def optimize(self, params, optimizer, shared_model, gpu_id):
if 'Unreal' in self.args.env:
self.gate_ids = self.env.env.env.env.gate_ids
else:
self.gate_ids = self.env.gate_ids
self.random_ids = self.env.random_ids
R = torch.zeros(self.num_agents, 1).to(self.device)
if not self.done:
# predict value
state = self.state
value_multi, *others = self.model(
(
(Variable(state, requires_grad=True), (self.img_hxs, self.img_cxs)),
(Variable(torch.Tensor(self.cam_info), requires_grad=True), (self.pose_hxs, self.pose_cxs)),
(Variable(torch.Tensor(self.pre_actions), requires_grad=True),
Variable(torch.Tensor(self.gate_ids)),
Variable(torch.Tensor(self.random_ids)))
)
)
for i in range(self.num_agents):
R[i][0] = value_multi[i].data
self.values.append(Variable(R).to(self.device))
policy_loss = torch.zeros(self.num_agents, 1).to(self.device)
value_loss = torch.zeros(self.num_agents, 1).to(self.device)
pred_loss = torch.zeros(1, 1).to(self.device)
entropies = torch.zeros(self.num_agents, 1).to(self.device)
w_entropies = torch.Tensor([[float(self.args.entropy)] for i in range(self.num_agents)]).to(self.device)
R = Variable(R, requires_grad=True).to(self.device)
gae = torch.zeros(1, 1).to(self.device)
for i in reversed(range(len(self.rewards))):
R = self.args.gamma * R + self.rewards[i]
advantage = R - self.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = self.rewards[i] + self.args.gamma * self.values[i + 1].data - self.values[i].data
gae = gae * self.args.gamma * self.args.tau + delta_t
policy_loss = policy_loss - \
(self.log_probs[i] * Variable(gae)) - \
(w_entropies * self.entropies[i])
entropies += self.entropies[i]
policy_loss = policy_loss[self.env.random_ids]
value_loss = value_loss[self.env.random_ids]
loss = policy_loss.sum() + 0.5 * value_loss.sum()
self.model.zero_grad()
loss.backward()
torch.nn.utils.clip_grad_norm_(params, 50)
ensure_shared_grads(self.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
values0 = self.values[0].data
self.clear_actions()
return policy_loss, value_loss, entropies, pred_loss, values0
def train(shared_model, optimizer, wholes, scaffolds, whole_conditions, scaffold_conditions, pid, retval_list, args):
"""\
Target function for the multiprocessed training.
In addition to updating model parameters,
loss values are collected by `retval_list` after each `forward`.
Parameters
----------
shared_model: torch.nn.Module
A shared model to be trained.
optimizer: torch.optim.Optimizer
A shared optimizer.
wholes: list[str]
A list of whole-molecule SMILESs.
scaffolds: list[str]
A list of scaffold SMILESs.
whole_conditions: list[ list[float] ]
[
[ value1, value2, ... ], # condition values of whole 1
[ value1, value2, ... ], # condition values of whole 2
]
scaffold_conditions: list[ list[float] ]
Similar to `whole_conditions`, but with scaffold values.
pid: int
CPU index.
retval_list: list[multiprocessing.managers.ListProxy]
A list of lists to collect loss floats from CPUs.
In each cycle, the final shape will be:
(ncpus, minibatch_size, num_of_losses)
args: argparse.Namespace
Delivers parameters from command arguments to the model.
"""
#each thread make new model
model=ggm(args)
for idx in range(len(wholes)):
#set parameters of model as same as that of reference model
model.load_state_dict(shared_model.state_dict())
model.zero_grad()
optimizer.zero_grad()
#forward
retval = model(wholes[idx], scaffolds[idx], whole_conditions[idx], scaffold_conditions[idx], args.shuffle_order)
#if retval is None, some error occured. it is usually due to invalid smiles
if retval is None:
continue
#train model
g_gen, h_gen, loss1, loss2, loss3 = retval
loss = loss1 + loss2*args.beta1 + loss3 # torch.autograd.Variable of shape (1,)
retval_list[pid].append((loss.data.cpu().numpy()[0], loss1.data.cpu().numpy()[0], loss2.data.cpu().numpy()[0], loss3.data.cpu().numpy()[0]))
loss.backward()
#torch.nn.utils.clip_grad_norm(model.parameters(), 0.5)
utils.ensure_shared_grads(model, shared_model, True)
optimizer.step()
def work(self):
"""
Worker training procedure
"""
self.step = 0
self.model_state = copy.deepcopy(
self.local_model.init_state(self.device))
while True:
self.step += 1
# update local variables with the weights
# of the global net
if self.cfg.USE_GPU:
with torch.cuda.device(self.gpu_id):
self.local_model.load_state_dict(
self.global_model.state_dict())
else:
self.local_model.load_state_dict(
self.global_model.state_dict())
# accumulate some experience
# and build the loss
loss = self.process_rollout()
# backward pass and
# update the global model weights
self.local_model.zero_grad()
loss.backward()
#torch.nn.utils.clip_grad_norm_(filter(lambda p: p.requires_grad, self.local_model.parameters()), 40.0)
ut.ensure_shared_grads(self.local_model,
self.global_model,
use_gpu=self.cfg.USE_GPU)
self.optimizer.step()
self.logger.log_value('loss',
self.step,
loss.item(),
print_value=False,
to_file=False)
if (self.step % self.cfg.SAVE_STEP) == 0 and (
self.ident % 4 == 0): #self.name == 'a3c_train_worker_0':
torch.save(self.global_model.state_dict(), self.ckpt_path)
print('Variables saved')
if self.episode_count > self.cfg.MAX_EPISODES:
# terminate the training
if self.worker_name == 'a3c_train_worker_0':
torch.save(self.global_model.state_dict(), self.ckpt_path)
print('Variables saved')
break
def training(self, next_observation, shared_model, shared_optimizer,
params):
self.model.train()
self.n_update += 1
self.cx = Variable(self.cx.data)
self.hx = Variable(self.hx.data)
R = torch.zeros(1, 1)
if not self.done:
self.state = preprocess(next_observation)
with torch.cuda.device(self.gpu_id):
obs = Variable(torch.FloatTensor(self.state)).cuda()
value, _, _, _, _ = self.model(obs, self.target, self.hx, self.cx,
self.eps_len, self.external_memory,
self.gpu_id)
R = value.data
if self.gpu_id >= 0:
with torch.cuda.device(self.gpu_id):
R = R.cuda()
R = Variable(R)
self.values.append(R)
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if self.gpu_id >= 0:
with torch.cuda.device(self.gpu_id):
gae = gae.cuda()
for i in reversed(range(len(self.rewards))):
R = params.gamma * R + self.rewards[i]
advantage = R - self.values[i]
value_loss = value_loss + advantage.pow(2) # 0.5 *
# Generalized Advantage Estimataion
delta_t = params.gamma * self.values[
i + 1].data - self.values[i].data + self.rewards[i]
gae = gae * params.gamma * params.tau + delta_t
policy_loss = policy_loss - self.log_probs[i] * Variable(
gae) - params.entropy_coef * self.entropies[i]
self.model.zero_grad()
(policy_loss +
params.value_loss_coef * value_loss).backward() #retain_graph=True
clip_grad_norm_(self.model.parameters(), 1.0)
ensure_shared_grads(self.model, shared_model, gpu=self.gpu_id >= 0)
shared_optimizer.step()
with torch.cuda.device(self.gpu_id):
self.model.load_state_dict(
shared_model.state_dict()) #model update
self.clear_actions()
def train(self, global_t, summary_writer=None):
t = self.local_t
if not self.replay_buffer.is_full():
self.fill_experience()
return 0 # time_step = 0
# sync
if self.gpu_id >= 0:
with torch.cuda.device(self.gpu_id):
self.model.load_state_dict(self.shared_model.state_dict())
else:
self.model.load_state_dict(self.shared_model.state_dict())
loss_a3c, episode_score = self.process_a3c()
# 获取 hx, cx
h0, c0 = self.hx.detach(), self.cx.detach()
loss_pc = self.process_pc(h0=h0, c0=c0)
h0, c0 = self.hx.detach(), self.cx.detach()
loss_vr = self.process_vr(h0, c0)
loss_rp = self.process_rp()
