def simulate_policy(args):
data = torch.load(args.file)
policy = data['evaluation/policy']
env = data['evaluation/env']
print("Policy loaded")
if args.gpu:
set_gpu_mode(True)
policy.cuda()
paths = []
while True:
path = rollout(
env,
policy,
max_path_length=args.H,
render=True,
)
paths.append(path)
if hasattr(env, "log_diagnostics"):
env.log_diagnostics(paths)
if hasattr(env, "get_diagnostics"):
for k, v in env.get_diagnostics(paths).items():
logger.record_tabular(k, v)
else:
logger.record_dict(
eval_util.get_generic_path_information(paths),
prefix="evaluation/",
)
logger.dump_tabular()
def train_ae(ae_trainer,
training_distrib,
num_epochs=100,
num_batches_per_epoch=500,
batch_size=512,
goal_key='image_desired_goal',
rl_csv_fname='progress.csv'):
from rlkit.core import logger
logger.remove_tabular_output(rl_csv_fname, relative_to_snapshot_dir=True)
logger.add_tabular_output('ae_progress.csv', relative_to_snapshot_dir=True)
for epoch in range(num_epochs):
for batch_num in range(num_batches_per_epoch):
goals = ptu.from_numpy(
training_distrib.sample(batch_size)[goal_key])
batch = dict(raw_next_observations=goals, )
ae_trainer.train_from_torch(batch)
log = OrderedDict()
log['epoch'] = epoch
append_log(log, ae_trainer.eval_statistics, prefix='ae/')
logger.record_dict(log)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
ae_trainer.end_epoch(epoch)
logger.add_tabular_output(rl_csv_fname, relative_to_snapshot_dir=True)
logger.remove_tabular_output('ae_progress.csv',
relative_to_snapshot_dir=True)
def _log_stats(self, epoch):
logger.log("Epoch {} finished".format(epoch), with_timestamp=True)
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(), prefix='trainer/')
"""
Evaluation
"""
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
prefix='evaluation/',
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, 'get_diagnostics'):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
prefix='evaluation/',
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
prefix="evaluation/",
)
"""
Misc
"""
gt.stamp('logging')
logger.record_dict(_get_epoch_timings())
logger.record_tabular('Epoch', epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
def run(self):
if self.progress_csv_file_name != 'progress.csv':
logger.remove_tabular_output('progress.csv',
relative_to_snapshot_dir=True)
logger.add_tabular_output(
self.progress_csv_file_name,
relative_to_snapshot_dir=True,
)
timer.return_global_times = True
for _ in range(self.num_iters):
self._begin_epoch()
timer.start_timer('saving')
logger.save_itr_params(self.epoch, self._get_snapshot())
timer.stop_timer('saving')
log_dict, _ = self._train()
logger.record_dict(log_dict)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
self._end_epoch()
logger.save_itr_params(self.epoch, self._get_snapshot())
if self.progress_csv_file_name != 'progress.csv':
logger.remove_tabular_output(
self.progress_csv_file_name,
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
def _log_vae_stats(self):
logger.record_dict(
self.vae_trainer_original.get_diagnostics(),
prefix='vae_trainer_original/',
)
logger.record_dict(
self.vae_trainer_segmented.get_diagnostics(),
prefix='vae_trainer_segmented/',
)
def train(self):
timer.return_global_times = True
for _ in range(self.num_epochs):
self._begin_epoch()
timer.start_timer('saving')
logger.save_itr_params(self.epoch, self._get_snapshot())
timer.stop_timer('saving')
log_dict, _ = self._train()
logger.record_dict(log_dict)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
self._end_epoch()
logger.save_itr_params(self.epoch, self._get_snapshot())
def pretrain_q_with_bc_data(self, batch_size):
logger.remove_tabular_output('progress.csv',
relative_to_snapshot_dir=True)
logger.add_tabular_output('pretrain_q.csv',
relative_to_snapshot_dir=True)
self.update_policy = True
# then train policy and Q function together
prev_time = time.time()
for i in range(self.num_pretrain_steps):
self.eval_statistics = dict()
if i % self.pretraining_logging_period == 0:
self._need_to_update_eval_statistics = True
train_data = self.replay_buffer.random_batch(batch_size)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
# goals = train_data['resampled_goals']
train_data['observations'] = obs # torch.cat((obs, goals), dim=1)
train_data[
'next_observations'] = next_obs # torch.cat((next_obs, goals), dim=1)
self.train_from_torch(train_data)
if self.do_pretrain_rollouts and i % self.pretraining_env_logging_period == 0:
total_ret = self.do_rollouts()
print("Return at step {} : {}".format(i, total_ret / 20))
if i % self.pretraining_logging_period == 0:
if self.do_pretrain_rollouts:
self.eval_statistics[
"pretrain_bc/avg_return"] = total_ret / 20
self.eval_statistics["batch"] = i
self.eval_statistics["epoch_time"] = time.time() - prev_time
logger.record_dict(self.eval_statistics)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
prev_time = time.time()
logger.remove_tabular_output(
'pretrain_q.csv',
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
self._need_to_update_eval_statistics = True
self.eval_statistics = dict()
def train(self):
# first train only the Q function
iteration = 0
for i in range(self.num_batches):
train_data = self.replay_buffer.random_batch(self.batch_size)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
train_data['observations'] = obs
train_data['next_observations'] = next_obs
self.trainer.train_from_torch(train_data)
if i % self.logging_period == 0:
stats_with_prefix = add_prefix(
self.trainer.eval_statistics, prefix="trainer/")
self.trainer.end_epoch(iteration)
iteration += 1
logger.record_dict(stats_with_prefix)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
def simulate_policy(fpath,
env_name,
seed,
max_path_length,
num_eval_steps,
headless,
max_eps,
verbose=True,
pause=False):
data = torch.load(fpath, map_location=ptu.device)
policy = data['evaluation/policy']
policy.to(ptu.device)
# make new env, reloading with data['evaluation/env'] seems to make bug
env = gym.make(env_name, **{"headless": headless, "verbose": False})
env.seed(seed)
if pause:
input("Waiting to start.")
