_noise * args.max_action
print("Observations shape:", args.state_shape)
print("Actions shape:", args.action_shape)
print("Action range:", np.min(env.action_space.low),
np.max(env.action_space.high))
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
# model
net_a = Net(args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device)
actor = Actor(net_a,
args.action_shape,
max_action=args.max_action,
device=args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net_c = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device,
)
critic = Critic(net_c, device=args.device).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
policy = DDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
estimation_step=args.n_step,
action_space=env.action_space,
)
# load a previous policy
if args.resume_path:
policy.load_state_dict(
torch.load(args.resume_path, map_location=args.device))
print("Loaded agent from: ", args.resume_path)
# collector
if args.training_num > 1:
buffer = VectorReplayBuffer(args.buffer_size, len(train_envs))
else:
buffer = ReplayBuffer(args.buffer_size)
train_collector = Collector(policy,
train_envs,
buffer,
exploration_noise=True)
test_collector = Collector(policy, test_envs)
train_collector.collect(n_step=args.start_timesteps, random=True)
# log
now = datetime.datetime.now().strftime("%y%m%d-%H%M%S")
args.algo_name = "ddpg"
log_name = os.path.join(args.task, args.algo_name, str(args.seed), now)
log_path = os.path.join(args.logdir, log_name)
# logger
if args.logger == "wandb":
logger = WandbLogger(
save_interval=1,
name=log_name.replace(os.path.sep, "__"),
run_id=args.resume_id,
config=args,
project=args.wandb_project,
)
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
if args.logger == "tensorboard":
logger = TensorboardLogger(writer)
else: # wandb
logger.load(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, "policy.pth"))
if not args.watch:
# trainer
result = offpolicy_trainer(
policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.step_per_collect,
args.test_num,
args.batch_size,
save_best_fn=save_best_fn,
logger=logger,
update_per_step=args.update_per_step,
test_in_train=False,
)
pprint.pprint(result)
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=args.test_num,
render=args.render)
print(
f'Final reward: {result["rews"].mean()}, length: {result["lens"].mean()}'
)
def test_ddpg(args=get_args()):
torch.set_num_threads(1) # we just need only one thread for NN
env = gym.make(args.task)
if args.task == 'Pendulum-v0':
env.spec.reward_threshold = -250
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
# you can also use tianshou.env.SubprocVectorEnv
# train_envs = gym.make(args.task)
train_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device)
actor = Actor(net,
args.action_shape,
max_action=args.max_action,
device=args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device)
critic = Critic(net, device=args.device).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
policy = DDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
reward_normalization=args.rew_norm,
estimation_step=args.n_step,
action_space=env.action_space)
# collector
train_collector = Collector(policy,
train_envs,
VectorReplayBuffer(args.buffer_size,
len(train_envs)),
exploration_noise=True)
test_collector = Collector(policy, test_envs)
# log
log_path = os.path.join(args.logdir, args.task, 'ddpg')
writer = SummaryWriter(log_path)
logger = BasicLogger(writer)
def save_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(mean_rewards):
return mean_rewards >= env.spec.reward_threshold
# trainer
result = offpolicy_trainer(policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.step_per_collect,
args.test_num,
args.batch_size,
update_per_step=args.update_per_step,
stop_fn=stop_fn,
save_fn=save_fn,
logger=logger)
assert stop_fn(result['best_reward'])
if __name__ == '__main__':
pprint.pprint(result)
