5fe9aea798
Addresses part of #1015 ### Dependencies - move jsonargparse and docstring-parser to dependencies to run hl examples without dev - create mujoco-py extra for legacy mujoco envs - updated atari extra - removed atari-py and gym dependencies - added ALE-py, autorom, and shimmy - created robotics extra for HER-DDPG ### Mac specific - only install envpool when not on mac - mujoco-py not working on macOS newer than Monterey (https://github.com/openai/mujoco-py/issues/777) - D4RL also fails due to dependency on mujoco-py (https://github.com/Farama-Foundation/D4RL/issues/232) ### Other - reduced training-num/test-num in example files to a number ≤ 20 (examples with 100 led to too many open files) - rendering for Mujoco envs needs to be fixed on gymnasium side (https://github.com/Farama-Foundation/Gymnasium/issues/749) --------- Co-authored-by: Maximilian Huettenrauch <m.huettenrauch@appliedai.de> Co-authored-by: Michael Panchenko <35432522+MischaPanch@users.noreply.github.com>
227 lines
8.1 KiB
Python
227 lines
8.1 KiB
Python
import argparse
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import datetime
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import os
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import pprint
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import sys
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import numpy as np
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import torch
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from env import make_vizdoom_env
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from network import C51
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from examples.common import logger_factory
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from tianshou.data import Collector, VectorReplayBuffer
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from tianshou.policy import C51Policy
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from tianshou.policy.base import BasePolicy
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from tianshou.trainer import OffpolicyTrainer
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def get_args() -> argparse.Namespace:
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parser = argparse.ArgumentParser()
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parser.add_argument("--task", type=str, default="D1_basic")
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parser.add_argument("--seed", type=int, default=0)
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parser.add_argument("--eps-test", type=float, default=0.005)
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parser.add_argument("--eps-train", type=float, default=1.0)
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parser.add_argument("--eps-train-final", type=float, default=0.05)
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parser.add_argument("--buffer-size", type=int, default=2000000)
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parser.add_argument("--lr", type=float, default=0.0001)
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parser.add_argument("--gamma", type=float, default=0.99)
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parser.add_argument("--num-atoms", type=int, default=51)
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parser.add_argument("--v-min", type=float, default=-10.0)
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parser.add_argument("--v-max", type=float, default=10.0)
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parser.add_argument("--n-step", type=int, default=3)
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parser.add_argument("--target-update-freq", type=int, default=500)
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parser.add_argument("--epoch", type=int, default=300)
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parser.add_argument("--step-per-epoch", type=int, default=100000)
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parser.add_argument("--step-per-collect", type=int, default=10)
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parser.add_argument("--update-per-step", type=float, default=0.1)
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parser.add_argument("--batch-size", type=int, default=64)
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parser.add_argument("--training-num", type=int, default=10)
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parser.add_argument("--test-num", type=int, default=10)
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parser.add_argument("--logdir", type=str, default="log")
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parser.add_argument("--render", type=float, default=0.0)
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parser.add_argument(
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"--device",
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type=str,
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default="cuda" if torch.cuda.is_available() else "cpu",
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)
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parser.add_argument("--frames-stack", type=int, default=4)
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parser.add_argument("--skip-num", type=int, default=4)
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parser.add_argument("--resume-path", type=str, default=None)
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parser.add_argument("--resume-id", type=str, default=None)
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parser.add_argument(
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"--logger",
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type=str,
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default="tensorboard",
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choices=["tensorboard", "wandb"],
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)
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parser.add_argument("--wandb-project", type=str, default="vizdoom.benchmark")
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parser.add_argument(
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"--watch",
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default=False,
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action="store_true",
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help="watch the play of pre-trained policy only",
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)
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parser.add_argument(
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"--save-lmp",
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default=False,
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action="store_true",
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help="save lmp file for replay whole episode",
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)
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parser.add_argument("--save-buffer-name", type=str, default=None)
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return parser.parse_args()
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def test_c51(args: argparse.Namespace = get_args()) -> None:
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# make environments
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env, train_envs, test_envs = make_vizdoom_env(
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args.task,
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args.skip_num,
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(args.frames_stack, 84, 84),
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args.save_lmp,
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args.seed,
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args.training_num,
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args.test_num,
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)
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args.state_shape = env.observation_space.shape
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args.action_shape = env.action_space.shape or env.action_space.n
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# should be N_FRAMES x H x W
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print("Observations shape:", args.state_shape)
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print("Actions shape:", args.action_shape)
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# seed
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np.random.seed(args.seed)
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torch.manual_seed(args.seed)
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# define model
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net = C51(*args.state_shape, args.action_shape, args.num_atoms, args.device)
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optim = torch.optim.Adam(net.parameters(), lr=args.lr)
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# define policy
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policy: C51Policy = C51Policy(
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model=net,
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optim=optim,
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discount_factor=args.gamma,
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action_space=env.action_space,
