def main(_):
if FLAGS.eager:
tf.config.experimental_run_functions_eagerly(FLAGS.eager)
tf.random.set_seed(FLAGS.seed)
# np.random.seed(FLAGS.seed)
# random.seed(FLAGS.seed)
print('Env name: %s'%FLAGS.env_name)
if 'procgen' in FLAGS.env_name:
_, env_name, train_levels, _ = FLAGS.env_name.split('-')
env = procgen_wrappers.TFAgentsParallelProcGenEnv(
1,
normalize_rewards=True,
env_name=env_name,
num_levels=int(train_levels),
start_level=0)
state_env = None
timestep_spec = trajectories.time_step_spec(
observation_spec=specs.ArraySpec(env._observation_spec.shape, np.uint8), # pylint: disable=protected-access
reward_spec=specs.ArraySpec(shape=(), dtype=np.float32))
data_spec = trajectory.from_transition(
timestep_spec,
policy_step.PolicyStep(
action=env._action_spec, # pylint: disable=protected-access
info=specs.ArraySpec(shape=(), dtype=np.int32)), timestep_spec)
n_state = None
# ckpt_steps = [10_000_000,15_000_000,20_000_000,25_000_000]
ckpt_steps = [25_000_000]
elif FLAGS.env_name.startswith('pixels-dm'):
if 'distractor' in FLAGS.env_name:
_, _, domain_name, _, _ = FLAGS.env_name.split('-')
else:
_, _, domain_name, _ = FLAGS.env_name.split('-')
if domain_name in ['cartpole']:
FLAGS.set_default('action_repeat', 8)
elif domain_name in ['reacher', 'cheetah', 'ball_in_cup', 'hopper']:
FLAGS.set_default('action_repeat', 4)
elif domain_name in ['finger', 'walker']:
FLAGS.set_default('action_repeat', 2)
env, state_env = utils.load_env(FLAGS.env_name, FLAGS.seed,
FLAGS.action_repeat, FLAGS.frame_stack,
FLAGS.obs_type)
if FLAGS.obs_type == 'pixels':
data_spec = trajectory.from_transition(
env.time_step_spec(), policy_step.PolicyStep(env.action_spec()),
env.time_step_spec())
ckpt_steps = FLAGS.ckpt_timesteps[0]
else:
data_spec = trajectory.from_transition(
state_env.time_step_spec(),
policy_step.PolicyStep(state_env.action_spec()),
state_env.time_step_spec())
n_state = state_env.observation_spec().shape[0]
ckpt_steps = FLAGS.ckpt_timesteps[0]
if FLAGS.numpy_dataset:
tf.io.gfile.makedirs(os.path.join(FLAGS.save_dir, 'datasets'))
def shard_fn(shard):
return os.path.join(
FLAGS.save_dir, 'datasets', FLAGS.env_name + '__%d__%d__%d.npy' %
(int(ckpt_steps[-1]), FLAGS.max_timesteps, shard))
observer = tf_utils.NumpyObserver(shard_fn, env)
observer.allocate_arrays(FLAGS.max_timesteps)
else:
shard_fn = os.path.join(
FLAGS.save_dir, 'datasets',
FLAGS.env_name + '__%d__%d.tfrecord.shard-%d-of-%d' %
(int(ckpt_steps[-1]), FLAGS.max_timesteps, FLAGS.worker_id,
FLAGS.total_workers))
observer = DummyObserver(
shard_fn, data_spec, py_mode=True, compress_image=True)
def load_model(checkpoint):
checkpoint = int(checkpoint)
print(checkpoint)
if FLAGS.env_name.startswith('procgen'):
env_id = [i for i, name in enumerate(
PROCGEN_ENVS) if name == env_name][0]+1
if checkpoint == 10_000_000:
ckpt_iter = '0000020480'
elif checkpoint == 15_000_000:
ckpt_iter = '0000030720'
elif checkpoint == 20_000_000:
ckpt_iter = '0000040960'
elif checkpoint == 25_000_000:
ckpt_iter = '0000051200'
policy_weights_dir = ('ppo_darts/'
'2021-06-22-16-36-54/%d/policies/checkpoints/'
'policy_checkpoint_%s/' % (env_id, ckpt_iter))
policy_def_dir = ('ppo_darts/'
'2021-06-22-16-36-54/%d/policies/policy/' % (env_id))
model = py_tf_eager_policy.SavedModelPyTFEagerPolicy(
policy_def_dir,