# Let's watch its performance!
env = gym.make(args.task)
policy.eval()
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
rews, lens = result["rews"], result["lens"]
print(f"Final reward: {rews.mean()}, length: {lens.mean()}")
def training_ddpg(args=get_args()):
env = EnvTwoUsers(args.step_per_epoch)
args.state_shape = env.observation_space.shape
args.action_shape = env.action_space.shape
args.max_action = env.action_space.high[0]
train_envs = VectorEnv([
lambda: EnvTwoUsers(args.step_per_epoch)
for _ in range(args.training_num)
])
test_envs = VectorEnv([
lambda: EnvTwoUsers(args.step_per_epoch) for _ in range(args.test_num)
])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.layer_num,
args.state_shape,
device=args.device,
hidden_layer_size=args.unit_num)
actor = Actor(net,
args.action_shape,
args.max_action,
args.device,
hidden_layer_size=args.unit_num).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num,
args.state_shape,
args.action_shape,
concat=True,
device=args.device,
hidden_layer_size=args.unit_num)
critic = Critic(net, args.device,
hidden_layer_size=args.unit_num).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
# orthogonal initialization
for m in list(actor.modules()) + list(critic.modules()):
if isinstance(m, torch.nn.Linear):
torch.nn.init.orthogonal_(m.weight)
torch.nn.init.zeros_(m.bias)
policy = DDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
args.tau,
args.gamma,
OUNoise(sigma=args.exploration_noise),
# GaussianNoise(sigma=args.exploration_noise),
[env.action_space.low[0], env.action_space.high[0]],
reward_normalization=True,
ignore_done=True)
# collector
train_collector = Collector(policy, train_envs,
ReplayBuffer(args.buffer_size))
test_collector = Collector(policy, test_envs)
# log
log_path = os.path.join(args.logdir, args.task, 'ddpg')
if not os.path.exists(log_path):
os.makedirs(log_path)
# writer = SummaryWriter(log_path)
writer = None
# policy.load_state_dict(torch.load(os.path.join(log_path, 'policy.pth')))
# print('reload model!')
def save_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(x):
return x >= 1e16
# trainer
result = offpolicy_trainer(policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.collect_per_step,
args.test_num,
args.batch_size,
stop_fn=stop_fn,
save_fn=save_fn,
writer=writer)
train_collector.close()
test_collector.close()
def test_il():
args = get_args()
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0] # float
print("device:", args.device)
print("Observations shape:", args.state_shape)
print("Actions shape:", args.action_shape)
print("Action range:", np.min(env.action_space.low), np.max(env.action_space.high))
args.state_dim = args.state_shape[0]
args.action_dim = args.action_shape[0]
print("Max_action", args.max_action)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)]
)
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
device=args.device,
)
actor = Actor(
net,
action_shape=args.action_shape,
max_action=args.max_action,
device=args.device
).to(args.device)
optim = torch.optim.Adam(actor.parameters(), lr=args.lr)
policy = ImitationPolicy(
actor,
optim,
action_space=env.action_space,
action_scaling=True,
action_bound_method="clip"
)
# load a previous policy
if args.resume_path:
policy.load_state_dict(torch.load(args.resume_path, map_location=args.device))
print("Loaded agent from: ", args.resume_path)
# collector
test_collector = Collector(policy, test_envs)
# log
now = datetime.datetime.now().strftime("%y%m%d-%H%M%S")
args.algo_name = "cql"
log_name = os.path.join(args.task, args.algo_name, str(args.seed), now)
log_path = os.path.join(args.logdir, log_name)
# logger
if args.logger == "wandb":
logger = WandbLogger(
save_interval=1,
name=log_name.replace(os.path.sep, "__"),
run_id=args.resume_id,
config=args,
project=args.wandb_project,
)
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
if args.logger == "tensorboard":
logger = TensorboardLogger(writer)
else: # wandb
logger.load(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, "policy.pth"))
def watch():
if args.resume_path is None:
args.resume_path = os.path.join(log_path, "policy.pth")
policy.load_state_dict(
torch.load(args.resume_path, map_location=torch.device("cpu"))
)
policy.eval()
collector = Collector(policy, env)
collector.collect(n_episode=1, render=1 / 35)
if not args.watch:
dataset = d4rl.qlearning_dataset(gym.make(args.expert_data_task))
dataset_size = dataset["rewards"].size
print("dataset_size", dataset_size)
replay_buffer = ReplayBuffer(dataset_size)
for i in range(dataset_size):
replay_buffer.add(
Batch(
obs=dataset["observations"][i],
act=dataset["actions"][i],
rew=dataset["rewards"][i],
done=dataset["terminals"][i],
obs_next=dataset["next_observations"][i],
)
)
print("dataset loaded")
# trainer
result = offline_trainer(
policy,
replay_buffer,
test_collector,
args.epoch,
args.step_per_epoch,
args.test_num,
args.batch_size,
save_best_fn=save_best_fn,
logger=logger,
)
pprint.pprint(result)
else:
watch()
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=args.test_num, render=args.render)
print(f"Final reward: {result['rews'].mean()}, length: {result['lens'].mean()}")
def test_sddpg(args=get_args()):
t = time.time()
torch.set_num_threads(1) # we just need only one thread for NN
env = gym.make(args.task)
if args.task == 'Pendulum-v0':
env.spec.reward_threshold = -250
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
# you can also use tianshou.env.SubprocVectorEnv
# train_envs = gym.make(args.task)
train_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.layer_num, args.state_shape, device=args.device)
actor = Actor(net, args.action_shape, args.max_action,
args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num,
args.state_shape,
args.action_shape,
concat=True,
device=args.device)
critic = Critic(net, args.device).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
if args.model == 'ODEGBM':
model = ODEGBM(args).to(args.device)
elif args.model == 'PriorGBM':
model = PriorGBM(args).to(args.device)
elif args.model == 'NODAE':
model = NODAE(args).to(args.device)
else:
assert args.model == 'ODENet'
model = ODENet(args).to(args.device)
policy = SDDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
model,
args,
action_range=[env.action_space.low[0], env.action_space.high[0]],
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
reward_normalization=args.rew_norm,
ignore_done=args.ignore_done,
estimation_step=args.n_step)
# collector
train_collector = Collector(policy, train_envs,
ReplayBuffer(args.buffer_size))
test_collector = Collector(
policy, test_envs, action_noise=GaussianNoise(sigma=args.test_noise))
# log
log_path = os.path.join(args.logdir, args.task, 'sddpg')
writer = SummaryWriter(log_path)
def train_fn(x, global_step):
loss_history = np.array(policy.loss_history)
if len(loss_history) <= args.max_update_step:
return None
x = np.arange(len(loss_history))
fig, ax = plt.subplots(figsize=(50, 40))
ax.plot(x[:args.max_update_step],
loss_history[:args.max_update_step, 0],
label="Transition loss")
ax.plot(x[:args.max_update_step],
loss_history[:args.max_update_step, 1],
label="Reward loss")
ax.plot(x, loss_history[:, 2], label="Actor loss")
ax.plot(x, loss_history[:, 3], label="Critic loss")
ax.plot(x[args.max_update_step:],
loss_history[args.max_update_step:, 4],
label="Actor loss (simulation)")
ax.plot(x[args.max_update_step:],
loss_history[args.max_update_step:, 5],
label="Critic loss (simulation)")
ax.set_xlabel('Step')
ax.set_ylabel('Loss')
ax.legend(loc='best')
plt.savefig(log_path + str(args.max_update_step) + "_" +
str(args.trans_relative_noise) + str(args.seed) + "_" +
str(time.time() - t) + ".pdf")
plt.close()
return None
def save_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(x):
return x >= env.spec.reward_threshold
# trainer
result = offpolicy_trainer(policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.collect_per_step,
args.test_num,
args.batch_size,
train_fn=train_fn,
stop_fn=stop_fn,
save_fn=save_fn,
writer=writer,
verbose=False,
update_per_step=1)
assert stop_fn(result['best_reward'])
if __name__ == '__main__':
pprint.pprint(result)
# Let's watch its performance!
env = gym.make(args.task)
policy.eval()
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
print(f'Final reward: {result["rew"]}, length: {result["len"]}')
def test_td3_bc(args=get_args()):
if os.path.exists(args.load_buffer_name) and os.path.isfile(args.load_buffer_name):
if args.load_buffer_name.endswith(".hdf5"):
buffer = VectorReplayBuffer.load_hdf5(args.load_buffer_name)
else:
buffer = pickle.load(open(args.load_buffer_name, "rb"))
else:
buffer = gather_data()
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0] # float
if args.reward_threshold is None:
# too low?
default_reward_threshold = {"Pendulum-v0": -1200, "Pendulum-v1": -1200}
args.reward_threshold = default_reward_threshold.get(
args.task, env.spec.reward_threshold
)
args.state_dim = args.state_shape[0]
args.action_dim = args.action_shape[0]
# test_envs = gym.make(args.task)
test_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)]
)
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
test_envs.seed(args.seed)
# model
# actor network
net_a = Net(
args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device,
)
actor = Actor(
net_a,
action_shape=args.action_shape,
max_action=args.max_action,
device=args.device,
).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
# critic network
net_c1 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device,
)
net_c2 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device,
)
critic1 = Critic(net_c1, device=args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net_c2, device=args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3BCPolicy(
actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
policy_noise=args.policy_noise,
update_actor_freq=args.update_actor_freq,
noise_clip=args.noise_clip,
alpha=args.alpha,
estimation_step=args.n_step,
action_space=env.action_space,
)
# load a previous policy
if args.resume_path:
policy.load_state_dict(torch.load(args.resume_path, map_location=args.device))
print("Loaded agent from: ", args.resume_path)
# collector
# buffer has been gathered
# train_collector = Collector(policy, train_envs, buffer, exploration_noise=True)
test_collector = Collector(policy, test_envs)
# log
t0 = datetime.datetime.now().strftime("%m%d_%H%M%S")
log_file = f'seed_{args.seed}_{t0}-{args.task.replace("-", "_")}_td3_bc'
log_path = os.path.join(args.logdir, args.task, 'td3_bc', log_file)
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
logger = TensorboardLogger(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(mean_rewards):
return mean_rewards >= args.reward_threshold
def watch():
policy.load_state_dict(
torch.load(
os.path.join(log_path, 'policy.pth'), map_location=torch.device('cpu')
)
)
policy.eval()
collector = Collector(policy, env)
collector.collect(n_episode=1, render=1 / 35)
# trainer
trainer = OfflineTrainer(
policy,
buffer,
test_collector,
args.epoch,
args.step_per_epoch,
args.test_num,
args.batch_size,
save_best_fn=save_best_fn,
stop_fn=stop_fn,
logger=logger,
)
for epoch, epoch_stat, info in trainer:
print(f"Epoch: {epoch}")
print(epoch_stat)
print(info)
assert stop_fn(info["best_reward"])
# Let's watch its performance!
if __name__ == "__main__":
pprint.pprint(info)
env = gym.make(args.task)
policy.eval()
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
rews, lens = result["rews"], result["lens"]
print(f"Final reward: {rews.mean()}, length: {lens.mean()}")
def main(id, avg, default):
config = init_actor(id)
env_config = config['env_config']
if env_config['world_name'] != "sequential_applr_testbed.world":
env_config['world_name'] = 'Benchmarking/%s/world_%d.world' % (
SET, benchmarking_test[id])
assert os.path.exists(
'/jackal_ws/src/jackal_helper/worlds/Benchmarking/%s/world_%d.world'
% (SET, benchmarking_test[id]))
wrapper_config = config['wrapper_config']
training_config = config['training_config']
wrapper_dict = jackal_navi_envs.jackal_env_wrapper.wrapper_dict
if config['env'] == 'jackal':
env = wrapper_dict[wrapper_config['wrapper']](gym.make(
'jackal_continuous-v0',
**env_config), **wrapper_config['wrapper_args'])
else:
env = gym.make('CartPole-v1')
state_shape = env.observation_space.shape or env.observation_space.n
action_shape = env.action_space.shape or env.action_space.n
# Load the model
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
net = Net(training_config['num_layers'],
state_shape,
device=device,
hidden_layer_size=training_config['hidden_size'])
actor = Actor(net,
action_shape,
1,
device,
hidden_layer_size=training_config['hidden_size']).to(device)
actor_optim = torch.optim.Adam(actor.parameters(),
lr=training_config['actor_lr'])
net = Net(training_config['num_layers'],
state_shape,
action_shape,
concat=True,
device=device,
hidden_layer_size=training_config['hi'])
critic1 = Critic(
net, device,
hidden_layer_size=training_config['hidden_size']).to(device)
critic1_optim = torch.optim.Adam(critic1.parameters(),
lr=training_config['critic_lr'])
critic2 = Critic(
net, device,