loss = loss_a3c + loss_pc + loss_vr + loss_rp
self.model.zero_grad()
loss.backward()
clip_grad_norm_(self.model.parameters(), 40.0)
ensure_shared_grads(self.model,
self.shared_model,
gpu=self.gpu_id >= 0)
self.adjust_learning_rate(optimizer=self.optimizer,
global_time_step=global_t)
self.optimizer.step()
if summary_writer is not None:
with torch.no_grad():
losses = list(
map(lambda x: float(x.detach().cpu().numpy()),
[loss_a3c, loss_pc, loss_vr, loss_rp, loss]))
tags = dict(
zip(['a3c', 'pc', 'vr', 'rp', 'total_loss'], losses))
summary_writer.add_scalars('losses',
tags,
global_step=global_t)
# 分数
if episode_score:
summary_writer.add_scalars('score',
{'score': episode_score},
global_step=global_t)
self._print_log(global_t)
return self.local_t - t # offset
def training(self, next_obs, shared_model, shared_optimizer, params):
#pdb.set_trace()
# self.model.train()
self.cx = Variable(self.cx.data)
self.hx = Variable(self.hx.data)
R = torch.zeros(1, 1)
if not self.done:
state = preprocessing(next_obs, self.obs_old, self.gpu_id)
value, _, _, _ = self.model(state, self.hx, self.cx)
R = value.data
with torch.cuda.device(self.gpu_id):
R = R.cuda()
R = Variable(R)
self.values.append(R)
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
with torch.cuda.device(self.gpu_id):
gae = gae.cuda()
for i in reversed(range(len(self.rewards))):
R = params.gamma * R + self.rewards[i]
advantage = R - self.values[i]
value_loss = value_loss + advantage.pow(2) # 0.5 *
# Generalized Advantage Estimation
delta_t = params.gamma * self.values[
i + 1].data - self.values[i].data + self.rewards[i]
gae = gae * params.gamma * params.tau + delta_t
policy_loss = policy_loss - self.log_probs[i] * Variable(
gae) - params.entropy_coef * self.entropies[i]
shared_optimizer.zero_grad()
loss = policy_loss + params.value_loss_coef * value_loss
loss.backward()
clip_grad_norm_(self.model.parameters(), 50.0)
ensure_shared_grads(self.model, shared_model, gpu=self.gpu_id >= 0)
shared_optimizer.step()
# self.synchronize(shared_model)
with torch.cuda.device(self.gpu_id):
self.model.load_state_dict(shared_model.state_dict())
self.clear_all()
def optimize(self, params, optimizer, shared_model, training_mode,
device_share):
R = torch.zeros(len(self.rewards[0]), 1).to(self.device)
if not self.done:
# predict value
state = self.state
value_multi, *others = self.model(
Variable(state, requires_grad=True))
for i in range(len(self.rewards[0])): # num_agent
R[i][0] = value_multi[i].data
self.values.append(Variable(R).to(self.device))
batch_size = len(self.entropies[0][0])
policy_loss = torch.zeros(batch_size, 1).to(self.device)
value_loss = torch.zeros(1, 1).to(self.device)
entropies = torch.zeros(batch_size, self.dim_action).to(self.device)
w_entropies = float(self.args.entropy)
R = Variable(R, requires_grad=True).to(self.device)
gae = torch.zeros(1, 1).to(self.device)
for i in reversed(range(len(self.rewards))):
R = self.args.gamma * R + self.rewards[i]
advantage = R - self.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = self.rewards[i] + self.args.gamma * self.values[
i + 1].data - self.values[i].data
gae = gae * self.args.gamma * self.args.tau + delta_t
policy_loss = policy_loss - \
(self.log_probs[i] * Variable(gae)) - \
(w_entropies * self.entropies[i])
entropies += self.entropies[i].sum()
self.model.zero_grad()
loss = policy_loss.sum() + 0.5 * value_loss.sum()
loss.backward(retain_graph=True)
torch.nn.utils.clip_grad_norm_(params, 50)
ensure_shared_grads(self.model, shared_model, self.device,
device_share)
optimizer.step()
self.clean_buffer(self.done)
return policy_loss, value_loss, entropies
def train (rank, args, shared_model, optimizer, env_conf, datasets=None):
ptitle('Training Agent: {}'.format(rank))
print ('Start training agent: ', rank)
if rank == 0:
logger = Logger (args.log_dir)
train_step = 0
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
env_conf ["env_gpu"] = gpu_id
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
if "EM_env" in args.env:
raw, lbl, prob, gt_lbl = datasets
env = EM_env (raw, lbl, prob, env_conf, 'train', gt_lbl)
else:
env = Voronoi_env (env_conf)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop (shared_model.parameters (), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam (shared_model.parameters (), lr=args.lr, amsgrad=args.amsgrad)
# env.seed (args.seed + rank)
if not args.continuous:
player = Agent (None, env, args, None)
else:
player = Agent_continuous (None, env, args, None)
player.gpu_id = gpu_id
if not args.continuous:
player.model = A3Clstm (env.observation_space.shape, env_conf["num_action"], args.hidden_feat)
else:
player.model = A3Clstm_continuous (env.observation_space.shape, env_conf["num_action"], args.hidden_feat)
player.state = player.env.reset ()
player.state = torch.from_numpy (player.state).float ()
old_score = player.env.old_score
final_score = 0
if gpu_id >= 0:
with torch.cuda.device (gpu_id):
player.state = player.state.cuda ()
player.model = player.model.cuda ()
player.model.train ()
if rank == 0:
eps_reward = 0
pinned_eps_reward = 0
mean_log_prob = 0
# print ("rank: ", rank)
while True:
if gpu_id >= 0:
with torch.cuda.device (gpu_id):
player.model.load_state_dict (shared_model.state_dict ())
else:
player.model.load_state_dict (shared_model.state_dict ())
if player.done:
player.eps_len = 0
if rank == 0:
if 0 <= (train_step % args.train_log_period) < args.max_episode_length:
print ("train: step", train_step, "\teps_reward", eps_reward,
"\timprovement", final_score - old_score)
old_score = player.env.old_score
pinned_eps_reward = eps_reward
eps_reward = 0
mean_log_prob = 0
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, args.hidden_feat).cuda())
player.hx = Variable(torch.zeros(1, args.hidden_feat).cuda())
else:
player.cx = Variable(torch.zeros(1, args.hidden_feat))
player.hx = Variable(torch.zeros(1, args.hidden_feat))
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player.action_train ()
if rank == 0:
# if 0 <= (train_step % args.train_log_period) < args.max_episode_length:
# print ("train: step", train_step, "\taction = ", player.action)
eps_reward += player.reward
# print (eps_reward)
mean_log_prob += player.log_probs [-1] / env_conf ["T"]
if player.done:
break
if player.done:
# if rank == 0:
# print ("----------------------------------------------")
final_score = player.env.old_score
state = player.env.reset ()
player.state = torch.from_numpy (state).float ()
if gpu_id >= 0:
with torch.cuda.device (gpu_id):
player.state = player.state.cuda ()
R = torch.zeros (1, 1)
if not player.done:
if not args.continuous:
value, _, _ = player.model((Variable(player.state.unsqueeze(0)),
(player.hx, player.cx)))
else:
value, _, _, _ = player.model((Variable(player.state.unsqueeze(0)),
(player.hx, player.cx)))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
delta_t = player.values[i + 1].data * args.gamma + player.rewards[i] - \
player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
# print (player.rewards [i])
if not args.continuous:
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
else:
policy_loss = policy_loss - \
player.log_probs[i].sum () * Variable(gae) - \
0.01 * player.entropies[i].sum ()
player.model.zero_grad ()
sum_loss = (policy_loss + value_loss)
sum_loss.backward ()
ensure_shared_grads (player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step ()
player.clear_actions ()