path_collector = MdpPathCollector(env, policy)
paths = path_collector.collect_new_paths(
max_path_length,
num_eval_steps,
discard_incomplete_paths=True,
)
if max_eps:
paths = paths[:max_eps]
if verbose:
completions = sum([
info["completed"] for path in paths for info in path["env_infos"]
])
print("Completed {} out of {}".format(completions, len(paths)))
# plt.plot(paths[0]["actions"])
# plt.show()
# plt.plot(paths[2]["observations"])
# plt.show()
logger.record_dict(
eval_util.get_generic_path_information(paths),
prefix="evaluation/",
)
logger.dump_tabular()
return paths
def pretrain_q_with_bc_data(self, batch_size):
logger.remove_tabular_output('progress.csv',
relative_to_snapshot_dir=True)
logger.add_tabular_output('pretrain_q.csv',
relative_to_snapshot_dir=True)
prev_time = time.time()
for i in range(self.num_pretrain_steps):
self.eval_statistics = dict()
if i % self.pretraining_logging_period == 0:
self._need_to_update_eval_statistics = True
train_data = self.replay_buffer.random_batch(self.bc_batch_size)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
# goals = train_data['resampled_goals']
train_data['observations'] = obs # torch.cat((obs, goals), dim=1)
train_data[
'next_observations'] = next_obs # torch.cat((next_obs, goals), dim=1)
self.train_from_torch(train_data, pretrain=True)
if i % self.pretraining_logging_period == 0:
self.eval_statistics["batch"] = i
self.eval_statistics["epoch_time"] = time.time() - prev_time
stats_with_prefix = add_prefix(self.eval_statistics,
prefix="trainer/")
logger.record_dict(stats_with_prefix)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
prev_time = time.time()
logger.remove_tabular_output(
'pretrain_q.csv',
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
self._need_to_update_eval_statistics = True
self.eval_statistics = dict()
def train(self):
# first train only the Q function
iteration = 0
timer.return_global_times = True
timer.reset()
for i in range(self.num_batches):
if self.use_meta_learning_buffer:
train_data = self.meta_replay_buffer.sample_meta_batch(
rl_batch_size=self.batch_size,
meta_batch_size=self.meta_batch_size,
embedding_batch_size=self.task_embedding_batch_size,
)
train_data = np_to_pytorch_batch(train_data)
else:
task_indices = np.random.choice(
self.train_tasks, self.meta_batch_size,
)
train_data = self.replay_buffer.sample_batch(
task_indices,
self.batch_size,
)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
train_data['observations'] = obs
train_data['next_observations'] = next_obs
train_data['context'] = (
self.task_embedding_replay_buffer.sample_context(
task_indices,
self.task_embedding_batch_size,
))
timer.start_timer('train', unique=False)
self.trainer.train_from_torch(train_data)
timer.stop_timer('train')
if i % self.logging_period == 0 or i == self.num_batches - 1:
stats_with_prefix = add_prefix(
self.trainer.eval_statistics, prefix="trainer/")
self.trainer.end_epoch(iteration)
logger.record_dict(stats_with_prefix)
timer.start_timer('extra_fns', unique=False)
for fn in self._extra_eval_fns:
extra_stats = fn()
logger.record_dict(extra_stats)
timer.stop_timer('extra_fns')
# TODO: evaluate during offline RL
# eval_stats = self.get_eval_statistics()
# eval_stats_with_prefix = add_prefix(eval_stats, prefix="eval/")
# logger.record_dict(eval_stats_with_prefix)
logger.record_tabular('iteration', iteration)
logger.record_dict(_get_epoch_timings())
try:
import os
import psutil
process = psutil.Process(os.getpid())
logger.record_tabular('RAM Usage (Mb)', int(process.memory_info().rss / 1000000))
except ImportError:
pass
logger.dump_tabular(with_prefix=True, with_timestamp=False)
iteration += 1
def _log_stats(self, epoch, num_epochs_per_eval=0):
logger.log("Epoch {} finished".format(epoch), with_timestamp=True)
"""
Replay Buffer
"""
logger.record_dict(self.replay_buffer.get_diagnostics(),
prefix='replay_buffer/')
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(), prefix='trainer/')
"""
Exploration
"""
logger.record_dict(self.expl_data_collector.get_diagnostics(),
prefix='exploration/')
expl_paths = self.expl_data_collector.get_epoch_paths()
if hasattr(self.expl_env, 'get_diagnostics'):
logger.record_dict(
self.expl_env.get_diagnostics(expl_paths),
prefix='exploration/',
)
logger.record_dict(
eval_util.get_generic_path_information(expl_paths),
prefix="exploration/",
)
"""
Evaluation
"""
try:
# if epoch % num_epochs_per_eval == 0:
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
prefix='evaluation/',
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, 'get_diagnostics'):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
prefix='evaluation/',
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
prefix="evaluation/",
)
except:
pass
"""
Misc
"""
gt.stamp('logging')
logger.record_dict(_get_epoch_timings())
logger.record_tabular('Epoch', epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
def _log_stats(self, epoch):
logger.log("Epoch {} finished".format(epoch), with_timestamp=True)
"""
Replay Buffer
"""
logger.record_dict(self.replay_buffer.get_diagnostics(),
prefix='replay_buffer/')
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(), prefix='trainer/')
"""
Exploration
"""
logger.record_dict(self.expl_data_collector.get_diagnostics(),
prefix='exploration/')
expl_paths = self.expl_data_collector.get_epoch_paths()
# import ipdb; ipdb.set_trace()
if hasattr(self.expl_env, 'get_diagnostics'):
logger.record_dict(
self.expl_env.get_diagnostics(expl_paths),
prefix='exploration/',
)
if not self.batch_rl or self.eval_both:
logger.record_dict(
eval_util.get_generic_path_information(expl_paths),
prefix="exploration/",
)
"""
Evaluation
"""
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
prefix='evaluation/',
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, 'get_diagnostics'):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
prefix='evaluation/',
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
prefix="evaluation/",
)
"""
Misc
"""
gt.stamp('logging')
logger.record_dict(_get_epoch_timings())
logger.record_tabular('Epoch', epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
def pretrain_q_with_bc_data(self):
"""
:return:
"""
logger.remove_tabular_output('progress.csv',
relative_to_snapshot_dir=True)
logger.add_tabular_output('pretrain_q.csv',
relative_to_snapshot_dir=True)
self.update_policy = False
# first train only the Q function
for i in range(self.q_num_pretrain1_steps):
self.eval_statistics = dict()
train_data = self.replay_buffer.random_batch(self.bc_batch_size)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
# goals = train_data['resampled_goals']
train_data['observations'] = obs # torch.cat((obs, goals), dim=1)
train_data[
'next_observations'] = next_obs # torch.cat((next_obs, goals), dim=1)
self.train_from_torch(train_data, pretrain=True)
if i % self.pretraining_logging_period == 0:
stats_with_prefix = add_prefix(self.eval_statistics,
prefix="trainer/")
logger.record_dict(stats_with_prefix)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
self.update_policy = True
# then train policy and Q function together
prev_time = time.time()
for i in range(self.q_num_pretrain2_steps):
self.eval_statistics = dict()
if i % self.pretraining_logging_period == 0:
self._need_to_update_eval_statistics = True
train_data = self.replay_buffer.random_batch(self.bc_batch_size)
train_data = np_to_pytorch_batch(train_data)
obs = train_data['observations']
next_obs = train_data['next_observations']
# goals = train_data['resampled_goals']
train_data['observations'] = obs # torch.cat((obs, goals), dim=1)
train_data[
'next_observations'] = next_obs # torch.cat((next_obs, goals), dim=1)
self.train_from_torch(train_data, pretrain=True)
if i % self.pretraining_logging_period == 0:
self.eval_statistics["batch"] = i
self.eval_statistics["epoch_time"] = time.time() - prev_time
stats_with_prefix = add_prefix(self.eval_statistics,
prefix="trainer/")
logger.record_dict(stats_with_prefix)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
prev_time = time.time()
logger.remove_tabular_output(
'pretrain_q.csv',
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