hidden_layer_size=training_config['hidden_size']).to(device)
critic2_optim = torch.optim.Adam(critic2.parameters(),
lr=training_config['critic_lr'])
policy = TD3Policy(
actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
action_range=[env.action_space.low, env.action_space.high],
tau=training_config['tau'],
gamma=training_config['gamma'],
exploration_noise=None,
policy_noise=training_config['policy_noise'],
update_actor_freq=training_config['update_actor_freq'],
noise_clip=training_config['noise_clip'],
reward_normalization=training_config['rew_norm'],
ignore_done=training_config['ignore_done'],
estimation_step=training_config['n_step'])
print(env.action_space.low, env.action_space.high)
ep = 0
for _ in range(avg):
obs = env.reset()
obs_batch = Batch(obs=[obs], info={})
ep += 1
traj = []
done = False
count = 0
policy = load_model(policy)
while not done:
if not default:
actions = policy(obs_batch).act.cpu().detach().numpy().reshape(
-1)
else:
actions = np.array([0.5, 1.57, 6, 20, 0.75, 1, 0.3])
obs_new, rew, done, info = env.step(actions)
count += 1
traj.append([obs, actions, rew, done, info])
obs_batch = Batch(obs=[obs_new], info={})
obs = obs_new
# print('count: %d, rew: %f' %(count, rew))
write_buffer(traj, ep, id)
env.close()
def test_ddpg(args=get_args()):
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
# train_envs = gym.make(args.task)
train_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device)
actor = Actor(net,
args.action_shape,
max_action=args.max_action,
device=args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device)
critic = Critic(net, device=args.device).to(args.device)
critic_optim = torch.optim.Adam(critic.parameters(), lr=args.critic_lr)
policy = DDPGPolicy(
actor,
actor_optim,
critic,
critic_optim,
action_range=[env.action_space.low[0], env.action_space.high[0]],
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
reward_normalization=True,
ignore_done=True)
# collector
train_collector = Collector(policy, train_envs,
ReplayBuffer(args.buffer_size))
test_collector = Collector(policy, test_envs)
# log
writer = SummaryWriter(args.logdir + '/' + 'ddpg')
def stop_fn(mean_rewards):
return mean_rewards >= env.spec.reward_threshold
# trainer
result = offpolicy_trainer(policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.collect_per_step,
args.test_num,
args.batch_size,
stop_fn=stop_fn,
writer=writer)
assert stop_fn(result['best_reward'])
if __name__ == '__main__':
pprint.pprint(result)
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=[1] * args.test_num,
render=args.render)
print(f'Final reward: {result["rew"]}, length: {result["len"]}')
def test_td3(args=get_args()):
torch.set_num_threads(1) # we just need only one thread for NN
env = gym.make(args.task)
if args.task == 'Pendulum-v0':
env.spec.reward_threshold = -250
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
# you can also use tianshou.env.SubprocVectorEnv
# train_envs = gym.make(args.task)
train_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.layer_num, args.state_shape, device=args.device)
actor = Actor(net, args.action_shape, args.max_action,
args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net = Net(args.layer_num,
args.state_shape,
args.action_shape,
concat=True,
device=args.device)
critic1 = Critic(net, args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net, args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3Policy(actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
args.tau,
args.gamma,
GaussianNoise(sigma=args.exploration_noise),
args.policy_noise,
args.update_actor_freq,
args.noise_clip,
[env.action_space.low[0], env.action_space.high[0]],
reward_normalization=args.rew_norm,
ignore_done=args.ignore_done,
estimation_step=args.n_step)
# collector
train_collector = Collector(policy, train_envs,
ReplayBuffer(args.buffer_size))
test_collector = Collector(policy, test_envs)
# train_collector.collect(n_step=args.buffer_size)
# log
log_path = os.path.join(args.logdir, args.task, 'td3')
writer = SummaryWriter(log_path)
def save_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(x):
return x >= env.spec.reward_threshold
# trainer
result = offpolicy_trainer(policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.collect_per_step,
args.test_num,
args.batch_size,
stop_fn=stop_fn,
save_fn=save_fn,
writer=writer)
assert stop_fn(result['best_reward'])
if __name__ == '__main__':
pprint.pprint(result)