time_step_spec=env._time_step_spec, # pylint: disable=protected-access
action_spec=env._action_spec, # pylint: disable=protected-access
policy_state_spec=env._observation_spec, # pylint: disable=protected-access
info_spec=tf.TensorSpec(shape=(None,)),
load_specs_from_pbtxt=False)
model.update_from_checkpoint(policy_weights_dir)
model.actor = model.action
else:
if 'ddpg' in FLAGS.algo_name:
model = ddpg.DDPG(
env.observation_spec(),
env.action_spec(),
cross_norm='crossnorm' in FLAGS.algo_name)
elif 'crr' in FLAGS.algo_name:
model = awr.AWR(
env.observation_spec(),
env.action_spec(), f='bin_max')
elif 'awr' in FLAGS.algo_name:
model = awr.AWR(
env.observation_spec(),
env.action_spec(), f='exp_mean')
elif 'sac_v1' in FLAGS.algo_name:
model = sac_v1.SAC(
env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
elif 'asac' in FLAGS.algo_name:
model = asac.ASAC(
env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
elif 'sac' in FLAGS.algo_name:
model = sac.SAC(
env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0],
cross_norm='crossnorm' in FLAGS.algo_name,
pcl_actor_update='pc' in FLAGS.algo_name)
elif 'pcl' in FLAGS.algo_name:
model = pcl.PCL(
env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
if 'distractor' in FLAGS.env_name:
ckpt_path = os.path.join(
('experiments/'
'20210622_2023.policy_weights_sac_1M_dmc_distractor_hard_pixel/'),
'results', FLAGS.env_name+'__'+str(checkpoint))
else:
ckpt_path = os.path.join(
('experiments/'
'20210607_2023.policy_weights_dmc_1M_SAC_pixel'), 'results',
FLAGS.env_name + '__' + str(checkpoint))
model.load_weights(ckpt_path)
print('Loaded model weights')
return model
# previous_time = time.time()
timestep = env.reset()
episode_return = 0
episode_timesteps = 0
actions = []
time_steps = []
def get_state_or_pixels(obs, obs_type):
# obs of shape 1 x 84 x 84 x (n_state*frame_stack + 3*frame_stack)
if len(obs.shape) == 4:
obs = obs[0]
if obs_type == 'state':
obs = obs[0, 0, :n_state]
else:
obs_tmp = []
for i in range(FLAGS.frame_stack):
obs_tmp.append(obs[:, :, (i + 1) * (n_state) +
i * 3:((i + 1) * (n_state) + (i + 1) * 3)])
obs = np.concatenate(obs_tmp, axis=-1)
return obs
k_model = 0
model = load_model(ckpt_steps[k_model])
reload_model = False
def linear_scheduling(t): # pylint: disable=unused-variable
return 0.1 - 3.96e-9* t
mixture_freq = FLAGS.max_timesteps // len(ckpt_steps)
for i in tqdm.tqdm(range(FLAGS.max_timesteps)):
if (i % mixture_freq) == 0 and i > 0:
reload_model = True
if np.all(timestep.is_last()):
if FLAGS.env_name.startswith('procgen'):
timestep = trajectories.TimeStep(
timestep.step_type[0], timestep.reward[0], timestep.discount[0],
(timestep.observation[0] * 255).astype(np.uint8))
time_steps.append(
ts.termination(
get_state_or_pixels(timestep.observation()[0], 'state')
if FLAGS.obs_type == 'state' else timestep.observation,
timestep.reward if timestep.reward is not None else 1.0))
# Write the episode into the TF Record
for l in range(len(time_steps) - 1):
t_ = min(l + FLAGS.n_step_returns, len(time_steps) - 1)
n_step_return = 0.
for j in range(l, t_):
if len(time_steps[j].reward.shape) == 1:
r_t = time_steps[j].reward[0]
else:
r_t = time_steps[j].reward
n_step_return += FLAGS.discount**j * r_t
t_ = min(l + 1 + FLAGS.n_step_returns, len(time_steps) - 1)
n_step_return_tp1 = 0.