if rank == 0:
train_step += 1
if train_step % args.log_period == 0:
log_info = {
# 'train: sum_loss': sum_loss,
'train: value_loss': value_loss,
'train: policy_loss': policy_loss,
'train: advanage': advantage,
# 'train: entropy': entropy,
'train: eps reward': pinned_eps_reward,
# 'train: mean log prob': mean_log_prob
}
for tag, value in log_info.items ():
logger.scalar_summary (tag, value, train_step)
def trainhoc(rank, args, shared_model, optimizer, env_conf):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = OC_env(args.env)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = HOCAgent(None, env, args, None)
player.gpu_id = gpu_id
player.model = HOCModel(player.env.observation_space.shape[0],
player.env.action_space, args.options, args.width)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
threshold = 0
EnvNumSteps = 0
while True:
if EnvNumSteps > threshold:
threshold += 5000
print("thread:", rank, "steps:", EnvNumSteps)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
### add in option selection part
probo1, logpo1, player.o1 = player.model.getPolicyO1(
Variable(player.state))
probo2, logpo2, player.o2 = player.model.getPolicyO2(
Variable(player.state), player.o1)
else:
player.o1 = player.o1
player.o2 = player.o2
for step in range(args.num_steps):
EnvNumSteps += 1
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
q = player.model(Variable(player.state))
v = q.max(-1)[0]
R = v.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = torch.zeros(1, 1)
value_loss = torch.zeros(1, 1)
phi_loss = torch.zeros(1, 1)
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
thesize = len(player.rewards)
for i in reversed(range(len(player.rewards))):
### update discounted reward
before = R
R = args.gamma * R + player.rewards[i]
### update value function
difference1 = R - player.qs1[i]
value_loss = value_loss + 0.5 * difference1.pow(2)
difference2 = R - player.qs2[i]
value_loss = value_loss + 0.5 * difference2.pow(2)
if i + 1 < thesize:
difference3 = before - player.values[i + 1]
difference4 = before - player.qs1[i + 1]
### update policy
# adv1 = R - player.qs1[i]
delta2 = R - player.qs2[i]
policy_loss = policy_loss - \
player.log_probsa[i] * \
Variable(delta2) - 0.1 * player.entropiesA[i]
if i + 1 < thesize:
beta1 = player.termprobs1[i + 1].data
beta2 = player.termprobs2[i + 1].data
policy_loss = policy_loss - \
args.gamma * player.log_probso1[i+1] * \
Variable(beta1 * beta2 * difference3.data) - 0.1 * player.entropieso1[i+1]
policy_loss = policy_loss - \
args.gamma * player.log_probso2[i+1] * \
Variable(beta2 * difference4.data) - 0.1 * player.entropieso2[i+1]
advantage1 = player.qs1[i + 1].data - player.values[
i + 1].data + args.delib
phi_loss = phi_loss + \
args.gamma * player.termprobs1[i+1] * \
Variable(advantage1 * beta2, requires_grad=False)
advantage2 = player.qs2[
i + 1].data - (1 - beta1) * player.qs1[i + 1].data - (
beta1 * player.values[i + 1].data) + args.delib
phi_loss = phi_loss + \
args.gamma * player.termprobs2[i+1] * \
Variable(advantage2, requires_grad=False)
player.model.zero_grad()
(phi_loss.sum() + policy_loss.sum() +
0.5 * value_loss.sum()).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = create_env(args.env, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(), lr=args.lr)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
if args.model == 'MLP':
player.model = A3C_MLP(player.env.observation_space.shape[0],
player.env.action_space, args.stack_frames)
if args.model == 'CONV':
player.model = A3C_CONV(args.stack_frames, player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, 128).cuda())
player.hx = Variable(torch.zeros(1, 128).cuda())
else:
player.cx = Variable(torch.zeros(1, 128))
player.hx = Variable(torch.zeros(1, 128))
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
player.eps_len = 0
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = torch.zeros(1, 1).cuda()
else:
R = torch.zeros(1, 1)
if not player.done:
state = player.state
if args.model == 'CONV':
state = state.unsqueeze(0)
value, _, _, _ = player.model(
(Variable(state), (player.hx, player.cx)))
R = value.data
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
R = Variable(R)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = torch.zeros(1, 1).cuda()
else:
gae = torch.zeros(1, 1)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
# print(player.rewards[i])
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
(player.log_probs[i].sum() * Variable(gae)) - \
(0.01 * player.entropies[i].sum())
player.model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def act(self):
self.model.load_state_dict(self.shared_model.state_dict())
self.model.train()
log_probs, entropies, rewards, values = [], [], [], []
for _ in range(self.t_max):
pout, vout = self.model.pi_and_v(self.state_var)
reward = self.env.receive_action(pout.action_indices[0])
if self.clip_reward:
reward = np.clip(reward, -1, 1)
log_probs.append(pout.sampled_actions_log_probs)
entropies.append(pout.entropy)
values.append(vout)
rewards.append(reward)
if self.env.is_terminal:
break
self.update_state()
R = 0
if not self.env.is_terminal:
_, vout = self.model.pi_and_v(self.state_var, keep_same_state=True)
R = float(vout.data.numpy())
else:
self.env.reset()
self.model.reset_state()
self.update_state()
t = len(rewards)
pi_loss, v_loss = 0, 0
for i in reversed(range(t)):
R = self.gamma*R + rewards[i]
v = values[i]
advantage = R - float(v.data.numpy()[0, 0])
# Accumulate gradients of policy
log_prob = log_probs[i]
entropy = entropies[i]
# Log probability is increased proportionally to advantage
pi_loss -= log_prob * advantage
# Entropy is maximized
pi_loss -= self.beta * entropy
# Accumulate gradients of value function
v_loss += (v - R).pow(2).div_(2)
if self.pi_loss_coef != 1.0:
pi_loss *= self.pi_loss_coef
if self.v_loss_coef != 1.0:
v_loss *= self.v_loss_coef
# Normalize the loss of sequences truncated by terminal states
if self.keep_loss_scale_same and t < self.t_max:
factor = self.t_max / t
pi_loss *= factor
v_loss *= factor
total_loss = pi_loss + v_loss
# Compute gradients using thread-specific model
self.optimizer.zero_grad()
total_loss.backward()
torch.nn.utils.clip_grad_norm(self.model.parameters(), 40)
# Copy the gradients to the globally shared model
ensure_shared_grads(self.model, self.shared_model)
self.optimizer.step()
self.model.unchain_backward()
return t
def train(rank, args, shared_model, optimizer, env_conf):
torch.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf)
model = A3Clstm(env.observation_space.shape[0], env.action_space)
_ = env.reset()
action = env.action_space.sample()
_, _, _, info = env.step(action)
start_lives = info['ale.lives']
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(), lr=args.lr)
model.train()
env.seed(args.seed + rank)
state = env.reset()
state = torch.from_numpy(state).float()
done = True
episode_length = 0
current_life = start_lives
while True:
episode_length += 1
# Sync with the shared model
model.load_state_dict(shared_model.state_dict())
if done:
cx = Variable(torch.zeros(1, 512))
hx = Variable(torch.zeros(1, 512))
else:
cx = Variable(cx.data)
hx = Variable(hx.data)
values = []
log_probs = []
rewards = []
entropies = []
for step in range(args.num_steps):
value, logit, (hx, cx) = model(
(Variable(state.unsqueeze(0)), (hx, cx)))
prob = F.softmax(logit)
log_prob = F.log_softmax(logit)
entropy = -(log_prob * prob).sum(1)