# Let's watch its performance!
env = gym.make(args.task)
policy.eval()
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
print(f'Final reward: {result["rew"]}, length: {result["len"]}')
train_envs.seed(config['seed'])
'''
net = Net(training_config['layer_num'], state_shape, action_shape, config['device']).to(config['device'])
optim = torch.optim.Adam(net.parameters(), lr=training_config['learning_rate'])
'''
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
net = Net(training_config['num_layers'],
state_shape,
device=device,
hidden_layer_size=training_config['hidden_size'])
actor = Actor(net,
action_shape,
1,
device,
hidden_layer_size=training_config['hidden_size']).to(device)
actor_optim = torch.optim.Adam(actor.parameters(),
lr=training_config['actor_lr'])
net = Net(training_config['num_layers'],
state_shape,
action_shape,
concat=True,
device=device,
hidden_layer_size=training_config['hidden_size'])
critic1 = Critic(net, device,
hidden_layer_size=training_config['hidden_size']).to(device)
critic1_optim = torch.optim.Adam(critic1.parameters(),
lr=training_config['critic_lr'])
critic2 = Critic(net, device,
hidden_layer_size=training_config['hidden_size']).to(device)
critic2_optim = torch.optim.Adam(critic2.parameters(),
lr=training_config['critic_lr'])
def test_td3(args=get_args()):
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
args.exploration_noise = args.exploration_noise * args.max_action
args.policy_noise = args.policy_noise * args.max_action
args.noise_clip = args.noise_clip * args.max_action
print("Observations shape:", args.state_shape)
print("Actions shape:", args.action_shape)
print("Action range:", np.min(env.action_space.low), np.max(env.action_space.high))
# train_envs = gym.make(args.task)
if args.training_num > 1:
train_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)]
)
else:
train_envs = gym.make(args.task)
# test_envs = gym.make(args.task)
test_envs = SubprocVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)]
)
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net_a = Net(args.state_shape, hidden_sizes=args.hidden_sizes, device=args.device)
actor = Actor(
net_a, args.action_shape, max_action=args.max_action, device=args.device
).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net_c1 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device
)
net_c2 = Net(
args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device
)
critic1 = Critic(net_c1, device=args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
critic2 = Critic(net_c2, device=args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3Policy(
actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
policy_noise=args.policy_noise,
update_actor_freq=args.update_actor_freq,
noise_clip=args.noise_clip,
estimation_step=args.n_step,
action_space=env.action_space
)
# load a previous policy
if args.resume_path:
policy.load_state_dict(torch.load(args.resume_path, map_location=args.device))
print("Loaded agent from: ", args.resume_path)
# collector
if args.training_num > 1:
buffer = VectorReplayBuffer(args.buffer_size, len(train_envs))
else:
buffer = ReplayBuffer(args.buffer_size)
train_collector = Collector(policy, train_envs, buffer, exploration_noise=True)
test_collector = Collector(policy, test_envs)
train_collector.collect(n_step=args.start_timesteps, random=True)
# log
t0 = datetime.datetime.now().strftime("%m%d_%H%M%S")
log_file = f'seed_{args.seed}_{t0}-{args.task.replace("-", "_")}_td3'
log_path = os.path.join(args.logdir, args.task, 'td3', log_file)
writer = SummaryWriter(log_path)
writer.add_text("args", str(args))
logger = TensorboardLogger(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
if not args.watch:
# trainer
result = offpolicy_trainer(
policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.step_per_collect,
args.test_num,
args.batch_size,
save_best_fn=save_best_fn,
logger=logger,
update_per_step=args.update_per_step,
test_in_train=False
)
pprint.pprint(result)