self._need_to_update_eval_statistics = True
self.eval_statistics = dict()
if self.post_pretrain_hyperparams:
self.set_algorithm_weights(**self.post_pretrain_hyperparams)
def pretrain_policy_with_bc(
self,
policy,
train_buffer,
test_buffer,
steps,
label="policy",
):
"""Given a policy, first get its optimizer, then run the policy on the train buffer, get the
losses, and back propagate the loss. After training on a batch, test on the test buffer and
get the statistics
:param policy:
:param train_buffer:
:param test_buffer:
:param steps:
:param label:
:return:
"""
logger.remove_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'pretrain_%s.csv' % label,
relative_to_snapshot_dir=True,
)
optimizer = self.optimizers[policy]
prev_time = time.time()
for i in range(steps):
train_policy_loss, train_logp_loss, train_mse_loss, train_stats = self.run_bc_batch(
train_buffer, policy)
train_policy_loss = train_policy_loss * self.bc_weight
optimizer.zero_grad()
train_policy_loss.backward()
optimizer.step()
test_policy_loss, test_logp_loss, test_mse_loss, test_stats = self.run_bc_batch(
test_buffer, policy)
test_policy_loss = test_policy_loss * self.bc_weight
if i % self.pretraining_logging_period == 0:
stats = {
"pretrain_bc/batch":
i,
"pretrain_bc/Train Logprob Loss":
ptu.get_numpy(train_logp_loss),
"pretrain_bc/Test Logprob Loss":
ptu.get_numpy(test_logp_loss),
"pretrain_bc/Train MSE":
ptu.get_numpy(train_mse_loss),
"pretrain_bc/Test MSE":
ptu.get_numpy(test_mse_loss),
"pretrain_bc/train_policy_loss":
ptu.get_numpy(train_policy_loss),
"pretrain_bc/test_policy_loss":
ptu.get_numpy(test_policy_loss),
"pretrain_bc/epoch_time":
time.time() - prev_time,
}
logger.record_dict(stats)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
pickle.dump(
self.policy,
open(logger.get_snapshot_dir() + '/bc_%s.pkl' % label,
"wb"))
prev_time = time.time()
logger.remove_tabular_output(
'pretrain_%s.csv' % label,
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
if self.post_bc_pretrain_hyperparams:
self.set_algorithm_weights(**self.post_bc_pretrain_hyperparams)
def _log_stats(self, epoch):
logger.log("Epoch {} finished".format(epoch), with_timestamp=True)
"""
Replay Buffer
"""
logger.record_dict(
self.replay_buffer.get_diagnostics(),
global_step=epoch,
prefix="replay_buffer/",
)
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(),
global_step=epoch,
prefix="trainer/")
"""
Exploration
"""
logger.record_dict(
self.expl_data_collector.get_diagnostics(),
global_step=epoch,
prefix="exploration/",
)
expl_paths = self.expl_data_collector.get_epoch_paths()
if hasattr(self.expl_env, "get_diagnostics"):
logger.record_dict(
self.expl_env.get_diagnostics(expl_paths),
global_step=epoch,
prefix="exploration/",
)
logger.record_dict(
eval_util.get_generic_path_information(expl_paths),
global_step=epoch,
prefix="exploration/",
)
"""
Evaluation
"""
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
global_step=epoch,
prefix="evaluation/",
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, "get_diagnostics"):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
global_step=epoch,
prefix="evaluation/",
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
global_step=epoch,
prefix="evaluation/",
)
"""
Misc
"""
gt.stamp("logging")
logger.record_dict(_get_epoch_timings(), global_step=epoch)
logger.record_tabular("Epoch", epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
def run_eval_loop(sample_stochastically=True):
start_time = time.time()
prefix = "stochastic_" if sample_stochastically else ""
for i in range(num_episodes):
obs = env.reset()
video.init(enabled=(i == 0))
done = False
episode_reward = 0
ep_infos = []
while not done:
# center crop image
if encoder_type == "pixel" and "crop" in data_augs:
obs = utils.center_crop_image(obs, image_size)
if encoder_type == "pixel" and "translate" in data_augs:
# first crop the center with pre_transform_image_size
obs = utils.center_crop_image(obs, pre_transform_image_size)
# then translate cropped to center
obs = utils.center_translate(obs, image_size)
with utils.eval_mode(agent):
if sample_stochastically:
action = agent.sample_action(obs / 255.0)
else:
action = agent.select_action(obs / 255.0)
obs, reward, done, info = env.step(action)
video.record(env)
episode_reward += reward
ep_infos.append(info)
video.save("%d.mp4" % step)
L.log("eval/" + prefix + "episode_reward", episode_reward, step)
all_ep_rewards.append(episode_reward)
all_infos.append(ep_infos)
L.log("eval/" + prefix + "eval_time", time.time() - start_time, step)
mean_ep_reward = np.mean(all_ep_rewards)
best_ep_reward = np.max(all_ep_rewards)
std_ep_reward = np.std(all_ep_rewards)
L.log("eval/" + prefix + "mean_episode_reward", mean_ep_reward, step)
L.log("eval/" + prefix + "best_episode_reward", best_ep_reward, step)
rlkit_logger.record_dict(
{"Average Returns": mean_ep_reward}, prefix="evaluation/"
)
statistics = compute_path_info(all_infos)
rlkit_logger.record_dict(statistics, prefix="evaluation/")
filename = (
work_dir
+ "/"
+ env_name
+ "-"
+ data_augs
+ "--s"
+ str(seed)
+ "--eval_scores.npy"
)
key = env_name + "-" + data_augs
try:
log_data = np.load(filename, allow_pickle=True)
log_data = log_data.item()
except:
log_data = {}
if key not in log_data:
log_data[key] = {}
log_data[key][step] = {}
log_data[key][step]["step"] = step
log_data[key][step]["mean_ep_reward"] = mean_ep_reward
log_data[key][step]["max_ep_reward"] = best_ep_reward
log_data[key][step]["std_ep_reward"] = std_ep_reward
log_data[key][step]["env_step"] = step * action_repeat
np.save(filename, log_data)
def experiment(variant):
gym.logger.set_level(40)
work_dir = rlkit_logger.get_snapshot_dir()
args = parse_args()
seed = int(variant["seed"])
utils.set_seed_everywhere(seed)
os.makedirs(work_dir, exist_ok=True)
agent_kwargs = variant["agent_kwargs"]
data_augs = agent_kwargs["data_augs"]
encoder_type = agent_kwargs["encoder_type"]
discrete_continuous_dist = agent_kwargs["discrete_continuous_dist"]
env_suite = variant["env_suite"]
env_name = variant["env_name"]
env_kwargs = variant["env_kwargs"]
pre_transform_image_size = variant["pre_transform_image_size"]
image_size = variant["image_size"]
frame_stack = variant["frame_stack"]
batch_size = variant["batch_size"]
replay_buffer_capacity = variant["replay_buffer_capacity"]
num_train_steps = variant["num_train_steps"]
num_eval_episodes = variant["num_eval_episodes"]
eval_freq = variant["eval_freq"]
action_repeat = variant["action_repeat"]
init_steps = variant["init_steps"]
log_interval = variant["log_interval"]
use_raw_actions = variant["use_raw_actions"]
pre_transform_image_size = (
pre_transform_image_size if "crop" in data_augs else image_size
)
pre_transform_image_size = pre_transform_image_size
if data_augs == "crop":
pre_transform_image_size = 100
image_size = image_size
elif data_augs == "translate":
pre_transform_image_size = 100
image_size = 108
if env_suite == 'kitchen':
env_kwargs['imwidth'] = pre_transform_image_size
env_kwargs['imheight'] = pre_transform_image_size
else:
env_kwargs['image_kwargs']['imwidth'] = pre_transform_image_size
env_kwargs['image_kwargs']['imheight'] = pre_transform_image_size
expl_env = primitives_make_env.make_env(env_suite, env_name, env_kwargs)
eval_env = primitives_make_env.make_env(env_suite, env_name, env_kwargs)
# stack several consecutive frames together
if encoder_type == "pixel":
expl_env = utils.FrameStack(expl_env, k=frame_stack)
eval_env = utils.FrameStack(eval_env, k=frame_stack)
# make directory
ts = time.gmtime()
ts = time.strftime("%m-%d", ts)
env_name = env_name
exp_name = (
env_name
+ "-"
+ ts
+ "-im"
+ str(image_size)
+ "-b"
+ str(batch_size)
+ "-s"
+ str(seed)
+ "-"
+ encoder_type
)
work_dir = work_dir + "/" + exp_name
utils.make_dir(work_dir)
video_dir = utils.make_dir(os.path.join(work_dir, "video"))
model_dir = utils.make_dir(os.path.join(work_dir, "model"))
buffer_dir = utils.make_dir(os.path.join(work_dir, "buffer"))
video = VideoRecorder(video_dir if args.save_video else None)
with open(os.path.join(work_dir, "args.json"), "w") as f:
json.dump(vars(args), f, sort_keys=True, indent=4)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if use_raw_actions:
continuous_action_dim = expl_env.action_space.low.size
discrete_action_dim = 0
else:
num_primitives = expl_env.num_primitives
max_arg_len = expl_env.max_arg_len
if discrete_continuous_dist:
continuous_action_dim = max_arg_len
discrete_action_dim = num_primitives
else:
continuous_action_dim = max_arg_len + num_primitives
discrete_action_dim = 0
if encoder_type == "pixel":
obs_shape = (3 * frame_stack, image_size, image_size)
pre_aug_obs_shape = (
3 * frame_stack,
pre_transform_image_size,
pre_transform_image_size,
)
else:
obs_shape = env.observation_space.shape
pre_aug_obs_shape = obs_shape
replay_buffer = utils.ReplayBuffer(
obs_shape=pre_aug_obs_shape,
action_size=continuous_action_dim + discrete_action_dim,
capacity=replay_buffer_capacity,
batch_size=batch_size,
device=device,
image_size=image_size,
pre_image_size=pre_transform_image_size,
)
agent = make_agent(
obs_shape=obs_shape,
continuous_action_dim=continuous_action_dim,
discrete_action_dim=discrete_action_dim,
args=args,
device=device,
agent_kwargs=agent_kwargs,
)
L = Logger(work_dir, use_tb=args.save_tb)
episode, episode_reward, done = 0, 0, True
start_time = time.time()
epoch_start_time = time.time()
train_expl_st = time.time()
total_train_expl_time = 0
all_infos = []
ep_infos = []
num_train_calls = 0
for step in range(num_train_steps):
# evaluate agent periodically
if step % eval_freq == 0:
total_train_expl_time += time.time()-train_expl_st
L.log("eval/episode", episode, step)
evaluate(
eval_env,
agent,
video,
num_eval_episodes,
L,
step,
encoder_type,
data_augs,
image_size,
pre_transform_image_size,
env_name,
action_repeat,
work_dir,
seed,
)
if args.save_model:
agent.save_curl(model_dir, step)
if args.save_buffer:
replay_buffer.save(buffer_dir)
train_expl_st = time.time()
if done:
if step > 0:
if step % log_interval == 0:
L.log("train/duration", time.time() - epoch_start_time, step)
L.dump(step)
if step % log_interval == 0:
L.log("train/episode_reward", episode_reward, step)
obs = expl_env.reset()
done = False
episode_reward = 0
episode_step = 0
episode += 1
if step % log_interval == 0:
all_infos.append(ep_infos)
L.log("train/episode", episode, step)
statistics = compute_path_info(all_infos)
rlkit_logger.record_dict(statistics, prefix="exploration/")
rlkit_logger.record_tabular(
"time/epoch (s)", time.time() - epoch_start_time
)
rlkit_logger.record_tabular("time/total (s)", time.time() - start_time)
rlkit_logger.record_tabular("time/training and exploration (s)", total_train_expl_time)
rlkit_logger.record_tabular("trainer/num train calls", num_train_calls)
rlkit_logger.record_tabular("exploration/num steps total", step)
rlkit_logger.record_tabular("Epoch", step // log_interval)
rlkit_logger.dump_tabular(with_prefix=False, with_timestamp=False)
all_infos = []
epoch_start_time = time.time()
ep_infos = []
# sample action for data collection
if step < init_steps:
action = expl_env.action_space.sample()
else:
with utils.eval_mode(agent):
action = agent.sample_action(obs / 255.0)
# run training update
if step >= init_steps:
num_updates = 1
for _ in range(num_updates):
agent.update(replay_buffer, L, step)
num_train_calls += 1
next_obs, reward, done, info = expl_env.step(action)
ep_infos.append(info)
# allow infinit bootstrap
done_bool = (
0 if episode_step + 1 == expl_env._max_episode_steps else float(done)
)
episode_reward += reward
replay_buffer.add(obs, action, reward, next_obs, done_bool)
obs = next_obs
episode_step += 1
def _log_stats(self, epoch):
logger.log(f"Epoch {epoch} finished", with_timestamp=True)
"""
Replay Buffer
"""
logger.record_dict(
self.replay_buffer.get_diagnostics(), prefix="replay_buffer/"
)
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(), prefix="trainer/")
"""
Exploration
"""
logger.record_dict(
self.expl_data_collector.get_diagnostics(), prefix="exploration/"
)
expl_paths = self.expl_data_collector.get_epoch_paths()
if len(expl_paths) > 0:
if hasattr(self.expl_env, "get_diagnostics"):
logger.record_dict(
self.expl_env.get_diagnostics(expl_paths),
prefix="exploration/",
)
logger.record_dict(
eval_util.get_generic_path_information(expl_paths),
prefix="exploration/",
)
"""
Evaluation
"""
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
prefix="evaluation/",
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, "get_diagnostics"):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
prefix="evaluation/",
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
prefix="evaluation/",
)
"""
Misc
"""
gt.stamp("logging")
timings = _get_epoch_timings()
timings["time/training and exploration (s)"] = self.total_train_expl_time
logger.record_dict(timings)
logger.record_tabular("Epoch", epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
def pretrain_policy_with_bc(self):
if self.buffer_for_bc_training == "demos":
self.bc_training_buffer = self.demo_train_buffer
self.bc_test_buffer = self.demo_test_buffer
elif self.buffer_for_bc_training == "replay_buffer":
self.bc_training_buffer = self.replay_buffer.train_replay_buffer
self.bc_test_buffer = self.replay_buffer.validation_replay_buffer
else:
self.bc_training_buffer = None
self.bc_test_buffer = None
if self.load_policy_path:
self.policy = load_local_or_remote_file(self.load_policy_path)
ptu.copy_model_params_from_to(self.policy, self.target_policy)
return
logger.remove_tabular_output('progress.csv',
relative_to_snapshot_dir=True)
logger.add_tabular_output('pretrain_policy.csv',
relative_to_snapshot_dir=True)
if self.do_pretrain_rollouts:
total_ret = self.do_rollouts()
print("INITIAL RETURN", total_ret / 20)
prev_time = time.time()
for i in range(self.bc_num_pretrain_steps):
train_policy_loss, train_logp_loss, train_mse_loss, train_log_std = self.run_bc_batch(
self.demo_train_buffer, self.policy)
train_policy_loss = train_policy_loss * self.bc_weight
self.policy_optimizer.zero_grad()
train_policy_loss.backward()
self.policy_optimizer.step()
test_policy_loss, test_logp_loss, test_mse_loss, test_log_std = self.run_bc_batch(
self.demo_test_buffer, self.policy)
test_policy_loss = test_policy_loss * self.bc_weight
if self.do_pretrain_rollouts and i % self.pretraining_env_logging_period == 0:
total_ret = self.do_rollouts()
print("Return at step {} : {}".format(i, total_ret / 20))
if i % self.pretraining_logging_period == 0:
stats = {
"pretrain_bc/batch":
i,
"pretrain_bc/Train Logprob Loss":
ptu.get_numpy(train_logp_loss),
"pretrain_bc/Test Logprob Loss":
ptu.get_numpy(test_logp_loss),
"pretrain_bc/Train MSE":
ptu.get_numpy(train_mse_loss),
"pretrain_bc/Test MSE":
ptu.get_numpy(test_mse_loss),
"pretrain_bc/train_policy_loss":
ptu.get_numpy(train_policy_loss),
"pretrain_bc/test_policy_loss":
ptu.get_numpy(test_policy_loss),
"pretrain_bc/epoch_time":
time.time() - prev_time,
}
if self.do_pretrain_rollouts:
stats["pretrain_bc/avg_return"] = total_ret / 20
logger.record_dict(stats)
logger.dump_tabular(with_prefix=True, with_timestamp=False)
pickle.dump(self.policy,
open(logger.get_snapshot_dir() + '/bc.pkl', "wb"))
prev_time = time.time()
logger.remove_tabular_output(
'pretrain_policy.csv',
relative_to_snapshot_dir=True,
)
logger.add_tabular_output(
'progress.csv',
relative_to_snapshot_dir=True,
)
ptu.copy_model_params_from_to(self.policy, self.target_policy)
if self.post_bc_pretrain_hyperparams:
self.set_algorithm_weights(**self.post_bc_pretrain_hyperparams)
def _try_to_eval(self, epoch):
if epoch % self.logging_period != 0:
return
if epoch in self.save_extra_manual_epoch_set:
logger.save_extra_data(
self.get_extra_data_to_save(epoch),
file_name='extra_snapshot_itr{}'.format(epoch),
mode='cloudpickle',
)
if self._save_extra_every_epoch:
logger.save_extra_data(self.get_extra_data_to_save(epoch))
gt.stamp('save-extra')
if self._can_evaluate():
self.evaluate(epoch)
gt.stamp('eval')
params = self.get_epoch_snapshot(epoch)
logger.save_itr_params(epoch, params)
gt.stamp('save-snapshot')
table_keys = logger.get_table_key_set()
if self._old_table_keys is not None:
assert table_keys == self._old_table_keys, (
"Table keys cannot change from iteration to iteration.")