entropies.append(entropy)
action = prob.multinomial().data
log_prob = log_prob.gather(1, Variable(action))
state, reward, done, info = env.step(action.numpy())
done = done or episode_length >= args.max_episode_length
if args.count_lives:
if current_life > info['ale.lives']:
done = True
else:
current_life = info['ale.lives']
reward = max(min(reward, 1), -1)
if done:
episode_length = 0
current_life = start_lives
state = env.reset()
state = torch.from_numpy(state).float()
values.append(value)
log_probs.append(log_prob)
rewards.append(reward)
if done:
break
R = torch.zeros(1, 1)
if not done:
value, _, _ = model((Variable(state.unsqueeze(0)), (hx, cx)))
R = value.data
values.append(Variable(R))
policy_loss = 0
value_loss = 0
R = Variable(R)
gae = torch.zeros(1, 1)
for i in reversed(range(len(rewards))):
R = args.gamma * R + rewards[i]
advantage = R - values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = rewards[i] + args.gamma * \
values[i + 1].data - values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
log_probs[i] * Variable(gae) - 0.01 * entropies[i]
optimizer.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
torch.nn.utils.clip_grad_norm(model.parameters(), 40)
ensure_shared_grads(model, shared_model)
optimizer.step()
def train(shared_model, optimizer, rank, global_steps, args):
setproctitle('{}:train[{}]'.format(args.name, rank))
torch.manual_seed(args.seed + rank)
torch.cuda.manual_seed(args.seed + rank)
env = create_env(args.game_type, args.env_name, 'train:{}'.format(rank),
args.remotes[rank])
env._max_episode_steps = args.max_episode_length
env.seed(args.seed + rank)
model = copy.deepcopy(shared_model)
gpu_id = args.gpu_ids[rank]
with torch.cuda.device(gpu_id):
model = model.cuda() if gpu_id >= 0 else model
model.train()
optimizer = optimizer or optim.Adam(shared_model.parameters(), lr=args.lr)
done = True
try:
while True:
# Sync with the shared model
with torch.cuda.device(gpu_id):
model.load_state_dict(shared_model.state_dict())
if done:
with torch.cuda.device(gpu_id):
state = torch.from_numpy(env.reset()).float()
state = state.cuda() if gpu_id >= 0 else state
model.reset()
values, log_probs, rewards, entropies = [], [], [], []
for step in range(args.n_steps):
with global_steps.get_lock():
global_steps.value += 1
value, logit = model(Variable(state.unsqueeze(0)))
prob = F.softmax(logit)
log_prob = F.log_softmax(logit)
entropy = -(log_prob * prob).sum(1)
action = prob.multinomial().data
log_prob = log_prob.gather(1, Variable(action))
raw_state, reward, done, _ = env.step(action.cpu().numpy())
reward = max(min(reward, args.max_reward), args.min_reward)
values.append(value)
log_probs.append(log_prob)
rewards.append(reward)
entropies.append(entropy)
if done:
break
state = state.copy_(torch.from_numpy(raw_state).float())
R = state.new().resize_((1, 1)).zero_()
if not done:
value, _ = model(Variable(state.unsqueeze(0), volatile=True),
keep_same_state=True)
R = value.data
values.append(Variable(R))
policy_loss, value_loss = 0, 0
R = Variable(R)
gae = state.new().resize_((1, 1)).zero_()
for i in reversed(range(len(rewards))):
R = args.gamma * R + rewards[i]
advantage = R - values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = rewards[i] + args.gamma * values[
i + 1].data - values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - log_probs[i] * Variable(
gae) - 0.01 * entropies[i]
model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
torch.nn.utils.clip_grad_norm(model.parameters(), 40)
ensure_shared_grads(model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
model.detach()
if global_steps.value >= args.max_global_steps:
break
except Exception as e:
raise
finally:
print('Trainer [{}] finished !'.format(rank))
def train_rep(args, shared_model, env_conf):
batch_size = 16
train_times = args.rep_train_time
trace = []
td_class = [(0, 1), (1, 2), (2, 3), (3, 5), (5, 7), (7, 9)]
loss_fn = nn.CrossEntropyLoss()
optimizer_r = Adam(shared_model.r_net.parameters(), lr=args.rl_r)
optimizer_c = Adam(shared_model.c_net.parameters(), lr=args.rl_r)
ptitle('Train rep')
gpu_id = args.gpu_ids[-1]
torch.manual_seed(args.seed)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed)
env = atari_env(args.env, env_conf, args)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model = player.model.cuda()
player.state = player.state.cuda()
# player.model.r_net = player.model.r_net.cuda()
# player.model.c_net = player.model.c_net.cuda()
flag = True
while True:
if flag:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
player.model.train()
flag = False
player.action_test()
trace.append(player.state)
if len(trace) > args.trace_length:
# 训练几百次
for _ in range(train_times):
range_c = np.random.randint(0, len(td_class))
TD = np.random.randint(td_class[range_c][0],
td_class[range_c][1])
begin = np.random.randint(0, len(trace) - TD - batch_size)
former = torch.stack(trace[begin:begin + batch_size], dim=0)
latter = torch.stack(trace[begin + TD:begin + TD + batch_size],
dim=0)
target = torch.zeros(batch_size, dtype=torch.long) + range_c
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
former = former.cuda()
latter = latter.cuda()
target = target.cuda()
rep_f, rep_l = player.model.r_net(former), player.model.r_net(
latter)
output = player.model.c_net(rep_f, rep_l, False)
loss = loss_fn(output, target)
optimizer_r.zero_grad()
optimizer_c.zero_grad()
loss.backward()
ensure_shared_grads(player.model.r_net,
shared_model.r_net,
gpu=gpu_id >= 0)
ensure_shared_grads(player.model.c_net,
shared_model.c_net,
gpu=gpu_id >= 0)
optimizer_r.step()
optimizer_c.step()
trace = []
if player.done and not player.info:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
elif player.info:
flag = True
state = player.env.reset()
time.sleep(10)
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
def train(rank, args, shared_model, optimizer, env_conf, iters,
checkpoint_path):
iters = dill.loads(iters)
if args.enable_gavel_iterator and rank == 0:
iters._init_logger()
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
elapsed_time = 0
start_time = time.time()
for i in iters:
if i % 100 == 0:
print('GPU %d finished step %d' % (rank, i), flush=True)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, 512).cuda())
player.hx = Variable(torch.zeros(1, 512).cuda())
else:
player.cx = Variable(torch.zeros(1, 512))
player.hx = Variable(torch.zeros(1, 512))
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
player.model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
elapsed_time += time.time() - start_time
start_time = time.time()
if (args.throughput_estimation_interval is not None
and i % args.throughput_estimation_interval == 0
and rank == 0):
print('[THROUGHPUT_ESTIMATION]\t%s\t%d' % (time.time(), i))
if (args.max_duration is not None
and elapsed_time >= args.max_duration):
break
if args.enable_gavel_iterator and rank == 0:
state = shared_model.state_dict()
iters.save_checkpoint(state, checkpoint_path)
iters.complete()
def trainocpg(rank, args, shared_model, optimizer, env_conf):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = OC_env(args.env)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = OCPGAgent(None, env, args, None)
player.gpu_id = gpu_id
player.model = OCPGModel(player.env.observation_space.shape[0],
player.env.action_space, args.options, args.width)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
threshold = 0
EnvNumSteps = 0
reward_mean = 0.