for j in range(l + 1, t_):
if len(time_steps[j].reward.shape) == 1:
r_t = time_steps[j].reward[0]
else:
r_t = time_steps[j].reward
n_step_return_tp1 += FLAGS.discount**j * r_t
if len(time_steps[l].observation.shape) == 4:
if len(time_steps[l].reward.shape) == 1:
time_steps[l] = trajectories.TimeStep(time_steps[l].step_type[0],
n_step_return,
time_steps[l].discount[0],
time_steps[l].observation[0])
else:
time_steps[l] = trajectories.TimeStep(time_steps[l].step_type,
n_step_return,
time_steps[l].discount,
time_steps[l].observation[0])
if len(time_steps[l + 1].observation.shape) == 4:
if len(time_steps[l + 1].reward.shape) == 1:
time_steps[l + 1] = trajectories.TimeStep(
time_steps[l + 1].step_type[0], n_step_return_tp1,
time_steps[l + 1].discount[0], time_steps[l + 1].observation[0])
else:
time_steps[l + 1] = trajectories.TimeStep(
time_steps[l + 1].step_type, n_step_return_tp1,
time_steps[l + 1].discount, time_steps[l + 1].observation[0])
traj = trajectory.from_transition(time_steps[l], actions[l],
time_steps[l + 1])
if FLAGS.numpy_dataset:
traj = Traj(traj, next_obs=time_steps[l+1].observation)
observer(traj)
else:
observer(traj)
timestep = env.reset()
print(episode_return)
episode_return = 0
episode_timesteps = 0
# previous_time = time.time()
actions = []
time_steps = []
if reload_model:
k_model += 1
model = load_model(ckpt_steps[k_model])
reload_model = False
if FLAGS.env_name.startswith('procgen'):
timestep = trajectories.TimeStep(
timestep.step_type[0], timestep.reward[0], timestep.discount[0],
(timestep.observation[0] * 255).astype(np.uint8))
if episode_timesteps == 0:
time_steps.append(
ts.restart(
get_state_or_pixels(timestep.observation, 'state') if FLAGS
.obs_type == 'state' else (timestep.observation)))
elif not timestep.is_last():
time_steps.append(
ts.transition(
get_state_or_pixels(timestep.observation[0], 'state')
if FLAGS.obs_type == 'state' else (timestep.observation),
timestep.reward if timestep.reward is not None else 0.0,
timestep.discount))
if FLAGS.env_name.startswith('procgen'):
# eps_t = linear_scheduling(i)
eps_t = 0
u = np.random.uniform(0, 1, size=1)
if u > eps_t:
timestep_act = trajectories.TimeStep(
timestep.step_type, timestep.reward, timestep.discount,
timestep.observation.astype(np.float32) / 255.)
action = model.actor(timestep_act)
action = action.action
else:
action = np.random.choice(
env.action_spec().maximum.item() + 1, size=1)[0]
next_timestep = env.step(action)
info_arr = np.array(env._infos[0]['level_seed'], dtype=np.int32) # pylint: disable=protected-access
actions.append(policy_step.PolicyStep(action=action, state=(),
info=info_arr))
else:
action = model.actor(
tf.expand_dims(
get_state_or_pixels(timestep.observation[0], 'pixel')
if FLAGS.obs_type == 'state' else (timestep.observation[0]), 0),
sample=True)
next_timestep = env.step(action)
actions.append(
policy_step.PolicyStep(action=action.numpy()[0], state=(), info=()))
episode_return += next_timestep.reward[0]
episode_timesteps += 1
timestep = next_timestep
if FLAGS.numpy_dataset:
observer.save(n_shards=10)
def main(_):
if FLAGS.eager:
tf.config.experimental_run_functions_eagerly(FLAGS.eager)
tf.random.set_seed(FLAGS.seed)