self._old_table_keys = table_keys
logger.record_dict(
self.trainer.get_diagnostics(),
prefix='trainer/',
)
logger.record_tabular(
"Number of train steps total",
self._n_train_steps_total,
)
logger.record_tabular(
"Number of env steps total",
self._n_env_steps_total,
)
logger.record_tabular(
"Number of rollouts total",
self._n_rollouts_total,
)
times_itrs = gt.get_times().stamps.itrs
train_time = times_itrs['train'][-1]
sample_time = times_itrs['sample'][-1]
save_extra_time = times_itrs['save-extra'][-1]
save_snapshot_time = times_itrs['save-snapshot'][-1]
eval_time = times_itrs['eval'][-1] if epoch > 0 else 0
epoch_time = train_time + sample_time + save_extra_time + eval_time
total_time = gt.get_times().total
logger.record_tabular('in_unsupervised_model',
float(self.in_unsupervised_phase))
logger.record_tabular('Train Time (s)', train_time)
logger.record_tabular('(Previous) Eval Time (s)', eval_time)
logger.record_tabular('Sample Time (s)', sample_time)
logger.record_tabular('Save Extra Time (s)', save_extra_time)
logger.record_tabular('Save Snapshot Time (s)', save_snapshot_time)
logger.record_tabular('Epoch Time (s)', epoch_time)
logger.record_tabular('Total Train Time (s)', total_time)
logger.record_tabular("Epoch", epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
else:
logger.log("Skipping eval for now.")
def experiment(variant):
import numpy as np
import torch
from torch import nn, optim
from tqdm import tqdm
import rlkit.torch.pytorch_util as ptu
from rlkit.core import logger
from rlkit.envs.primitives_make_env import make_env
from rlkit.torch.model_based.dreamer.mlp import Mlp, MlpResidual
from rlkit.torch.model_based.dreamer.train_world_model import (
compute_world_model_loss,
get_dataloader,
get_dataloader_rt,
get_dataloader_separately,
update_network,
visualize_rollout,
world_model_loss_rt,
)
from rlkit.torch.model_based.dreamer.world_models import (
LowlevelRAPSWorldModel,
WorldModel,
)
env_suite, env_name, env_kwargs = (
variant["env_suite"],
variant["env_name"],
variant["env_kwargs"],
)
max_path_length = variant["env_kwargs"]["max_path_length"]
low_level_primitives = variant["low_level_primitives"]
num_low_level_actions_per_primitive = variant[
"num_low_level_actions_per_primitive"]
low_level_action_dim = variant["low_level_action_dim"]
dataloader_kwargs = variant["dataloader_kwargs"]
env = make_env(env_suite, env_name, env_kwargs)
world_model_kwargs = variant["model_kwargs"]
optimizer_kwargs = variant["optimizer_kwargs"]
gradient_clip = variant["gradient_clip"]
if low_level_primitives:
world_model_kwargs["action_dim"] = low_level_action_dim
else:
world_model_kwargs["action_dim"] = env.action_space.low.shape[0]
image_shape = env.image_shape
world_model_kwargs["image_shape"] = image_shape
scaler = torch.cuda.amp.GradScaler()
world_model_loss_kwargs = variant["world_model_loss_kwargs"]
clone_primitives = variant["clone_primitives"]
clone_primitives_separately = variant["clone_primitives_separately"]
clone_primitives_and_train_world_model = variant.get(
"clone_primitives_and_train_world_model", False)
batch_len = variant.get("batch_len", 100)
num_epochs = variant["num_epochs"]
loss_to_use = variant.get("loss_to_use", "both")
logdir = logger.get_snapshot_dir()
if clone_primitives_separately:
(
train_dataloaders,
test_dataloaders,
train_datasets,
test_datasets,
) = get_dataloader_separately(
variant["datafile"],
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
num_primitives=env.num_primitives,
env=env,
**dataloader_kwargs,
)
elif clone_primitives_and_train_world_model:
print("LOADING DATA")
(
train_dataloader,
test_dataloader,
train_dataset,
test_dataset,
) = get_dataloader_rt(
variant["datafile"],
max_path_length=max_path_length *
num_low_level_actions_per_primitive + 1,
**dataloader_kwargs,
)
elif low_level_primitives or clone_primitives:
print("LOADING DATA")
(
train_dataloader,
test_dataloader,
train_dataset,
test_dataset,
) = get_dataloader(
variant["datafile"],
max_path_length=max_path_length *
num_low_level_actions_per_primitive + 1,
**dataloader_kwargs,
)
else:
train_dataloader, test_dataloader, train_dataset, test_dataset = get_dataloader(
variant["datafile"],
max_path_length=max_path_length + 1,
**dataloader_kwargs,
)
if clone_primitives_and_train_world_model:
if variant["mlp_act"] == "elu":
mlp_act = nn.functional.elu
elif variant["mlp_act"] == "relu":
mlp_act = nn.functional.relu
if variant["mlp_res"]:
mlp_class = MlpResidual
else:
mlp_class = Mlp
criterion = nn.MSELoss()
primitive_model = mlp_class(
hidden_sizes=variant["mlp_hidden_sizes"],
output_size=low_level_action_dim,
input_size=250 + env.action_space.low.shape[0] + 1,
hidden_activation=mlp_act,
).to(ptu.device)
world_model_class = LowlevelRAPSWorldModel
world_model = world_model_class(
primitive_model=primitive_model,
**world_model_kwargs,
).to(ptu.device)
optimizer = optim.Adam(
world_model.parameters(),
**optimizer_kwargs,
)
best_test_loss = np.inf
for i in tqdm(range(num_epochs)):
eval_statistics = OrderedDict()
print("Epoch: ", i)
total_primitive_loss = 0
total_world_model_loss = 0
total_div_loss = 0
total_image_pred_loss = 0
total_transition_loss = 0
total_entropy_loss = 0
total_pred_discount_loss = 0
total_reward_pred_loss = 0
total_train_steps = 0
for data in train_dataloader:
with torch.cuda.amp.autocast():
(
high_level_actions,
obs,
rewards,
terminals,
), low_level_actions = data
obs = obs.to(ptu.device).float()
low_level_actions = low_level_actions.to(
ptu.device).float()
high_level_actions = high_level_actions.to(
ptu.device).float()
rewards = rewards.to(ptu.device).float()
terminals = terminals.to(ptu.device).float()
assert all(terminals[:, -1] == 1)
rt_idxs = np.arange(
num_low_level_actions_per_primitive,
obs.shape[1],
num_low_level_actions_per_primitive,
)
rt_idxs = np.concatenate(
[[0], rt_idxs]
) # reset obs, effect of first primitive, second primitive, so on
batch_start = np.random.randint(0,
obs.shape[1] - batch_len,
size=(obs.shape[0]))
batch_indices = np.linspace(
batch_start,
batch_start + batch_len,
batch_len,
endpoint=False,
).astype(int)
(
post,
prior,
post_dist,
prior_dist,
image_dist,
reward_dist,
pred_discount_dist,
_,
action_preds,
) = world_model(
obs,
(high_level_actions, low_level_actions),
use_network_action=False,
batch_indices=batch_indices,
rt_idxs=rt_idxs,
)
obs = world_model.flatten_obs(
obs[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2),
(int(np.prod(image_shape)), ),
)
rewards = rewards.reshape(-1, rewards.shape[-1])