# Let's watch its performance!
policy.eval()
test_envs.seed(args.seed)
test_collector.reset()
result = test_collector.collect(n_episode=args.test_num, render=args.render)
print(f'Final reward: {result["rews"].mean()}, length: {result["lens"].mean()}')
def test_td3(args=get_args()):
env = gym.make(args.task)
args.state_shape = env.observation_space.shape or env.observation_space.n
args.action_shape = env.action_space.shape or env.action_space.n
args.max_action = env.action_space.high[0]
if args.reward_threshold is None:
default_reward_threshold = {"Pendulum-v0": -250, "Pendulum-v1": -250}
args.reward_threshold = default_reward_threshold.get(
args.task, env.spec.reward_threshold)
# you can also use tianshou.env.SubprocVectorEnv
# train_envs = gym.make(args.task)
train_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.training_num)])
# test_envs = gym.make(args.task)
test_envs = DummyVectorEnv(
[lambda: gym.make(args.task) for _ in range(args.test_num)])
# seed
np.random.seed(args.seed)
torch.manual_seed(args.seed)
train_envs.seed(args.seed)
test_envs.seed(args.seed)
# model
net = Net(args.state_shape,
hidden_sizes=args.hidden_sizes,
device=args.device)
actor = Actor(net,
args.action_shape,
max_action=args.max_action,
device=args.device).to(args.device)
actor_optim = torch.optim.Adam(actor.parameters(), lr=args.actor_lr)
net_c1 = Net(args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device)
critic1 = Critic(net_c1, device=args.device).to(args.device)
critic1_optim = torch.optim.Adam(critic1.parameters(), lr=args.critic_lr)
net_c2 = Net(args.state_shape,
args.action_shape,
hidden_sizes=args.hidden_sizes,
concat=True,
device=args.device)
critic2 = Critic(net_c2, device=args.device).to(args.device)
critic2_optim = torch.optim.Adam(critic2.parameters(), lr=args.critic_lr)
policy = TD3Policy(
actor,
actor_optim,
critic1,
critic1_optim,
critic2,
critic2_optim,
tau=args.tau,
gamma=args.gamma,
exploration_noise=GaussianNoise(sigma=args.exploration_noise),
policy_noise=args.policy_noise,
update_actor_freq=args.update_actor_freq,
noise_clip=args.noise_clip,
reward_normalization=args.rew_norm,
estimation_step=args.n_step,
action_space=env.action_space)
# collector
train_collector = Collector(policy,
train_envs,
VectorReplayBuffer(args.buffer_size,
len(train_envs)),
exploration_noise=True)
test_collector = Collector(policy, test_envs)
# train_collector.collect(n_step=args.buffer_size)
# log
log_path = os.path.join(args.logdir, args.task, 'td3')
writer = SummaryWriter(log_path)
logger = TensorboardLogger(writer)
def save_best_fn(policy):
torch.save(policy.state_dict(), os.path.join(log_path, 'policy.pth'))
def stop_fn(mean_rewards):
return mean_rewards >= args.reward_threshold
# Iterator trainer
trainer = OffpolicyTrainer(
policy,
train_collector,
test_collector,
args.epoch,
args.step_per_epoch,
args.step_per_collect,
args.test_num,
args.batch_size,
update_per_step=args.update_per_step,
stop_fn=stop_fn,
save_best_fn=save_best_fn,
logger=logger,
)
for epoch, epoch_stat, info in trainer:
print(f"Epoch: {epoch}")
print(epoch_stat)
print(info)
assert stop_fn(info["best_reward"])
if __name__ == "__main__":
pprint.pprint(info)
# Let's watch its performance!
env = gym.make(args.task)
policy.eval()
collector = Collector(policy, env)
result = collector.collect(n_episode=1, render=args.render)
rews, lens = result["rews"], result["lens"]
print(f"Final reward: {rews.mean()}, length: {lens.mean()}")
