def main(_):
seed = common.set_random_seed(FLAGS.random_seed)
gin_file = common.get_gin_file()
gin.parse_config_files_and_bindings(gin_file, FLAGS.gin_param)
algorithm_ctor = gin.query_parameter(
'TrainerConfig.algorithm_ctor').scoped_configurable_fn
env = create_environment(nonparallel=True, seed=seed)
env.reset()
common.set_global_env(env)
config = policy_trainer.TrainerConfig(root_dir="")
data_transformer = create_data_transformer(config.data_transformer_ctor,
env.observation_spec())
config.data_transformer = data_transformer
observation_spec = data_transformer.transformed_observation_spec
common.set_transformed_observation_spec(observation_spec)
algorithm = algorithm_ctor(
observation_spec=observation_spec,
action_spec=env.action_spec(),
config=config)
try:
policy_trainer.play(
FLAGS.root_dir,
env,
algorithm,
checkpoint_step=FLAGS.checkpoint_step or "latest",
epsilon_greedy=FLAGS.epsilon_greedy,
num_episodes=FLAGS.num_episodes,
max_episode_length=FLAGS.max_episode_length,
sleep_time_per_step=FLAGS.sleep_time_per_step,
record_file=FLAGS.record_file,
ignored_parameter_prefixes=FLAGS.ignored_parameter_prefixes.split(
",") if FLAGS.ignored_parameter_prefixes else [])
finally:
env.close()
def __init__(self, config: TrainerConfig):
"""
Args:
config (TrainerConfig): configuration used to construct this trainer
"""
Trainer._trainer_progress = _TrainerProgress()
root_dir = os.path.expanduser(config.root_dir)
os.makedirs(root_dir, exist_ok=True)
logging.get_absl_handler().use_absl_log_file(log_dir=root_dir)
self._root_dir = root_dir
self._train_dir = os.path.join(root_dir, 'train')
self._eval_dir = os.path.join(root_dir, 'eval')
self._algorithm_ctor = config.algorithm_ctor
self._algorithm = None
self._num_checkpoints = config.num_checkpoints
self._checkpointer = None
self._evaluate = config.evaluate
self._eval_interval = config.eval_interval
self._summary_interval = config.summary_interval
self._summaries_flush_secs = config.summaries_flush_secs
self._summary_max_queue = config.summary_max_queue
self._debug_summaries = config.debug_summaries
self._summarize_grads_and_vars = config.summarize_grads_and_vars
self._config = config
self._random_seed = common.set_random_seed(config.random_seed)
def initialize(self):
"""Initializes the Trainer."""
self._random_seed = common.set_random_seed(self._random_seed,
not self._use_tf_functions)
tf.config.experimental_run_functions_eagerly(
not self._use_tf_functions)
env = self._create_environment(random_seed=self._random_seed)
common.set_global_env(env)
self._algorithm = self._algorithm_ctor(
observation_spec=env.observation_spec(),
action_spec=env.action_spec(),
debug_summaries=self._debug_summaries)
self._algorithm.set_summary_settings(
summarize_grads_and_vars=self._summarize_grads_and_vars,
summarize_action_distributions=self._config.
summarize_action_distributions)
self._algorithm.use_rollout_state = self._config.use_rollout_state
self._driver = self._init_driver()
# Create an unwrapped env to expose subprocess gin confs which otherwise
# will be marked as "inoperative". This env should be created last.
# DO NOT register this env in self._envs because AsyncOffPolicyTrainer
# will use all self._envs to init AsyncOffPolicyDriver!
self._unwrapped_env = self._create_environment(
nonparallel=True, random_seed=self._random_seed, register=False)
if self._evaluate:
self._eval_env = self._unwrapped_env
def main(_):
seed = common.set_random_seed(FLAGS.random_seed,
not FLAGS.use_tf_functions)
gin_file = common.get_gin_file()
gin.parse_config_files_and_bindings(gin_file, FLAGS.gin_param)
algorithm_ctor = gin.query_parameter(
'TrainerConfig.algorithm_ctor').scoped_configurable_fn
env = create_environment(nonparallel=True, seed=seed)
env.reset()
common.set_global_env(env)
algorithm = algorithm_ctor(observation_spec=env.observation_spec(),
action_spec=env.action_spec())
policy_trainer.play(FLAGS.root_dir,
env,
algorithm,
checkpoint_name=FLAGS.checkpoint_name,
epsilon_greedy=FLAGS.epsilon_greedy,
num_episodes=FLAGS.num_episodes,
sleep_time_per_step=FLAGS.sleep_time_per_step,
record_file=FLAGS.record_file,
use_tf_functions=FLAGS.use_tf_functions)
env.pyenv.close()
def setUp(self):
common.set_random_seed(1)
alf.summary.reset_global_counter()