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num_atoms=args.num_atoms,
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v_min=args.v_min,
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v_max=args.v_max,
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estimation_step=args.n_step,
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target_update_freq=args.target_update_freq,
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).to(args.device)
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# load a previous policy
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if args.resume_path:
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policy.load_state_dict(torch.load(args.resume_path, map_location=args.device))
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print("Loaded agent from: ", args.resume_path)
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# replay buffer: `save_last_obs` and `stack_num` can be removed together
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# when you have enough RAM
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buffer = VectorReplayBuffer(
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args.buffer_size,
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buffer_num=len(train_envs),
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ignore_obs_next=True,
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save_only_last_obs=True,
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stack_num=args.frames_stack,
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)
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# collector
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train_collector = Collector(policy, train_envs, buffer, exploration_noise=True)
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test_collector = Collector(policy, test_envs, exploration_noise=True)
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# log
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now = datetime.datetime.now().strftime("%y%m%d-%H%M%S")
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args.algo_name = "c51"
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log_name = os.path.join(args.task, args.algo_name, str(args.seed), now)
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log_path = os.path.join(args.logdir, log_name)
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# logger
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if args.logger == "wandb":
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logger_factory.logger_type = "wandb"
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logger_factory.wandb_project = args.wandb_project
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else:
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logger_factory.logger_type = "tensorboard"
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logger = logger_factory.create_logger(
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log_dir=log_path,
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experiment_name=log_name,
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run_id=args.resume_id,
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config_dict=vars(args),
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)
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def save_best_fn(policy: BasePolicy) -> None:
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torch.save(policy.state_dict(), os.path.join(log_path, "policy.pth"))
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def stop_fn(mean_rewards: float) -> bool:
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if env.spec.reward_threshold:
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return mean_rewards >= env.spec.reward_threshold
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return False
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def train_fn(epoch: int, env_step: int) -> None:
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# nature DQN setting, linear decay in the first 1M steps
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if env_step <= 1e6:
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eps = args.eps_train - env_step / 1e6 * (args.eps_train - args.eps_train_final)
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else:
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eps = args.eps_train_final
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policy.set_eps(eps)
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if env_step % 1000 == 0:
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logger.write("train/env_step", env_step, {"train/eps": eps})
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def test_fn(epoch: int, env_step: int | None) -> None:
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policy.set_eps(args.eps_test)
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# watch agent's performance
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def watch() -> None:
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print("Setup test envs ...")
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policy.eval()
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policy.set_eps(args.eps_test)
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test_envs.seed(args.seed)
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if args.save_buffer_name:
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print(f"Generate buffer with size {args.buffer_size}")
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buffer = VectorReplayBuffer(
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args.buffer_size,
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buffer_num=len(test_envs),
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ignore_obs_next=True,
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save_only_last_obs=True,
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stack_num=args.frames_stack,
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)
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collector = Collector(policy, test_envs, buffer, exploration_noise=True)
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result = collector.collect(n_step=args.buffer_size)
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print(f"Save buffer into {args.save_buffer_name}")
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# Unfortunately, pickle will cause oom with 1M buffer size
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buffer.save_hdf5(args.save_buffer_name)
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else:
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print("Testing agent ...")
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test_collector.reset()
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result = test_collector.collect(n_episode=args.test_num, render=args.render)
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rew = result.returns_stat.mean
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lens = result.lens_stat.mean * args.skip_num
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print(f"Mean reward (over {result.n_collected_episodes} episodes): {rew}")
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print(f"Mean length (over {result.n_collected_episodes} episodes): {lens}")
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if args.watch:
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watch()
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sys.exit(0)
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# test train_collector and start filling replay buffer
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train_collector.collect(n_step=args.batch_size * args.training_num)
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# trainer
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result = OffpolicyTrainer(
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policy=policy,
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train_collector=train_collector,
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test_collector=test_collector,
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max_epoch=args.epoch,
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step_per_epoch=args.step_per_epoch,
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step_per_collect=args.step_per_collect,
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episode_per_test=args.test_num,
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batch_size=args.batch_size,
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train_fn=train_fn,
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test_fn=test_fn,
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stop_fn=stop_fn,
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save_best_fn=save_best_fn,
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logger=logger,
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update_per_step=args.update_per_step,
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test_in_train=False,
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).run()
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pprint.pprint(result)
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watch()
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if __name__ == "__main__":
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test_c51(get_args())
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