# np.random.seed(FLAGS.seed)
# random.seed(FLAGS.seed)
if 'procgen' in FLAGS.env_name:
_, env_name, train_levels, _ = FLAGS.env_name.split('-')
env = procgen_wrappers.TFAgentsParallelProcGenEnv(
1,
normalize_rewards=False,
env_name=env_name,
num_levels=int(train_levels),
start_level=0)
elif FLAGS.env_name.startswith('pixels-dm'):
if 'distractor' in FLAGS.env_name:
_, _, domain_name, _, _ = FLAGS.env_name.split('-')
else:
_, _, domain_name, _ = FLAGS.env_name.split('-')
if domain_name in ['cartpole']:
FLAGS.set_default('action_repeat', 8)
elif domain_name in ['reacher', 'cheetah', 'ball_in_cup', 'hopper']:
FLAGS.set_default('action_repeat', 4)
elif domain_name in ['finger', 'walker']:
FLAGS.set_default('action_repeat', 2)
env, _ = utils.load_env(FLAGS.env_name, FLAGS.seed,
FLAGS.action_repeat, FLAGS.frame_stack,
FLAGS.obs_type)
hparam_str = utils.make_hparam_string(FLAGS.xm_parameters,
algo_name=FLAGS.algo_name,
seed=FLAGS.seed,
task_name=FLAGS.env_name,
ckpt_timesteps=FLAGS.ckpt_timesteps)
summary_writer = tf.summary.create_file_writer(
os.path.join(FLAGS.save_dir, 'tb', hparam_str))
if FLAGS.env_name.startswith('procgen'):
# map env string to digit [1,16]
env_id = [
i for i, name in enumerate(PROCGEN_ENVS) if name == env_name
][0] + 1
if FLAGS.ckpt_timesteps == 10_000_000:
ckpt_iter = '0000020480'
elif FLAGS.ckpt_timesteps == 25_000_000:
ckpt_iter = '0000051200'
policy_weights_dir = ('ppo_darts/'
'2021-06-22-16-36-54/%d/policies/checkpoints/'
'policy_checkpoint_%s/' % (env_id, ckpt_iter))
policy_def_dir = ('ppo_darts/'
'2021-06-22-16-36-54/%d/policies/policy/' % (env_id))
model = py_tf_eager_policy.SavedModelPyTFEagerPolicy(
policy_def_dir,
time_step_spec=env._time_step_spec, # pylint: disable=protected-access
action_spec=env._action_spec, # pylint: disable=protected-access
policy_state_spec=env._observation_spec, # pylint: disable=protected-access
info_spec=tf.TensorSpec(shape=(None, )),
load_specs_from_pbtxt=False)
model.update_from_checkpoint(policy_weights_dir)
model = TfAgentsPolicy(model)
else:
if 'ddpg' in FLAGS.algo_name:
model = ddpg.DDPG(env.observation_spec(),
env.action_spec(),
cross_norm='crossnorm' in FLAGS.algo_name)
elif 'crr' in FLAGS.algo_name:
model = awr.AWR(env.observation_spec(),
env.action_spec(),
f='bin_max')
elif 'awr' in FLAGS.algo_name:
model = awr.AWR(env.observation_spec(),
env.action_spec(),
f='exp_mean')
elif 'sac_v1' in FLAGS.algo_name:
model = sac_v1.SAC(env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
elif 'asac' in FLAGS.algo_name:
model = asac.ASAC(env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
elif 'sac' in FLAGS.algo_name:
model = sac.SAC(env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0],
cross_norm='crossnorm' in FLAGS.algo_name,
pcl_actor_update='pc' in FLAGS.algo_name)
elif 'pcl' in FLAGS.algo_name:
model = pcl.PCL(env.observation_spec(),
env.action_spec(),
target_entropy=-env.action_spec().shape[0])
if 'distractor' in FLAGS.env_name:
ckpt_path = os.path.join(
('experiments/20210622_2023.policy_weights_sac'
'_1M_dmc_distractor_hard_pixel/'), 'results',
FLAGS.env_name + '__' + str(FLAGS.ckpt_timesteps))
else:
ckpt_path = os.path.join(
('experiments/20210607_2023.'
