Created
February 20, 2019 14:29
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Training Process for A2C model.
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# Set up training process. | |
from collections import deque | |
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu") | |
agent_a2c = A2CModel().to(device) | |
optimizer = optim.Adam(agent_a2c.parameters(), lr=0.00015) | |
env_info = env.reset(train_mode=True)[brain_name] | |
states = env_info.vector_observations | |
init_states = states | |
n_episodes = 1 | |
n_steps = 10 | |
episode_end = False | |
a2c_ep_rewards_list = [] | |
ep_rewards_deque = deque([0], maxlen=100) # initialize with 0 | |
ep_rewards = 0 | |
while True: | |
batch_s, batch_a, batch_v_t, accu_rewards, init_states, episode_end = collect_trajectories( | |
agent_a2c, env, brain_name, init_states, episode_end, n_steps) | |
loss, mus, stds = learn(batch_s, batch_a, batch_v_t, agent_a2c, optimizer) | |
ep_rewards += accu_rewards | |
print('\rEpisode {:>4}\tEpisodic Score {:>7.3f}\tLoss {:>12.6f}'.format( | |
n_episodes, np.mean(ep_rewards_deque), float(loss)), end="") | |
if episode_end == True: | |
if n_episodes % 100 == 0: | |
print('\rEpisode {:>4}\tEpisodic Score {:>7.3f}\tLoss {:>12.6f}'.format( | |
n_episodes, np.mean(ep_rewards_deque), float(loss))) | |
if np.mean(ep_rewards_deque) >= 34: | |
break | |
a2c_ep_rewards_list.append(ep_rewards/num_agents) | |
ep_rewards_deque.append(ep_rewards/num_agents) | |
ep_rewards = 0 | |
n_episodes += 1 | |
episode_end = False | |
# save a2c model | |
pth = './checkpoint/a2c_checkpoint.pth' | |
torch.save(agent_a2c.state_dict(), pth) | |
a2c_ep_rewards_list = np.array(a2c_ep_rewards_list) | |
np.save('./data/a2c_ep_rewards_list.npy', a2c_ep_rewards_list) |
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