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from easydict import EasyDict
# options={'PongNoFrameskip-v4', 'QbertNoFrameskip-v4', 'MsPacmanNoFrameskip-v4', 'SpaceInvadersNoFrameskip-v4', 'BreakoutNoFrameskip-v4', ...}
env_name = 'PongNoFrameskip-v4'
if env_name == 'PongNoFrameskip-v4':
action_space_size = 6
elif env_name == 'QbertNoFrameskip-v4':
action_space_size = 6
elif env_name == 'MsPacmanNoFrameskip-v4':
action_space_size = 9
elif env_name == 'SpaceInvadersNoFrameskip-v4':
action_space_size = 6
elif env_name == 'BreakoutNoFrameskip-v4':
action_space_size = 4
# ==============================================================
# begin of the most frequently changed config specified by the user
# ==============================================================
gpu_num = 2
collector_env_num = 8
n_episode = int(8*gpu_num)
evaluator_env_num = 3
num_simulations = 50
update_per_collect = 1000
batch_size = 256
max_env_step = int(1e6)
reanalyze_ratio = 0.
eps_greedy_exploration_in_collect = False
# ==============================================================
# end of the most frequently changed config specified by the user
# ==============================================================
atari_muzero_config = dict(
exp_name=
f'data_mz_ctree/{env_name[:-14]}_muzero_ns{num_simulations}_upc{update_per_collect}_rr{reanalyze_ratio}_ddp_{gpu_num}gpu_seed0',
env=dict(
stop_value=int(1e6),
env_name=env_name,
obs_shape=(4, 96, 96),
collector_env_num=collector_env_num,
evaluator_env_num=evaluator_env_num,
n_evaluator_episode=evaluator_env_num,
manager=dict(shared_memory=False, ),
),
policy=dict(
model=dict(
observation_shape=(4, 96, 96),
frame_stack_num=4,
action_space_size=action_space_size,
downsample=True,
self_supervised_learning_loss=True, # default is False
discrete_action_encoding_type='one_hot',
norm_type='BN',
),
cuda=True,
multi_gpu=True,
env_type='not_board_games',
game_segment_length=400,
random_collect_episode_num=0,
eps=dict(
eps_greedy_exploration_in_collect=eps_greedy_exploration_in_collect,
# need to dynamically adjust the number of decay steps
# according to the characteristics of the environment and the algorithm
type='linear',
start=1.,
end=0.05,
decay=int(1e5),
),
use_augmentation=True,
update_per_collect=update_per_collect,
batch_size=batch_size,
optim_type='SGD',
lr_piecewise_constant_decay=True,
learning_rate=0.2,
num_simulations=num_simulations,
reanalyze_ratio=reanalyze_ratio,
ssl_loss_weight=2, # default is 0
n_episode=n_episode,
eval_freq=int(2e3),
replay_buffer_size=int(1e6), # the size/capacity of replay_buffer, in the terms of transitions.
collector_env_num=collector_env_num,
evaluator_env_num=evaluator_env_num,
),
)
atari_muzero_config = EasyDict(atari_muzero_config)
main_config = atari_muzero_config
atari_muzero_create_config = dict(
env=dict(
type='atari_lightzero',
import_names=['zoo.atari.envs.atari_lightzero_env'],
),
env_manager=dict(type='subprocess'),
policy=dict(
type='muzero',
import_names=['lzero.policy.muzero'],
),
collector=dict(
type='episode_muzero',
import_names=['lzero.worker.muzero_collector'],
)
)
atari_muzero_create_config = EasyDict(atari_muzero_create_config)
create_config = atari_muzero_create_config
if __name__ == "__main__":
"""
Overview:
This script should be executed with <nproc_per_node> GPUs.
Run the following command to launch the script:
python -m torch.distributed.launch --nproc_per_node=2 ./LightZero/zoo/atari/config/atari_muzero_multigpu_ddp_config.py
"""
from ding.utils import DDPContext
from lzero.entry import train_muzero
from lzero.config.utils import lz_to_ddp_config
with DDPContext():
main_config = lz_to_ddp_config(main_config)
train_muzero([main_config, create_config], seed=0, max_env_step=max_env_step)
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