'policy_weights_dmc_1M_SAC_pixel'), 'results',
FLAGS.env_name + '__' + str(FLAGS.ckpt_timesteps))
model.load_weights(ckpt_path)
print('Loaded model weights')
with summary_writer.as_default():
env = procgen_wrappers.TFAgentsParallelProcGenEnv(
1,
normalize_rewards=False,
env_name=env_name,
num_levels=0,
start_level=0)
(avg_returns,
avg_len) = evaluation.evaluate(env,
model,
num_episodes=100,
return_distributions=False)
tf.summary.scalar('evaluation/returns-all', avg_returns, step=0)
tf.summary.scalar('evaluation/length-all', avg_len, step=0)
def main(_):
tf.config.experimental_run_functions_eagerly(FLAGS.eager)
print('Num GPUs Available: ', len(tf.config.list_physical_devices('GPU')))
if FLAGS.env_name.startswith('procgen'):
print('Test env: %s' % FLAGS.env_name)
_, env_name, train_levels, _ = FLAGS.env_name.split('-')
print('Train env: %s' % FLAGS.env_name)
env = tf_py_environment.TFPyEnvironment(
procgen_wrappers.TFAgentsParallelProcGenEnv(
1,
normalize_rewards=False, # no normalization for evaluation
env_name=env_name,
num_levels=int(train_levels),
start_level=0))
env_all = tf_py_environment.TFPyEnvironment(
procgen_wrappers.TFAgentsParallelProcGenEnv(
1,
normalize_rewards=False, # no normalization for evaluation
env_name=env_name,
num_levels=0,
start_level=0))
if int(train_levels) == 0:
train_levels = '200'
elif FLAGS.env_name.startswith('pixels-dm'):
if 'distractor' in FLAGS.env_name:
_, _, domain_name, _, _ = FLAGS.env_name.split('-')
else:
_, _, domain_name, _ = FLAGS.env_name.split('-')
if domain_name in ['cartpole']:
FLAGS.set_default('action_repeat', 8)
elif domain_name in ['reacher', 'cheetah', 'ball_in_cup', 'hopper']:
FLAGS.set_default('action_repeat', 4)
elif domain_name in ['finger', 'walker']:
FLAGS.set_default('action_repeat', 2)
env, _ = utils.load_env(FLAGS.env_name, FLAGS.seed,
FLAGS.action_repeat, FLAGS.frame_stack,
FLAGS.obs_type)
if FLAGS.obs_type == 'pixels':
env, _ = utils.load_env(FLAGS.env_name, FLAGS.seed,
FLAGS.action_repeat, FLAGS.frame_stack,
FLAGS.obs_type)
else:
_, env = utils.load_env(FLAGS.env_name, FLAGS.seed,
FLAGS.action_repeat, FLAGS.frame_stack,
FLAGS.obs_type)
if FLAGS.obs_type != 'state':
if FLAGS.env_name.startswith('procgen'):
bcq = bcq_pixel
cql = cql_pixel
fisher_brac = fisher_brac_pixel
deepmdp = deepmdp_pixel
vpn = vpn_pixel
cssc = cssc_pixel
pse = pse_pixel
else:
bcq = bcq_state
cql = cql_state
print('Loading dataset')
# Use load_tfrecord_dataset_sequence to load transitions of size k>=2.
if FLAGS.numpy_dataset:
n_shards = 10
def shard_fn(shard):
return ('experiments/'
'20210617_0105.dataset_dmc_50k,100k,'
'200k_SAC_pixel_numpy/datasets/'
'%s__%d__%d__%d.npy' %
(FLAGS.env_name, FLAGS.ckpt_timesteps, FLAGS.max_timesteps,
shard))
np_observer = tf_utils.NumpyObserver(shard_fn, env)
dataset = np_observer.load(n_shards)
else:
if FLAGS.env_name.startswith('procgen'):
if FLAGS.n_step_returns > 0:
if FLAGS.max_timesteps == 100_000:
dataset_path = ('experiments/'
'20210624_2033.dataset_procgen__ppo_pixel/'
'datasets/%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
elif FLAGS.max_timesteps == 3_000_000:
if int(train_levels) == 1:
print('Using dataset with 1 level')
dataset_path = (
'experiments/'
'20210713_1557.dataset_procgen__ppo_pixel_1_level/'
'datasets/%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
elif int(train_levels) == 200:
print('Using dataset with 200 levels')
# Mixture dataset between 10M,15M,20M and 25M in equal amounts
# dataset_path = 'experiments/
# 20210718_1522.dataset_procgen__ppo_pixel_mixture10,15,20,25M/
# datasets/%s__%d__%d.tfrecord'%(FLAGS.env_name,
# FLAGS.ckpt_timesteps,FLAGS.max_timesteps)
# PPO after 25M steps
dataset_path = (