while True:
if EnvNumSteps > threshold:
threshold += 5000
print("thread:", rank, "steps:", EnvNumSteps)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
### add in option selection part
q, logito = player.model(Variable(player.state))
probo = F.softmax(logito, dim=1)
player.otensor = probo.multinomial(1).data
player.o = player.otensor.numpy()[0][0]
else:
player.o = player.o
for step in range(args.num_steps):
EnvNumSteps += 1
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
# if not player.done:
q, logito = player.model(Variable(player.state))
v = q.max(-1)[0]
R = v.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = torch.zeros(1, 1)
value_loss = torch.zeros(1, 1)
phi_loss = torch.zeros(1, 1)
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
thesize = len(player.rewards)
reward_sum = sum(player.rewards)
reward_mean = reward_mean + (reward_sum -
thesize * reward_mean) / EnvNumSteps
JPi = Variable(torch.tensor(reward_mean))
for i in reversed(range(len(player.rewards))):
before = R
R = args.gamma * R + player.rewards[i] - JPi
difference = R - player.qs[i]
if i + 1 < thesize:
difference2 = before - player.values[i + 1]
else:
NextQ, NextLogito = player.model(Variable(player.state))
NextTerm = player.model.getTermination(Variable(player.state),
player.o)
NextProbso = F.softmax(NextLogito, dim=1)
### select new option
otensor = NextProbso.multinomial(1).data
NextLog_probso = F.log_softmax(NextLogito, dim=1)
NextValue = NextQ.max(-1)[0]
NextQ = NextQ[0][otensor.numpy()[0][0]]
NextEntropyso = -(NextLog_probso * NextProbso).sum(1)
NextLog_probso = NextLog_probso.gather(1, Variable(otensor))
difference2 = before - NextValue
value_loss = value_loss + 0.5 * difference.pow(2)
policy_loss = policy_loss - player.log_probs[i] * Variable(
difference.data) - 0.1 * player.entropies[i]
if i + 1 < thesize:
beta = player.termprobs[i + 1].data
policy_loss = policy_loss - args.gamma * beta * player.log_probso[
i + 1] * Variable(
difference2.data) - 0.1 * player.entropieso[i + 1]
###!!!!! termination update
advantage = player.qs[i + 1].data - player.values[
i + 1].data + args.delib
phi_loss = phi_loss + args.gamma * player.termprobs[
i + 1] * Variable(advantage, requires_grad=False)
else:
beta = NextTerm.data
policy_loss = policy_loss - args.gamma * beta * NextLog_probso * Variable(
difference2.data) - 0.1 * NextEntropyso
###!!!!! termination update
advantage = NextQ.data - NextValue.data + args.delib
phi_loss = phi_loss + args.gamma * NextTerm * Variable(
advantage, requires_grad=False)
player.model.zero_grad()
(phi_loss.sum() + policy_loss.sum() +
0.5 * value_loss.sum()).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
if str(rank) == "1":
fullname = args.save_model_dir + args.env + str(rank) + ".torch"
tmpname = args.save_model_dir + args.env + str(rank) + ".tmp"
torch.save(optimizer.state_dict(),
tmpname) #optimizer.state_dict()
os.rename(tmpname, fullname)
def train(rank, reward_type, args, shared_model, optimizer, env_conf):
log = {}
setup_logger('{}_log'.format(args.env),
r'{0}{1}_log'.format(args.log_dir, args.env))
log['{}_log'.format(args.env)] = logging.getLogger('{}_log'.format(
args.env))
d_args = vars(args)
for k in d_args.keys():
log['{}_log'.format(args.env)].info('{0}: {1}'.format(k, d_args[k]))
torch.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf)
env.seed(args.seed + rank)
reward_sum = 0
start_time = time.time()
num_tests = 0
reward_total_sum = 0
player = Agent(None, env, args, None, reward_type)
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
player.model.train()
for i in itertools.count():
if i % 10 == 0:
print("reward type {0}, iter {1}".format(reward_type, i))
player.model.load_state_dict(shared_model.state_dict())
for step in range(args.num_steps):
player.action_train()
reward_sum += player.reward
if args.count_lives:
player.check_state()
if player.done:
break
if player.done:
num_tests += 1
player.current_life = 0
reward_total_sum += reward_sum
reward_mean = reward_total_sum / num_tests
log['{}_log'.format(args.env)].info(
"Time {0}, episode reward {1}, episode length {2}, reward mean {3:.4f}"
.format(
time.strftime("%Hh %Mm %Ss",
time.gmtime(time.time() - start_time)),
reward_sum, player.eps_len, reward_mean))
player.eps_len = 0
player.current_life = 0
state = player.env.reset()
player.state = torch.from_numpy(state).float()
R = torch.zeros(1, 1)
if not player.done:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
R = Variable(R)
gae = torch.zeros(1, 1)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
optimizer.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
torch.nn.utils.clip_grad_norm(player.model.parameters(), 40)
ensure_shared_grads(player.model, shared_model)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer, env_conf, shared_counter,
targ_shared):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
device = torch.device('cuda:{}'.format(gpu_id) if gpu_id >= 0 else 'cpu')
torch.manual_seed(args.seed + rank)
torch.cuda.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None, gpu_id=gpu_id)
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.model.apply(weights_init)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).to(torch.float32)
player.state = player.state.to(device)
player.model = player.model.to(device)
#player.targ_model = copy.deepcopy(player.model)
player.model.train()
#player.targ_model.eval()
player.eps_len += 2
while True:
player.model.load_state_dict(shared_model.state_dict())
#player.targ_model.load_state_dict(targ_shared.state_dict())
if player.done:
player.cx = torch.zeros(1, 512).to(device)
player.hx = torch.zeros(1, 512).to(device)
#player.targ_cx = copy.deepcopy(player.cx).detach()
#player.targ_hx = copy.deepcopy(player.hx).detach()
else:
player.cx = player.cx.detach()
player.hx = player.hx.detach()
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).to(torch.float32)
player.state = player.state.to(device)
#alpha = player.model.log_alpha.exp().detach()
alpha = .01
#alpha = 0
x_R = torch.zeros(1, 1)
if not player.done:
with torch.no_grad():
action, value, logit, q_value, _ = player.model(
(player.state.unsqueeze(0), (player.hx, player.cx)))
x_R = q_value[1].detach() - alpha * F.log_softmax(
logit, -1).gather(-1, action)
x_R = x_R.to(device)
policy_loss = 0
adv_gae_loss = 0
for i in reversed(range(len(player.rewards))):
x_R = args.gamma * x_R + player.rewards[i]
adv_gae_loss = adv_gae_loss + (player.tra_adv_gae[i][1] -
x_R.detach()).pow(2) * .5
#policy_loss = policy_loss - player.log_probs[i] * player.tra_adv_gae[i][0].detach() + alpha * player.log_probs[i] * player.log_probs[i].detach()
policy_loss = policy_loss - (F.softmax(
player.values[i], -1) * player.tra_adv_gae[i][0].detach()).sum(
-1) - alpha * player.entropies[i].unsqueeze(-1)
#policy_loss = policy_loss - player.log_probs[i] * (x_R - (F.softmax(player.values[i], -1) *
# player.tra_adv_gae[i][0]).sum(-1) - alpha * player.entropies[i]).detach() + alpha * player.log_probs[i] * player.log_probs[i].detach()
#prob = F.softmax(player.values[i], -1)
#ent_alpha = alpha * player.entropies[i].unsqueeze(-1)
#advs = (player.tra_adv_gae[i][0] -
# ((player.tra_adv_gae[i][0] * prob).sum(-1, True) +
# ent_alpha)).detach()
#policy_loss = policy_loss - (prob * advs).sum(-1) - ent_alpha
x_R = x_R - alpha * player.log_probs[i].detach()
player.model.zero_grad()
(policy_loss + .5 * adv_gae_loss).backward(retain_graph=False)
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
with shared_counter.get_lock():
shared_counter.value += len(player.rewards)
if shared_counter.value > args.interact_steps:
break
def train(rank, args, shared_model, optimizer, env_conf):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = Environment() # 創建環境
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
# env.seed(args.seed + rank)
player = Agent(None, env, args, None) # 創建代理人
player.gpu_id = gpu_id
num_actions = env.get_num_actions()
player.model = A3Clstm(
Config.STACKED_FRAMES, # A3C模型
num_actions)
player.state, available = player.env.reset() # 初始環境
player.state = torch.from_numpy(player.state).float()
player.available = torch.from_numpy(available).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.available = player.available.cuda()
player.model.train() # 訓練模式
player.eps_len += 1
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict()) # 更新網路
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, 512).cuda())
player.hx = Variable(torch.zeros(1, 512).cuda())
else:
player.cx = Variable(torch.zeros(1, 512))
player.hx = Variable(torch.zeros(1, 512)) # 完成一次訓練 初始化LSTM
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps): # T-max = 20
player.action_train()
if player.done:
break
if player.done:
state, available = player.env.reset()
player.state = torch.from_numpy(state).float()
player.available = torch.from_numpy(available).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.available = player.available.cuda()
R = torch.zeros(1, 1) # if done : R_t-max = 0
if not player.done:
value, _, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data # R_t-max = V(s)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
player.model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train_rollout(self, total_step):
storage = Storage(self.episode_C['rollout_length'])
state = self.env._copy_state(*self.state)
step_times = []
