from ray.rllib.agents.dqn.apex import apex_execution_plan
from ray.rllib.agents.ddpg.ddpg import DDPGTrainer, \
DEFAULT_CONFIG as DDPG_CONFIG
APEX_DDPG_DEFAULT_CONFIG = DDPGTrainer.merge_trainer_configs(
DDPG_CONFIG, # see also the options in ddpg.py, which are also supported
{
"optimizer": {
"max_weight_sync_delay": 400,
"num_replay_buffer_shards": 4,
"debug": False
},
"exploration_config": {
"type": "PerWorkerOrnsteinUhlenbeckNoise"
},
"n_step": 3,
"num_gpus": 0,
"num_workers": 32,
"buffer_size": 2000000,
"learning_starts": 50000,
"train_batch_size": 512,
"rollout_fragment_length": 50,
"target_network_update_freq": 500000,
"timesteps_per_iteration": 25000,
"worker_side_prioritization": True,
"min_iter_time_s": 30,
},
)
ApexDDPGTrainer = DDPGTrainer.with_updates(
name="APEX_DDPG",
default_config=APEX_DDPG_DEFAULT_CONFIG,
APEX_DDPG_DEFAULT_CONFIG = DDPGTrainer.merge_trainer_configs(
DDPGConfig().to_dict(
), # see also the options in ddpg.py, which are also supported
{
"optimizer": {
"max_weight_sync_delay": 400,
"num_replay_buffer_shards": 4,
"debug": False,
},
"exploration_config": {
"type": "PerWorkerOrnsteinUhlenbeckNoise"
},
"n_step": 3,
"num_gpus": 0,
"num_workers": 32,
"replay_buffer_config": {
"capacity": 2000000,
"no_local_replay_buffer": True,
# Specify prioritized replay by supplying a buffer type that supports
# prioritization, for example: MultiAgentPrioritizedReplayBuffer.
"prioritized_replay": DEPRECATED_VALUE,
"learning_starts": 50000,
# Whether all shards of the replay buffer must be co-located
# with the learner process (running the execution plan).
# This is preferred b/c the learner process should have quick
# access to the data from the buffer shards, avoiding network
# traffic each time samples from the buffer(s) are drawn.
# Set this to False for relaxing this constraint and allowing
# replay shards to be created on node(s) other than the one
# on which the learner is located.
"replay_buffer_shards_colocated_with_driver": True,
"worker_side_prioritization": True,
},
"train_batch_size": 512,
"rollout_fragment_length": 50,
# Update the target network every `target_network_update_freq` sample timesteps.
"target_network_update_freq": 500000,
"min_sample_timesteps_per_reporting": 25000,
"min_time_s_per_reporting": 30,
},
_allow_unknown_configs=True,
)
TD3_DEFAULT_CONFIG = DDPGTrainer.merge_trainer_configs(
DDPG_CONFIG,
{
# largest changes: twin Q functions, delayed policy updates, and target
# smoothing
"twin_q": True,
"policy_delay": 2,
"smooth_target_policy": True,
"target_noise": 0.2,
"target_noise_clip": 0.5,
"exploration_config": {
# TD3 uses simple Gaussian noise on top of deterministic NN-output
# actions (after a possible pure random phase of n timesteps).
"type": "GaussianNoise",
# For how many timesteps should we return completely random
# actions, before we start adding (scaled) noise?
"random_timesteps": 10000,
# Gaussian stddev of action noise for exploration.
"stddev": 0.1,
# Scaling settings by which the Gaussian noise is scaled before
# being added to the actions. NOTE: The scale timesteps start only
# after(!) any random steps have been finished.
# By default, do not anneal over time (fixed 1.0).
"initial_scale": 1.0,
"final_scale": 1.0,
"scale_timesteps": 1
},
# other changes & things we want to keep fixed:
# larger actor learning rate, no l2 regularisation, no Huber loss, etc.
"learning_starts": 10000,
"actor_hiddens": [400, 300],
"critic_hiddens": [400, 300],
"n_step": 1,
"gamma": 0.99,
"actor_lr": 1e-3,
"critic_lr": 1e-3,
"l2_reg": 0.0,
"tau": 5e-3,
"train_batch_size": 100,
"use_huber": False,
"target_network_update_freq": 0,
"num_workers": 0,
"num_gpus_per_worker": 0,
"worker_side_prioritization": False,
"buffer_size": 1000000,
"prioritized_replay": False,
"clip_rewards": False,
"use_state_preprocessor": False,
})
APEX_DDPG_DEFAULT_CONFIG = DDPGTrainer.merge_trainer_configs(
DDPG_CONFIG, # see also the options in ddpg.py, which are also supported
{
"optimizer": {
"max_weight_sync_delay": 400,
"num_replay_buffer_shards": 4,
"debug": False
},
"exploration_config": {
"type": "PerWorkerOrnsteinUhlenbeckNoise"
},
"n_step": 3,
"num_gpus": 0,
"num_workers": 32,
"buffer_size": 2000000,
# TODO(jungong) : update once Apex supports replay_buffer_config.
"replay_buffer_config": None,
# Whether all shards of the replay buffer must be co-located
# with the learner process (running the execution plan).
# This is preferred b/c the learner process should have quick
# access to the data from the buffer shards, avoiding network
# traffic each time samples from the buffer(s) are drawn.
# Set this to False for relaxing this constraint and allowing
# replay shards to be created on node(s) other than the one
# on which the learner is located.
"replay_buffer_shards_colocated_with_driver": True,
"learning_starts": 50000,
"train_batch_size": 512,
"rollout_fragment_length": 50,
"target_network_update_freq": 500000,
"timesteps_per_iteration": 25000,
"worker_side_prioritization": True,
"min_iter_time_s": 30,
},
_allow_unknown_configs=True,
)