'experiments/'
'20210702_2234.dataset_procgen__ppo_pixel/'
'datasets/%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
elif FLAGS.max_timesteps == 5_000_000:
# epsilon-greedy, eps: 0.1->0.001
dataset_path = (
'experiments/'
'20210805_1958.dataset_procgen__ppo_pixel_'
'egreedy_levelIDs/datasets/'
'%s__%d__%d.tfrecord*' %
(FLAGS.env_name, FLAGS.ckpt_timesteps, 100000))
# Pure greedy (epsilon=0)
# dataset_path = ('experiments/'
# '20210820_1348.dataset_procgen__ppo_pixel_'
# 'egreedy_levelIDs/datasets/'
# '%s__%d__%d.tfrecord*' %
# (FLAGS.env_name, FLAGS.ckpt_timesteps, 100000))
elif FLAGS.env_name.startswith('pixels-dm'):
if 'distractor' in FLAGS.env_name:
dataset_path = (
'experiments/'
'20210623_1749.dataset_dmc__sac_pixel/datasets/'
'%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
else:
if FLAGS.obs_type == 'pixels':
dataset_path = (
'experiments/'
'20210612_1644.dataset_dmc_50k,100k,200k_SAC_pixel/'
'datasets/%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
else:
dataset_path = (
'experiments/'
'20210621_1436.dataset_dmc__SAC_pixel/datasets/'
'%s__%d__%d.tfrecord' %
(FLAGS.env_name, FLAGS.ckpt_timesteps,
FLAGS.max_timesteps))
shards = tf.io.gfile.glob(dataset_path)
shards = [s for s in shards if not s.endswith('.spec')]
print('Found %d shards under path %s' % (len(shards), dataset_path))
if FLAGS.n_step_returns > 1:
# Load sequences of length N
dataset = load_tfrecord_dataset_sequence(
shards,
buffer_size_per_shard=FLAGS.dataset_size // len(shards),
deterministic=False,
compress_image=True,
seq_len=FLAGS.n_step_returns) # spec=data_spec,
dataset = dataset.take(FLAGS.dataset_size).shuffle(
buffer_size=FLAGS.batch_size,
reshuffle_each_iteration=False).batch(
FLAGS.batch_size,
drop_remainder=True).prefetch(1).repeat()
dataset_iter = iter(dataset)
else:
dataset_iter = tf_utils.create_data_iterator(
('experiments/20210805'
'_1958.dataset_procgen__ppo_pixel_egreedy_'
'levelIDs/datasets/%s__%d__%d.tfrecord.shard-*-of-*' %
(FLAGS.env_name, FLAGS.ckpt_timesteps, 100000)),
FLAGS.batch_size,
shuffle_buffer_size=FLAGS.batch_size,
obs_to_float=False)
tf.random.set_seed(FLAGS.seed)
hparam_str = utils.make_hparam_string(
FLAGS.xm_parameters,
algo_name=FLAGS.algo_name,
seed=FLAGS.seed,
task_name=FLAGS.env_name,
ckpt_timesteps=FLAGS.ckpt_timesteps,
rep_learn_keywords=FLAGS.rep_learn_keywords)
summary_writer = tf.summary.create_file_writer(
os.path.join(FLAGS.save_dir, 'tb', hparam_str))
result_writer = tf.summary.create_file_writer(
os.path.join(FLAGS.save_dir, 'results', hparam_str))
pretrain = (FLAGS.pretrain > 0)
if FLAGS.env_name.startswith('procgen'):
# disable entropy reg for discrete spaces
action_dim = env.action_spec().maximum.item() + 1
else:
action_dim = env.action_spec().shape[0]
if 'cql' in FLAGS.algo_name:
model = cql.CQL(env.observation_spec(),
env.action_spec(),
reg=FLAGS.f_reg,
target_entropy=-action_dim,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size)
elif 'bcq' in FLAGS.algo_name:
model = bcq.BCQ(env.observation_spec(),
env.action_spec(),
num_augmentations=FLAGS.num_data_augs)
elif 'fbrac' in FLAGS.algo_name:
model = fisher_brac.FBRAC(env.observation_spec(),
env.action_spec(),
target_entropy=-action_dim,
f_reg=FLAGS.f_reg,
reward_bonus=FLAGS.reward_bonus,
num_augmentations=FLAGS.num_data_augs,
env_name=FLAGS.env_name,
batch_size=FLAGS.batch_size)
elif 'ours' in FLAGS.algo_name:
model = ours.OURS(env.observation_spec(),