terminals = terminals.reshape(-1, terminals.shape[-1])
(
world_model_loss,
div,
image_pred_loss,
reward_pred_loss,
transition_loss,
entropy_loss,
pred_discount_loss,
) = world_model_loss_rt(
world_model,
image_shape,
image_dist,
reward_dist,
{
key: value[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2).reshape(
-1, value.shape[-1])
for key, value in prior.items()
},
{
key: value[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2).reshape(
-1, value.shape[-1])
for key, value in post.items()
},
prior_dist,
post_dist,
pred_discount_dist,
obs,
rewards,
terminals,
**world_model_loss_kwargs,
)
batch_start = np.random.randint(
0,
low_level_actions.shape[1] - batch_len,
size=(low_level_actions.shape[0]),
)
batch_indices = np.linspace(
batch_start,
batch_start + batch_len,
batch_len,
endpoint=False,
).astype(int)
primitive_loss = criterion(
action_preds[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2).reshape(
-1, action_preds.shape[-1]),
low_level_actions[:, 1:]
[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2).reshape(
-1, action_preds.shape[-1]),
)
total_primitive_loss += primitive_loss.item()
total_world_model_loss += world_model_loss.item()
total_div_loss += div.item()
total_image_pred_loss += image_pred_loss.item()
total_transition_loss += transition_loss.item()
total_entropy_loss += entropy_loss.item()
total_pred_discount_loss += pred_discount_loss.item()
total_reward_pred_loss += reward_pred_loss.item()
if loss_to_use == "wm":
loss = world_model_loss
elif loss_to_use == "primitive":
loss = primitive_loss
else:
loss = world_model_loss + primitive_loss
total_train_steps += 1
update_network(world_model, optimizer, loss, gradient_clip,
scaler)
scaler.update()
eval_statistics["train/primitive_loss"] = (total_primitive_loss /
total_train_steps)
eval_statistics["train/world_model_loss"] = (
total_world_model_loss / total_train_steps)
eval_statistics["train/image_pred_loss"] = (total_image_pred_loss /
total_train_steps)
eval_statistics["train/transition_loss"] = (total_transition_loss /
total_train_steps)
eval_statistics["train/entropy_loss"] = (total_entropy_loss /
total_train_steps)
eval_statistics["train/pred_discount_loss"] = (
total_pred_discount_loss / total_train_steps)
eval_statistics["train/reward_pred_loss"] = (
total_reward_pred_loss / total_train_steps)
latest_state_dict = world_model.state_dict().copy()
with torch.no_grad():
total_primitive_loss = 0
total_world_model_loss = 0
total_div_loss = 0
total_image_pred_loss = 0
total_transition_loss = 0
total_entropy_loss = 0
total_pred_discount_loss = 0
total_reward_pred_loss = 0
total_loss = 0
total_test_steps = 0
for data in test_dataloader:
with torch.cuda.amp.autocast():
(
high_level_actions,
obs,
rewards,
terminals,
), low_level_actions = data
obs = obs.to(ptu.device).float()
low_level_actions = low_level_actions.to(
ptu.device).float()
high_level_actions = high_level_actions.to(
ptu.device).float()
rewards = rewards.to(ptu.device).float()
terminals = terminals.to(ptu.device).float()
assert all(terminals[:, -1] == 1)
rt_idxs = np.arange(
num_low_level_actions_per_primitive,
obs.shape[1],
num_low_level_actions_per_primitive,
)
rt_idxs = np.concatenate(
[[0], rt_idxs]
) # reset obs, effect of first primitive, second primitive, so on
batch_start = np.random.randint(0,
obs.shape[1] -
batch_len,
size=(obs.shape[0]))
batch_indices = np.linspace(
batch_start,
batch_start + batch_len,
batch_len,
endpoint=False,
).astype(int)
(
post,
prior,
post_dist,
prior_dist,
image_dist,
reward_dist,
pred_discount_dist,
_,
action_preds,
) = world_model(
obs,
(high_level_actions, low_level_actions),
use_network_action=False,
batch_indices=batch_indices,
rt_idxs=rt_idxs,
)
obs = world_model.flatten_obs(
obs[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2),
(int(np.prod(image_shape)), ),
)
rewards = rewards.reshape(-1, rewards.shape[-1])
terminals = terminals.reshape(-1, terminals.shape[-1])
(
world_model_loss,
div,
image_pred_loss,
reward_pred_loss,
transition_loss,
entropy_loss,
pred_discount_loss,
) = world_model_loss_rt(
world_model,
image_shape,
image_dist,
reward_dist,
{
key: value[np.arange(batch_indices.shape[1]),
batch_indices].permute(
1, 0, 2).reshape(
-1, value.shape[-1])
for key, value in prior.items()
},
{
key: value[np.arange(batch_indices.shape[1]),
batch_indices].permute(
1, 0, 2).reshape(
-1, value.shape[-1])
for key, value in post.items()
},
prior_dist,
post_dist,
pred_discount_dist,
obs,
rewards,
terminals,
**world_model_loss_kwargs,
)
batch_start = np.random.randint(
0,
low_level_actions.shape[1] - batch_len,
size=(low_level_actions.shape[0]),
)
batch_indices = np.linspace(
batch_start,
batch_start + batch_len,
batch_len,
endpoint=False,
).astype(int)
primitive_loss = criterion(
action_preds[np.arange(batch_indices.shape[1]),
batch_indices].permute(
1, 0, 2).reshape(
-1, action_preds.shape[-1]),
low_level_actions[:, 1:]
[np.arange(batch_indices.shape[1]),
batch_indices].permute(1, 0, 2).reshape(
-1, action_preds.shape[-1]),
)
total_primitive_loss += primitive_loss.item()
total_world_model_loss += world_model_loss.item()
total_div_loss += div.item()
total_image_pred_loss += image_pred_loss.item()
total_transition_loss += transition_loss.item()
total_entropy_loss += entropy_loss.item()
total_pred_discount_loss += pred_discount_loss.item()
total_reward_pred_loss += reward_pred_loss.item()
total_loss += world_model_loss.item(
) + primitive_loss.item()
total_test_steps += 1
eval_statistics["test/primitive_loss"] = (
total_primitive_loss / total_test_steps)
eval_statistics["test/world_model_loss"] = (
total_world_model_loss / total_test_steps)
eval_statistics["test/image_pred_loss"] = (
total_image_pred_loss / total_test_steps)
eval_statistics["test/transition_loss"] = (
total_transition_loss / total_test_steps)
eval_statistics["test/entropy_loss"] = (total_entropy_loss /
total_test_steps)
eval_statistics["test/pred_discount_loss"] = (
total_pred_discount_loss / total_test_steps)
eval_statistics["test/reward_pred_loss"] = (
total_reward_pred_loss / total_test_steps)
if (total_loss / total_test_steps) <= best_test_loss:
best_test_loss = total_loss / total_test_steps
os.makedirs(logdir + "/models/", exist_ok=True)
best_wm_state_dict = world_model.state_dict().copy()
torch.save(
best_wm_state_dict,
logdir + "/models/world_model.pt",
)
if i % variant["plotting_period"] == 0:
print("Best test loss", best_test_loss)
world_model.load_state_dict(best_wm_state_dict)
visualize_wm(
env,
world_model,
train_dataset.outputs,