# Sync.
self.gnn.load_state_dict(self.shared_gnn.state_dict())
for rollout_step in range(self.episode_C['rollout_length']):
start_step_time = time.time()
prediction = self.env.propagate(self.gnn, [state])
action = prediction['a'].cpu().numpy()[0]
next_state, reward, done, achieved_goal = self.env.step(action, self.ep_step, state)
self.ep_step += 1
if done:
# Sync local model with shared model at start of each ep
self.gnn.load_state_dict(self.shared_gnn.state_dict())
self.ep_step = 0
storage.add(prediction)
storage.add({'r': tensor(reward, self.device).unsqueeze(-1).unsqueeze(-1),
'm': tensor(1 - done, self.device).unsqueeze(-1).unsqueeze(-1),
's': state})
state = self.env._copy_state(*next_state)
total_step += 1
end_step_time = time.time()
step_times.append(end_step_time - start_step_time)
self.state = self.env._copy_state(*state)
prediction = self.env.propagate(self.gnn, [state])
storage.add(prediction)
storage.placeholder()
advantages = tensor(np.zeros((1, 1)), self.device)
returns = prediction['v'].detach()
for i in reversed(range(self.episode_C['rollout_length'])):
# Disc. Return
returns = storage.r[i] + self.agent_C['discount'] * storage.m[i] * returns
# GAE
td_error = storage.r[i] + self.agent_C['discount'] * storage.m[i] * storage.v[i + 1] - storage.v[i]
advantages = advantages * self.agent_C['gae_tau'] * self.agent_C['discount'] * storage.m[i] + td_error
storage.adv[i] = advantages.detach()
storage.ret[i] = returns.detach()
# print(returns.shape, td_error.shape, advantages.shape, storage.adv[-1].shape, storage.ret[-1].shape)
actions, log_probs_old, returns, advantages = storage.cat(['a', 'log_pi_a', 'ret', 'adv'])
states = [storage.s[i] for i in range(storage.size)]
actions = actions.detach()
log_probs_old = log_probs_old.detach()
advantages = (advantages - advantages.mean()) / advantages.std()
# Train
self.gnn.train()
batch_times = []
train_pred_times = []
for _ in range(self.agent_C['optimization_epochs']):
# Sync. at start of each epoch
self.gnn.load_state_dict(self.shared_gnn.state_dict())
sampler = random_sample(np.arange(len(states)), self.agent_C['minibatch_size'])
for batch_indices in sampler:
start_batch_time = time.time()
batch_indices_tensor = tensor(batch_indices, self.device).long()
# Important Node: these are tensors but dont have a grad
sampled_states = [states[i] for i in batch_indices]
sampled_actions = actions[batch_indices_tensor]
sampled_log_probs_old = log_probs_old[batch_indices_tensor]
sampled_returns = returns[batch_indices_tensor]
sampled_advantages = advantages[batch_indices_tensor]
start_pred_time = time.time()
prediction = self.env.propagate(self.gnn, sampled_states, sampled_actions)
end_pred_time = time.time()
train_pred_times.append(end_pred_time - start_pred_time)
# Calc. Loss
ratio = (prediction['log_pi_a'] - sampled_log_probs_old).exp()
obj = ratio * sampled_advantages
obj_clipped = ratio.clamp(1.0 - self.agent_C['ppo_ratio_clip'],
1.0 + self.agent_C['ppo_ratio_clip']) * sampled_advantages
# policy loss and value loss are scalars
policy_loss = -torch.min(obj, obj_clipped).mean() - self.agent_C['entropy_weight'] * prediction['ent'].mean()
value_loss = self.agent_C['value_loss_coef'] * (sampled_returns - prediction['v']).pow(2).mean()
self.opt.zero_grad()
(policy_loss + value_loss).backward()
if self.agent_C['clip_grads']:
nn.utils.clip_grad_norm_(self.gnn.parameters(), self.agent_C['gradient_clip'])
ensure_shared_grads(self.gnn, self.shared_gnn)
self.opt.step()
end_batch_time = time.time()
batch_times.append(end_batch_time - start_batch_time)
self.gnn.eval()
return total_step, np.array(step_times).mean(), np.array(batch_times).mean(), np.array(train_pred_times).mean()
def trainac(rank, args, shared_model, optimizer, env_conf):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = OC_env(args.env)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = ACAgent(None, env, args, None)
player.gpu_id = gpu_id
player.model = ACModel(player.env.observation_space.shape[0],
player.env.action_space, args.options, args.width)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
threshold = 0
EnvNumSteps = 0
reward_mean = 0.
while True:
if EnvNumSteps > threshold:
threshold += 5000
print("thread:", rank, "steps:", EnvNumSteps)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
for step in range(args.num_steps):
EnvNumSteps += 1
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
q, logit = player.model(Variable(player.state))
v = q.max(-1)[0]
R = v.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = torch.zeros(1, 1)
value_loss = torch.zeros(1, 1)
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
thesize = len(player.rewards)
reward_sum = sum(player.rewards)
reward_mean = reward_mean + (reward_sum -
thesize * reward_mean) / EnvNumSteps
for i in reversed(range(len(player.rewards))):
before = R
R = args.gamma * R + player.rewards[i]
difference = R - player.qs[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * difference.pow(2)
policy_loss = policy_loss - player.log_probs[i] * Variable(
advantage.data) - 0.1 * player.entropies[i]
player.model.zero_grad()
(policy_loss.sum() + 0.5 * value_loss.sum()).backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
if str(rank) == "1":
fullname = args.save_model_dir + args.env + str(rank) + ".torch"
tmpname = args.save_model_dir + args.env + str(rank) + ".tmp"
torch.save(optimizer.state_dict(),
tmpname) #optimizer.state_dict()
os.rename(tmpname, fullname)
def train(rank, args, shared_model, optimizer, env_conf, num_tau_samples=32, num_tau_prime_samples=32, kappa=1.0, num_quantiles=32):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(
shared_model.parameters(), lr=args.lr, amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, 512).cuda())
player.hx = Variable(torch.zeros(1, 512).cuda())
else:
player.cx = Variable(torch.zeros(1, 512))
player.hx = Variable(torch.zeros(1, 512))
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1,num_tau_prime_samples)
if not player.done:
logit, _, _ = player.model((Variable(
player.state.unsqueeze(0)), (player.hx, player.cx)))
q_vals = torch.mean(logit,0)
_, action = torch.max(q_vals,0)
logit, _, _ = player.model((Variable(player.state.unsqueeze(0)),
(player.hx, player.cx)))
R = logit[:,action]
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
#R = R.detach()
R = Variable(R)
value_loss = 0
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R.repeat(num_tau_samples,1) - player.logits_array[i].repeat(1, num_tau_prime_samples)
#print("Ad: ",advantage)
loss = (torch.abs(advantage) <= kappa).float() * 0.5 * advantage ** 2
#print("loss: ",loss.sum(0).sum(0), loss)
loss += (torch.abs(advantage) > kappa).float() * kappa * (torch.abs(advantage) - 0.5 * kappa)
#print("loss: ",loss.sum(0).sum(0), loss)
step_loss = torch.abs(player.quantiles_array[i].cuda() - (advantage.detach()<0).float()) * loss/kappa
value_loss += step_loss.sum(0).mean(0)
player.model.zero_grad()
value_loss.backward()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer, optimizer_r, env_conf, lock,
counter):
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = [
Variable(torch.zeros(1, 512).cuda()),
Variable(torch.zeros(1, 512).cuda())
]
player.hx = [
Variable(torch.zeros(1, 512).cuda()),
Variable(torch.zeros(1, 512).cuda())
]
else:
player.cx = [
Variable(torch.zeros(1, 512)),
Variable(torch.zeros(1, 512))
]
player.hx = [
Variable(torch.zeros(1, 512)),
Variable(torch.zeros(1, 512))
]
else:
player.cx = [
Variable(player.cx[0].data),
Variable(player.cx[1].data)
]
player.hx = [
Variable(player.hx[0].data),
Variable(player.cx[1].data)
]
# 测试rnet的更新有没有影响到这里
# ps = list(player.model.r_net.named_parameters())
# n, v = ps[6]
# print(v.sum())
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
value, _, _, _ = player.model(
(Variable(player.state.unsqueeze(0)),
(player.hx[0], player.cx[0]), (player.hx[1], player.cx[1])))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
with lock:
counter.value += 1
# rnet
player.model.r_net.zero_grad()
(args.actor_weight * policy_loss +
(1 - args.actor_weight) * value_loss).backward(retain_graph=True)
ensure_shared_grads(player.model.r_net,
shared_model.r_net,
gpu=gpu_id >= 0)
optimizer_r.step()
player.model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
player.model.r_net.zero_grad()
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer, env_conf):