env.action_spec(),
target_entropy=-action_dim,
f_reg=FLAGS.f_reg,
reward_bonus=FLAGS.reward_bonus,
num_augmentations=FLAGS.num_data_augs,
env_name=FLAGS.env_name,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size,
n_quantiles=FLAGS.n_quantiles,
temp=FLAGS.temp,
num_training_levels=train_levels)
bc_pretraining_steps = FLAGS.pretrain
if pretrain:
model_save_path = os.path.join(FLAGS.save_dir, 'weights',
hparam_str)
checkpoint = tf.train.Checkpoint(**model.model_dict)
tf_step_counter = tf.Variable(0, dtype=tf.int32)
manager = tf.train.CheckpointManager(
checkpoint,
directory=model_save_path,
max_to_keep=1,
checkpoint_interval=FLAGS.save_interval,
step_counter=tf_step_counter)
# Load the checkpoint in case it exists
state = manager.restore_or_initialize()
if state is not None:
# loaded variables from checkpoint folder
timesteps_already_done = int(
re.findall('ckpt-([0-9]*)',
state)[0]) #* FLAGS.save_interval
print('Loaded model from timestep %d' % timesteps_already_done)
else:
print('Training from scratch')
timesteps_already_done = 0
tf_step_counter.assign(timesteps_already_done)
print('Pretraining')
for i in tqdm.tqdm(range(bc_pretraining_steps)):
info_dict = model.update_step(dataset_iter,
train_target='encoder')
# (quantile_states, quantile_bins)
if i % FLAGS.log_interval == 0:
with summary_writer.as_default():
for k, v in info_dict.items():
v = tf.reduce_mean(v)
tf.summary.scalar(f'pretrain/{k}', v, step=i)
tf_step_counter.assign(i)
manager.save(checkpoint_number=i)
elif 'bc' in FLAGS.algo_name:
model = bc_pixel.BehavioralCloning(
env.observation_spec(),
env.action_spec(),
mixture=False,
encoder=None,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
env_name=FLAGS.env_name,
batch_size=FLAGS.batch_size)
elif 'deepmdp' in FLAGS.algo_name:
model = deepmdp.DeepMdpLearner(
env.observation_spec(),
env.action_spec(),
embedding_dim=512,
num_distributions=1,
sequence_length=2,
learning_rate=3e-4,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size)
elif 'vpn' in FLAGS.algo_name:
model = vpn.ValuePredictionNetworkLearner(
env.observation_spec(),
env.action_spec(),
embedding_dim=512,
learning_rate=3e-4,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size)
elif 'cssc' in FLAGS.algo_name:
model = cssc.CSSC(env.observation_spec(),
env.action_spec(),
embedding_dim=512,
actor_lr=3e-4,
critic_lr=3e-4,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size)
elif 'pse' in FLAGS.algo_name:
model = pse.PSE(env.observation_spec(),
env.action_spec(),
embedding_dim=512,
actor_lr=3e-4,
critic_lr=3e-4,
num_augmentations=FLAGS.num_data_augs,
rep_learn_keywords=FLAGS.rep_learn_keywords,
batch_size=FLAGS.batch_size,
temperature=FLAGS.temp)
bc_pretraining_steps = FLAGS.pretrain
if pretrain:
print('Pretraining')
for i in tqdm.tqdm(range(bc_pretraining_steps)):
info_dict = model.update_step(dataset_iter,
train_target='encoder')
if i % FLAGS.log_interval == 0:
with summary_writer.as_default():
for k, v in info_dict.items():
v = tf.reduce_mean(v)
tf.summary.scalar(f'pretrain/{k}', v, step=i)
if 'fbrac' in FLAGS.algo_name or FLAGS.algo_name == 'bc':
# Either load the online policy:
if FLAGS.load_bc and FLAGS.env_name.startswith('procgen'):
env_id = [
i for i, name in enumerate(PROCGEN_ENVS) if name == env_name
][0] + 1 # map env string to digit [1,16]
if FLAGS.ckpt_timesteps == 10_000_000:
ckpt_iter = '0000020480'
elif FLAGS.ckpt_timesteps == 25_000_000:
ckpt_iter = '0000051200'
policy_weights_dir = (
'ppo_darts/'
'2021-06-22-16-36-54/%d/policies/checkpoints/'
'policy_checkpoint_%s/' % (env_id, ckpt_iter))