train_dataset.inputs[1],
test_dataset.outputs,
test_dataset.inputs[1],
logdir,
max_path_length,
low_level_primitives,
num_low_level_actions_per_primitive,
primitive_model=primitive_model,
)
world_model.load_state_dict(latest_state_dict)
logger.record_dict(eval_statistics, prefix="")
logger.dump_tabular(with_prefix=False, with_timestamp=False)
elif clone_primitives_separately:
world_model.load_state_dict(torch.load(variant["world_model_path"]))
criterion = nn.MSELoss()
primitives = []
for p in range(env.num_primitives):
arguments_size = train_datasets[p].inputs[0].shape[-1]
m = Mlp(
hidden_sizes=variant["mlp_hidden_sizes"],
output_size=low_level_action_dim,
input_size=world_model.feature_size + arguments_size,
hidden_activation=torch.nn.functional.relu,
).to(ptu.device)
if variant.get("primitives_path", None):
m.load_state_dict(
torch.load(variant["primitives_path"] +
"primitive_model_{}.pt".format(p)))
primitives.append(m)
optimizers = [
optim.Adam(p.parameters(), **optimizer_kwargs) for p in primitives
]
for i in tqdm(range(num_epochs)):
if i % variant["plotting_period"] == 0:
visualize_rollout(
env,
None,
None,
world_model,
logdir,
max_path_length,
use_env=True,
forcing="none",
tag="none",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
primitive_model=primitives,
use_separate_primitives=True,
)
visualize_rollout(
env,
None,
None,
world_model,
logdir,
max_path_length,
use_env=True,
forcing="teacher",
tag="none",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
primitive_model=primitives,
use_separate_primitives=True,
)
visualize_rollout(
env,
None,
None,
world_model,
logdir,
max_path_length,
use_env=True,
forcing="self",
tag="none",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
primitive_model=primitives,
use_separate_primitives=True,
)
eval_statistics = OrderedDict()
print("Epoch: ", i)
for p, (
train_dataloader,
test_dataloader,
primitive_model,
optimizer,
) in enumerate(
zip(train_dataloaders, test_dataloaders, primitives,
optimizers)):
total_loss = 0
total_train_steps = 0
for data in train_dataloader:
with torch.cuda.amp.autocast():
(arguments, obs), actions = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
arguments = arguments.to(ptu.device).float()
action_preds = world_model(
obs,
(arguments, actions),
primitive_model,
use_network_action=False,
)[-1]
loss = criterion(action_preds, actions)
total_loss += loss.item()
total_train_steps += 1
update_network(primitive_model, optimizer, loss,
gradient_clip, scaler)
scaler.update()
eval_statistics["train/primitive_loss {}".format(p)] = (
total_loss / total_train_steps)
best_test_loss = np.inf
with torch.no_grad():
total_loss = 0
total_test_steps = 0
for data in test_dataloader:
with torch.cuda.amp.autocast():
(high_level_actions, obs), actions = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
high_level_actions = high_level_actions.to(
ptu.device).float()
action_preds = world_model(
obs,
(high_level_actions, actions),
primitive_model,
use_network_action=False,
)[-1]
loss = criterion(action_preds, actions)
total_loss += loss.item()
total_test_steps += 1
eval_statistics["test/primitive_loss {}".format(p)] = (
total_loss / total_test_steps)
if (total_loss / total_test_steps) <= best_test_loss:
best_test_loss = total_loss / total_test_steps
os.makedirs(logdir + "/models/", exist_ok=True)
torch.save(
primitive_model.state_dict(),
logdir + "/models/primitive_model_{}.pt".format(p),
)
logger.record_dict(eval_statistics, prefix="")
logger.dump_tabular(with_prefix=False, with_timestamp=False)
visualize_rollout(
env,
None,
None,
world_model,
logdir,
max_path_length,
use_env=True,
forcing="none",
tag="none",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
primitive_model=primitives,
use_separate_primitives=True,
)
elif clone_primitives:
world_model.load_state_dict(torch.load(variant["world_model_path"]))
criterion = nn.MSELoss()
primitive_model = Mlp(
hidden_sizes=variant["mlp_hidden_sizes"],
output_size=low_level_action_dim,
input_size=world_model.feature_size +
env.action_space.low.shape[0] + 1,
hidden_activation=torch.nn.functional.relu,
).to(ptu.device)
optimizer = optim.Adam(
primitive_model.parameters(),
**optimizer_kwargs,
)
for i in tqdm(range(num_epochs)):
if i % variant["plotting_period"] == 0:
visualize_rollout(
env,
None,
None,
world_model,
logdir,
max_path_length,
use_env=True,
forcing="none",
tag="none",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive,
primitive_model=primitive_model,
)
visualize_rollout(
env,
train_dataset.outputs,
train_dataset.inputs[1],
world_model,
logdir,
max_path_length,
use_env=False,
forcing="teacher",
tag="train",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive - 1,
)
visualize_rollout(
env,
test_dataset.outputs,
test_dataset.inputs[1],
world_model,
logdir,
max_path_length,
use_env=False,
forcing="teacher",
tag="test",
low_level_primitives=low_level_primitives,
num_low_level_actions_per_primitive=
num_low_level_actions_per_primitive - 1,
)
eval_statistics = OrderedDict()
print("Epoch: ", i)
total_loss = 0
total_train_steps = 0
for data in train_dataloader:
with torch.cuda.amp.autocast():
(high_level_actions, obs), actions = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
high_level_actions = high_level_actions.to(
ptu.device).float()
action_preds = world_model(
obs,
(high_level_actions, actions),
primitive_model,
use_network_action=False,
)[-1]
loss = criterion(action_preds, actions)
total_loss += loss.item()
total_train_steps += 1
update_network(primitive_model, optimizer, loss, gradient_clip,
scaler)
scaler.update()
eval_statistics[
"train/primitive_loss"] = total_loss / total_train_steps
best_test_loss = np.inf
with torch.no_grad():
total_loss = 0
total_test_steps = 0
for data in test_dataloader:
with torch.cuda.amp.autocast():
(high_level_actions, obs), actions = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
high_level_actions = high_level_actions.to(
ptu.device).float()
action_preds = world_model(
obs,
(high_level_actions, actions),
primitive_model,
use_network_action=False,
)[-1]
loss = criterion(action_preds, actions)
total_loss += loss.item()
total_test_steps += 1
eval_statistics[
"test/primitive_loss"] = total_loss / total_test_steps
if (total_loss / total_test_steps) <= best_test_loss:
best_test_loss = total_loss / total_test_steps
os.makedirs(logdir + "/models/", exist_ok=True)
torch.save(
primitive_model.state_dict(),
logdir + "/models/primitive_model.pt",
)
logger.record_dict(eval_statistics, prefix="")
logger.dump_tabular(with_prefix=False, with_timestamp=False)
else:
world_model = WorldModel(**world_model_kwargs).to(ptu.device)
optimizer = optim.Adam(
world_model.parameters(),
**optimizer_kwargs,
)
for i in tqdm(range(num_epochs)):
if i % variant["plotting_period"] == 0:
visualize_wm(
env,
world_model,
train_dataset.inputs,
train_dataset.outputs,
test_dataset.inputs,
test_dataset.outputs,
logdir,
max_path_length,
low_level_primitives,
num_low_level_actions_per_primitive,
)
eval_statistics = OrderedDict()
print("Epoch: ", i)
total_wm_loss = 0
total_div_loss = 0
total_image_pred_loss = 0
total_transition_loss = 0
total_entropy_loss = 0
total_train_steps = 0
for data in train_dataloader:
with torch.cuda.amp.autocast():
actions, obs = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
post, prior, post_dist, prior_dist, image_dist = world_model(
obs, actions)[:5]
obs = world_model.flatten_obs(obs.permute(
1, 0, 2), (int(np.prod(image_shape)), ))
(
world_model_loss,
div,
image_pred_loss,
transition_loss,
entropy_loss,
) = compute_world_model_loss(
world_model,
image_shape,
image_dist,
prior,
post,
prior_dist,
post_dist,
obs,
**world_model_loss_kwargs,
)
total_wm_loss += world_model_loss.item()
total_div_loss += div.item()
total_image_pred_loss += image_pred_loss.item()
total_transition_loss += transition_loss.item()
total_entropy_loss += entropy_loss.item()
total_train_steps += 1
update_network(world_model, optimizer, world_model_loss,
gradient_clip, scaler)
scaler.update()
eval_statistics[
"train/wm_loss"] = total_wm_loss / total_train_steps
eval_statistics[
"train/div_loss"] = total_div_loss / total_train_steps
eval_statistics["train/image_pred_loss"] = (total_image_pred_loss /
total_train_steps)
eval_statistics["train/transition_loss"] = (total_transition_loss /
total_train_steps)
eval_statistics["train/entropy_loss"] = (total_entropy_loss /
total_train_steps)
best_test_loss = np.inf
with torch.no_grad():
total_wm_loss = 0
total_div_loss = 0
total_image_pred_loss = 0
total_transition_loss = 0
total_entropy_loss = 0
total_train_steps = 0
total_test_steps = 0
for data in test_dataloader:
with torch.cuda.amp.autocast():
actions, obs = data
obs = obs.to(ptu.device).float()
actions = actions.to(ptu.device).float()
post, prior, post_dist, prior_dist, image_dist = world_model(
obs, actions)[:5]
obs = world_model.flatten_obs(obs.permute(
1, 0, 2), (int(np.prod(image_shape)), ))
(
world_model_loss,
div,
image_pred_loss,
transition_loss,
entropy_loss,
) = compute_world_model_loss(
world_model,
image_shape,
image_dist,
prior,
post,
prior_dist,
post_dist,
obs,
**world_model_loss_kwargs,
)
total_wm_loss += world_model_loss.item()
total_div_loss += div.item()
total_image_pred_loss += image_pred_loss.item()
total_transition_loss += transition_loss.item()
total_entropy_loss += entropy_loss.item()
total_test_steps += 1
eval_statistics[
"test/wm_loss"] = total_wm_loss / total_test_steps
eval_statistics[
"test/div_loss"] = total_div_loss / total_test_steps
eval_statistics["test/image_pred_loss"] = (
total_image_pred_loss / total_test_steps)
eval_statistics["test/transition_loss"] = (
total_transition_loss / total_test_steps)
eval_statistics["test/entropy_loss"] = (total_entropy_loss /
total_test_steps)
if (total_wm_loss / total_test_steps) <= best_test_loss:
best_test_loss = total_wm_loss / total_test_steps
os.makedirs(logdir + "/models/", exist_ok=True)
torch.save(
world_model.state_dict(),
logdir + "/models/world_model.pt",
)
logger.record_dict(eval_statistics, prefix="")
logger.dump_tabular(with_prefix=False, with_timestamp=False)
world_model.load_state_dict(
torch.load(logdir + "/models/world_model.pt"))
visualize_wm(
env,
world_model,
train_dataset,
test_dataset,
logdir,
max_path_length,
low_level_primitives,
num_low_level_actions_per_primitive,
)
def _log_vae_stats(self):
logger.record_dict(
self.vae_trainer.get_diagnostics(),
prefix='vae_trainer/',
)
def _log_stats(self, epoch):
logger.log("Epoch {} finished".format(epoch), with_timestamp=True)
"""
dump video of policy
"""
if epoch % self.dump_video_interval == 0:
imsize = self.expl_env.imsize
env = self.eval_env
dump_path = logger.get_snapshot_dir()
rollout_func = rollout
video_name = "{}_sample_goal.gif".format(epoch)
latent_distance_name = "{}_latent_sample_goal.png".format(epoch)
dump_video(env,
self.eval_data_collector._policy,
osp.join(dump_path, video_name),
rollout_function=rollout_func,
imsize=imsize,
horizon=self.max_path_length,
rows=1,
columns=8)
plot_latent_dist(env,
self.eval_data_collector._policy,
save_name=osp.join(dump_path,
latent_distance_name),
rollout_function=rollout_func,
horizon=self.max_path_length)
old_goal_sampling_mode, old_decode_goals = env._goal_sampling_mode, env.decode_goals
env._goal_sampling_mode = 'reset_of_env'
env.decode_goals = False
video_name = "{}_reset.gif".format(epoch)
latent_distance_name = "{}_latent_reset.png".format(epoch)
dump_video(env,
self.eval_data_collector._policy,
osp.join(dump_path, video_name),
rollout_function=rollout_func,
imsize=imsize,
horizon=self.max_path_length,
rows=1,
columns=8)
plot_latent_dist(env,
self.eval_data_collector._policy,
save_name=osp.join(dump_path,
latent_distance_name),
rollout_function=rollout_func,
horizon=self.max_path_length)
self.eval_env._goal_sampling_mode = old_goal_sampling_mode
self.eval_env.decode_goals = old_decode_goals
"""
Replay Buffer
"""
logger.record_dict(self.replay_buffer.get_diagnostics(),
prefix='replay_buffer/')
"""
Trainer
"""
logger.record_dict(self.trainer.get_diagnostics(), prefix='trainer/')
"""
Exploration
"""
logger.record_dict(self.expl_data_collector.get_diagnostics(),
prefix='exploration/')
expl_paths = self.expl_data_collector.get_epoch_paths()
if hasattr(self.expl_env, 'get_diagnostics'):
logger.record_dict(
self.expl_env.get_diagnostics(expl_paths),
prefix='exploration/',
)
logger.record_dict(
eval_util.get_generic_path_information(expl_paths),
prefix="exploration/",
)
"""
Evaluation
"""
logger.record_dict(
self.eval_data_collector.get_diagnostics(),
prefix='evaluation/',
)
eval_paths = self.eval_data_collector.get_epoch_paths()
if hasattr(self.eval_env, 'get_diagnostics'):
logger.record_dict(
self.eval_env.get_diagnostics(eval_paths),
prefix='evaluation/',
)
logger.record_dict(
eval_util.get_generic_path_information(eval_paths),
prefix="evaluation/",
)
"""
Misc
"""
gt.stamp('logging')
logger.record_dict(_get_epoch_timings())
logger.record_tabular('Epoch', epoch)
logger.dump_tabular(with_prefix=False, with_timestamp=False)