policy_def_dir = ('ppo_darts/'
'2021-06-22-16-36-54/%d/policies/policy/' %
(env_id))
bc = py_tf_eager_policy.SavedModelPyTFEagerPolicy(
policy_def_dir,
time_step_spec=env._time_step_spec, # pylint: disable=protected-access
action_spec=env._action_spec, # pylint: disable=protected-access
policy_state_spec=env._observation_spec, # pylint: disable=protected-access
info_spec=tf.TensorSpec(shape=(None, )),
load_specs_from_pbtxt=False)
bc.update_from_checkpoint(policy_weights_dir)
model.bc.policy = tf_utils.TfAgentsPolicy(bc)
else:
if FLAGS.algo_name == 'fbrac':
bc_pretraining_steps = 100_000
elif FLAGS.algo_name == 'bc':
bc_pretraining_steps = 1_000_000
if 'fbrac' in FLAGS.algo_name:
bc = model.bc
else:
bc = model
for i in tqdm.tqdm(range(bc_pretraining_steps)):
info_dict = bc.update_step(dataset_iter)
if i % FLAGS.log_interval == 0:
with summary_writer.as_default():
for k, v in info_dict.items():
v = tf.reduce_mean(v)
tf.summary.scalar(f'bc/{k}', v, step=i)
if FLAGS.algo_name == 'bc':
if (i + 1) % FLAGS.eval_interval == 0:
average_returns, average_length = evaluation.evaluate(
env, bc) # (FLAGS.env_name.startswith('procgen'))
average_returns_all, average_length_all = evaluation.evaluate(
env_all, bc)
with result_writer.as_default():
tf.summary.scalar('evaluation/returns',
average_returns,
step=i + 1)
tf.summary.scalar('evaluation/length',
average_length,
step=i + 1)
tf.summary.scalar('evaluation/returns-all',
average_returns_all,
step=i + 1)
tf.summary.scalar('evaluation/length-all',
average_length_all,
step=i + 1)
if FLAGS.algo_name == 'bc':
exit()
if not (FLAGS.algo_name == 'ours' and pretrain):
model_save_path = os.path.join(FLAGS.save_dir, 'weights', hparam_str)
checkpoint = tf.train.Checkpoint(**model.model_dict)
tf_step_counter = tf.Variable(0, dtype=tf.int32)
manager = tf.train.CheckpointManager(
checkpoint,
directory=model_save_path,
max_to_keep=1,
checkpoint_interval=FLAGS.save_interval,
step_counter=tf_step_counter)
# Load the checkpoint in case it exists
weights_path = tf.io.gfile.glob(model_save_path + '/ckpt-*.index')
key_fn = lambda x: int(re.findall(r'(\d+)', x)[-1])
weights_path.sort(key=key_fn)
if weights_path:
weights_path = weights_path[-1] # take most recent
state = manager.restore_or_initialize() # restore(weights_path)
if state is not None:
# loaded variables from checkpoint folder
timesteps_already_done = int(
re.findall('ckpt-([0-9]*)', state)[0]) #* FLAGS.save_interval
print('Loaded model from timestep %d' % timesteps_already_done)
else:
print('Training from scratch')
timesteps_already_done = 0
tf_step_counter.assign(timesteps_already_done)
for i in tqdm.tqdm(range(timesteps_already_done, FLAGS.num_updates)):
with summary_writer.as_default():
info_dict = model.update_step(
dataset_iter, train_target='rl' if pretrain else 'both')
if i % FLAGS.log_interval == 0:
with summary_writer.as_default():
for k, v in info_dict.items():
v = tf.reduce_mean(v)
tf.summary.scalar(f'training/{k}', v, step=i)
if (i + 1) % FLAGS.eval_interval == 0:
average_returns, average_length = evaluation.evaluate(env, model)
average_returns_all, average_length_all = evaluation.evaluate(
env_all, model)
with result_writer.as_default():
tf.summary.scalar('evaluation/returns-200',
average_returns,
step=i + 1)
tf.summary.scalar('evaluation/length-200',
average_length,
step=i + 1)
tf.summary.scalar('evaluation/returns-all',
average_returns_all,
step=i + 1)
tf.summary.scalar('evaluation/length-all',
average_length_all,
step=i + 1)
tf_step_counter.assign(i)
manager.save(checkpoint_number=i)