torch.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(), lr=args.lr)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.model = A3Clstm(
player.env.observation_space.shape[0], player.env.action_space)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
player.model.train()
while True:
player.model.load_state_dict(shared_model.state_dict())
for step in range(args.num_steps):
player.action_train()
if args.count_lives:
player.check_state()
if player.done:
break
if player.done:
player.eps_len = 0
player.current_life = 0
state = player.env.reset()
player.state = torch.from_numpy(state).float()
R = torch.zeros(1, 1)
if not player.done:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
R = Variable(R)
gae = torch.zeros(1, 1)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
optimizer.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
torch.nn.utils.clip_grad_norm(player.model.parameters(), 40)
ensure_shared_grads(player.model, shared_model)
optimizer.step()
player.clear_actions()
def train_func(rank,
args,
shared_model,
optimizer,
env_conf,
datasets=None,
shared_dict=None):
if args.deploy:
return
ptitle('Train {0}'.format(rank))
print('Start training agent: ', rank)
if rank == 0:
logger = Logger(args.log_dir[:-1] + '_losses/')
train_step = 0
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
env_conf["env_gpu"] = gpu_id
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
raw_list, gt_lbl_list = datasets
env = EM_env(raw_list,
env_conf,
type="train",
gt_lbl_list=gt_lbl_list,
seed=args.seed + rank)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = get_model(args,
args.model,
env.observation_space.shape,
args.features,
atrous_rates=args.atr_rate,
num_actions=2,
split=args.data_channel,
gpu_id=gpu_id,
multi=args.multi)
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
if rank == 0:
eps_reward = 0
pinned_eps_reward = 0
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
player.eps_len = 0
if rank == 0:
if train_step % args.train_log_period == 0 and train_step > 0:
print("train: step", train_step, "\teps_reward",
eps_reward)
if train_step > 0:
pinned_eps_reward = player.env.sum_reward.mean()
eps_reward = 0
if args.lstm_feats:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx, player.hx = player.model.lstm.init_hidden(
batch_size=1, use_cuda=True)
else:
player.cx, player.hx = player.model.lstm.init_hidden(
batch_size=1, use_cuda=False)
elif args.lstm_feats:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
if rank < args.lbl_agents:
player.action_train(use_lbl=True)
else:
player.action_train()
if rank == 0:
eps_reward = player.env.sum_reward.mean()
if player.done:
break
if player.done:
state = player.env.reset(player.model, gpu_id)
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
if "3D" in args.data:
R = torch.zeros(1, 1, env_conf["size"][0], env_conf["size"][1],
env_conf["size"][2])
else:
R = torch.zeros(1, 1, env_conf["size"][0], env_conf["size"][1])
if args.lowres:
R = torch.zeros(1, 1, env_conf["size"][0] // 2,
env_conf["size"][1] // 2)
if not player.done:
if args.lstm_feats:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx,
player.cx)))
else:
value, _ = player.model(Variable(player.state.unsqueeze(0)))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
if "3D" in args.data:
gae = torch.zeros(1, 1, env_conf["size"][0], env_conf["size"][1],
env_conf["size"][2])
else:
gae = torch.zeros(1, 1, env_conf["size"][0], env_conf["size"][1])
if args.rew_drop:
keep_map = torch.tensor(player.env.keep_map)
if args.lowres:
gae = torch.zeros(1, 1, env_conf["size"][0] // 2,
env_conf["size"][1] // 2)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
if args.rew_drop:
keep_map = keep_map.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
reward_i = torch.tensor(player.rewards[i]).cuda()
else:
reward_i = torch.tensor(player.rewards[i])
R = args.gamma * R + reward_i
if args.rew_drop:
advantage = R - player.values[i]
value_loss = value_loss + (0.5 * advantage * advantage *
keep_map).mean()
delta_t = player.values[
i + 1].data * args.gamma + reward_i - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
else:
advantage = R - player.values[i]
value_loss = value_loss + (0.5 * advantage * advantage).mean()
delta_t = player.values[
i + 1].data * args.gamma + reward_i - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
if args.noisy:
policy_loss = policy_loss - \
(player.log_probs[i] * Variable(gae)).mean ()
else:
if args.rew_drop:
policy_loss = policy_loss - \
(player.log_probs[i] * Variable(gae) * keep_map).mean () - \
(args.entropy_alpha * player.entropies[i] * keep_map).mean ()
else:
policy_loss = policy_loss - \
(player.log_probs[i] * Variable(gae)).mean () - \
(args.entropy_alpha * player.entropies[i]).mean ()
player.model.zero_grad()
sum_loss = (policy_loss + value_loss)
curtime = time.time()
# print ("backward curtime:", curtime)
sum_loss.backward()
# print ("backward done", time.time () - curtime)
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
curtime = time.time()
# print ("optim curtime:", curtime)
optimizer.step()
# print ("optim done", time.time () - curtime)
player.clear_actions()
if args.wctrl == "s2m":
player.env.config["spl_w"] = shared_dict["spl_w"]
player.env.config["mer_w"] = shared_dict["mer_w"]
if rank == 0:
train_step += 1
if train_step % args.log_period == 0 and train_step > 0:
log_info = {
'train: value_loss': value_loss,
'train: policy_loss': policy_loss,
'train: eps reward': pinned_eps_reward,
}
if "EX" in args.model:
log_info["cell_prob_loss"] = cell_prob_loss
for tag, value in log_info.items():
logger.scalar_summary(tag, value, train_step)
def train(rank, args, shared_model, optimizer, env_conf):
start_time = time.time()
ptitle('Training Agent: {}'.format(rank))
#log = {}
#setup_logger('{}_train_log'.format(args.env), r'{0}{1}_train_log'.format(
# args.log_dir, args.env))
#log['{}_train_log'.format(args.env)] = logging.getLogger(
# '{}_train_log'.format(args.env))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
if 'micropolis' in args.env.lower():
env = micropolis_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
if 'micropolis' in args.env.lower():
modelInit = getattr(model, args.design_head)
player.model = modelInit(player.env.observation_space.shape[0],
player.env.action_space,
player.env.env.env.MAP_X)
player.lstm_sizes = player.model.getMemorySizes()
else:
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
lstm_size = 512
if 'micropolis' in args.env.lower():
if 'arcade' not in args.env.lower():
lstm_size = (1, 16, env.env.env.MAP_X, env.env.env.MAP_Y)
player.lstm_size = lstm_size
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
log_counter = 0
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
num_lstm_layers = len(player.lstm_sizes)
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = [
Variable(torch.zeros(player.lstm_sizes[i]).cuda())
for i in range(num_lstm_layers)
]
player.hx = [
Variable(torch.zeros(player.lstm_sizes[i]).cuda())
for i in range(num_lstm_layers)
]
else:
player.cx = [
Variable(torch.zeros(lstm_sizes[i]))
for i in range(num_lstm_layers)
]
player.hx = [
Variable(torch.zeros(lstm_sizes[i]))
for i in range(num_lstm_layers)
]
else:
player.cx = [
Variable(player.cx[i].data) for i in range(num_lstm_layers)
]
player.hx = [
Variable(player.hx[i].data) for i in range(num_lstm_layers)
]
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if args.randomize_exploration:
player.certainty = np.random.uniform(0.5, 1.5)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
values, logit, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
if values.size()[1] == 1:
value = values
else:
prob = torch.nn.functional.softmax(logit, dim=1)
action = prob.multinomial(1).data
value = values[0][action]
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = torch.zeros(1, 1).cuda()
R = Variable(R).cuda()
else:
R = Variable(R)
player.values.append(R)
policy_loss = 0
value_loss = 0
for i in reversed(range(len(player.rewards))):
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.rewards[i] = torch.Tensor([player.rewards[i]
]).cuda()
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = Variable(gae.cuda())
else:
gae = Variable(gae)
policy_loss = policy_loss - \
player.log_probs[i] * Variable(gae) - 0.01 * player.entropies[i]
#if log_counter % 10 == 0:
# log['{}_train_log'.format(args.env)].info(
# "Time {0}, reward {1}, policy loss {2}, value loss {3}, entropy {4}".
# format(time.strftime("%Hh %Mm %Ss", time.gmtime(time.time() - start_time)),
# '{:9.2e}'.format(float(sum(player.rewards) / len(player.rewards))),
# '{:9.2e}'.format(float(policy_loss.data.item())),
# '{:9.2e}'.format(float(value_loss.data.item())),
# '{:10.8e}'.format(float(sum(player.entropies)))))
#log_counter += 1
optimizer.zero_grad()
a3c = args.lmbda * (policy_loss + 0.5 * value_loss)
a3c.backward()
torch.nn.utils.clip_grad_norm_(player.model.parameters(), 40)
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer, env_conf):
ptitle('Training Agent: {}'.format(rank))
print("prank:", rank, "os.pid:", os.getpid())
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = AllowBacktracking(
make_local_env(env_conf['game'],
env_conf['level'],
stack=False,
scale_rew=False))
print("Got a local env; obs space:", env.observation_space)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(),
lr=args.lr,
amsgrad=args.amsgrad)
env.seed(args.seed + rank)
player = Agent(None, env, args, None)
player.gpu_id = gpu_id
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space)
player.state = player.env.reset()
print("player.state.shape:", player.state.shape)
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
player.model.train()
player.eps_len += 2
while True:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, 512).cuda())
player.hx = Variable(torch.zeros(1, 512).cuda())
else:
player.cx = Variable(torch.zeros(1, 512))
player.hx = Variable(torch.zeros(1, 512))
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player.action_train()
if player.done:
break
if player.done:
# if player.info['ale.lives'] == 0 or player.max_length:
# player.eps_len = 0
state = player.env.reset()
player.eps_len += 2
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
R = torch.zeros(1, 1)
if not player.done:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
player.model.zero_grad()
(policy_loss + 0.5 * value_loss).backward()
torch.nn.utils.clip_grad_norm(player.model.parameters(), 100.0)
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
player.clear_actions()
def train(rank, args, shared_model, optimizer, env_conf, emb, bi_grams, instructions):
# Changes the process name
ptitle('Training Agent: {}'.format(rank))
gpu_id = args.gpu_ids[rank % len(args.gpu_ids)]
torch.manual_seed(args.seed + rank)
# Define special vectors
eos_vector = emb.get_vector("<eos>")
oov_vector = emb.get_vector("<oov>")
if gpu_id >= 0:
torch.cuda.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf, args)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(
shared_model.parameters(), lr=args.lr, amsgrad=args.amsgrad)
env.seed(args.seed + rank)
# Create agent
player = Agent(None, env, args, None, emb)
player.gpu_id = gpu_id
# Create DNN model for the agent
player.model = A3Clstm(player.env.observation_space.shape[0],
player.env.action_space, emb)
# Set env and move to gpu
player.state = player.env.reset()
player.state = torch.from_numpy(player.state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
player.model = player.model.cuda()
# Set model to "training" mode. Not doing anything but is a good practice to add
player.model.train()
# Start iteration
player.eps_len += 2
_counter = 0
while True:
# Loading param values from shared model
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.model.load_state_dict(shared_model.state_dict())
else:
player.model.load_state_dict(shared_model.state_dict())
# Reset LSTM state when episode ends
if player.done:
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.cx = Variable(torch.zeros(1, args.lstm_size).cuda())
player.hx = Variable(torch.zeros(1, args.lstm_size).cuda())
else:
player.cx = Variable(torch.zeros(1, args.lstm_size))
player.hx = Variable(torch.zeros(1, args.lstm_size))
# If not ended, save current state value
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
# Make a step and record observations. Repeat until num_steps reached or game is over.
for step in range(args.num_steps):
player.action_train()
if player.done:
break
# If episode finished before args.num_steps is reached, reset environment
if player.done:
state = player.env.reset()
player.state = torch.from_numpy(state).float()
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
player.state = player.state.cuda()
# If episode not finished after args.num_steps:
# Estimates value function of current state
R = torch.zeros(1, 1)
if not player.done:
_, value, _, _ = player.model((Variable(player.state.unsqueeze(0)),
(player.hx, player.cx)))
R = value.data
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
R = R.cuda()
# Append reward for the final time step
player.values.append(Variable(R))
# Initialise loss accumulator
policy_loss = 0
value_loss = 0
language_loss = 0
gae = torch.zeros(1, 1)
if gpu_id >= 0:
with torch.cuda.device(gpu_id):
gae = gae.cuda()
R = Variable(R)
# Accumulate the losses
for i in reversed(range(len(player.rewards))):
# Calculating language loss
if args.use_language:
# Calculating language loss
# Get action of a time step
a = np.argmax(player.action_logits[i].detach().cpu().numpy())
# Get produced vectors of the time step
produced_logits = player.produced_logits[i]
# print(produced_vectors)
# Get target vectors of the time step (an instruction corresponding to the least cost)
action_instructions = instructions[a]
# Sample a few from the set
for _ in range(10):
idx = random.randrange(0, len(action_instructions))
instruction = action_instructions[idx]
target_words = instruction.split()
for pos, target_word in enumerate(target_words):
target_class = torch.tensor(emb.get_index(target_word)).cuda()
produced_logit = produced_logits[pos]
# Cross_entropy combines log-softmax and nll
# Here procuded_vec is one-hot while target is an integer
language_loss += torch.nn.functional.cross_entropy(produced_logit, target_class.unsqueeze(0))
if target_word == '<eos>':
break
# Calculate other losses
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * \
player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - \
player.log_probs[i] * \
Variable(gae) - 0.01 * player.entropies[i]
# Initialise grad accumulator
player.model.zero_grad()
# Calculate grad and update
if args.use_language:
(policy_loss + 0.5 * value_loss + 0.1 * 0.01* language_loss).backward()
else:
(policy_loss + 0.5 * value_loss).backward()
"""
# (policy_loss + 0.5 * value_loss).backward()
print("****************")
print(policy_loss)
print(value_loss)
# """
if args.use_language and _counter % 10 == 0:
print("****************")
#print(policy_loss)
#print(value_loss)
print("language loss", language_loss)
_counter += 1
# Copying over the parameters to shared model
ensure_shared_grads(player.model, shared_model, gpu=gpu_id >= 0)
optimizer.step()
# Clean agent observations
player.clear_actions()
def train(rank, args, shared_model, optimizer, env_conf):
torch.manual_seed(args.seed + rank)
env = atari_env(args.env, env_conf)
model = A3Clstm(env.observation_space.shape[0], env.action_space)
if optimizer is None:
if args.optimizer == 'RMSprop':
optimizer = optim.RMSprop(shared_model.parameters(), lr=args.lr)
if args.optimizer == 'Adam':
optimizer = optim.Adam(shared_model.parameters(), lr=args.lr)
env.seed(args.seed + rank)
state = env.reset()
player = Agent(model, env, args, state)
player.state = torch.from_numpy(state).float()
player.model.train()
epoch = 0
while True:
player.model.load_state_dict(shared_model.state_dict())
if player.done:
player.cx = Variable(torch.zeros(1, 512))
player.hx = Variable(torch.zeros(1, 512))
if player.starter:
player = player_start(player, train=True)
else:
player.cx = Variable(player.cx.data)
player.hx = Variable(player.hx.data)
for step in range(args.num_steps):
player = player_act(player, train=True)
if player.done:
break
if player.current_life > player.info['ale.lives']:
player.flag = True
player.current_life = player.info['ale.lives']
else:
player.current_life = player.info['ale.lives']
player.flag = False
if args.count_lives:
if player.flag:
player.done = True
break
if player.starter and player.flag:
player = player_start(player, train=True)
if player.done:
break
if player.done:
player.eps_len = 0
player.current_life = 0
state = player.env.reset()
player.state = torch.from_numpy(state).float()
player.flag = False
R = torch.zeros(1, 1)
if not player.done:
value, _, _ = player.model(
(Variable(player.state.unsqueeze(0)), (player.hx, player.cx)))
R = value.data
player.values.append(Variable(R))
policy_loss = 0
value_loss = 0
R = Variable(R)
gae = torch.zeros(1, 1)
for i in reversed(range(len(player.rewards))):
R = args.gamma * R + player.rewards[i]
advantage = R - player.values[i]
value_loss += 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = player.rewards[i] + args.gamma * player.values[i + 1].data - player.values[i].data
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - player.log_probs[i] * Variable(gae) - 0.01 * player.entropies[i]
optimizer.zero_grad()
(policy_loss + value_loss).backward()
ensure_shared_grads(player.model, shared_model)
optimizer.step()
player.values = []
player.log_probs = []
player.rewards = []
player.entropies = []
def train_worker(args, shared_model, total_steps, optimizer, lock):
env = make_env(args)
args = args.train
model = ActorCritic(env.observation_space.shape, env.action_space.n)
model.train()
state = env.reset()
state = torch.FloatTensor(state)
while True:
model.load_state_dict(shared_model.state_dict())
model.detach_hidden()
values = []
log_probs = []
rewards = []
entropies = []
for step in range(args.update_agent_frequency):
value, logit = model(state.unsqueeze(0))
prob = F.softmax(logit, dim=-1)
log_prob = F.log_softmax(logit, dim=-1)
entropy = -(log_prob * prob).sum(1, keepdim=True)
entropies.append(entropy)
action = prob.multinomial(num_samples=1).detach()
log_prob = log_prob.gather(1, action)
state, reward, done, _ = env.step(action.numpy())
with total_steps.get_lock():
total_steps.value += 1
if done:
state = env.reset()
model.reset_hidden()
state = torch.FloatTensor(state)
values.append(value)
log_probs.append(log_prob)
rewards.append(reward)
if done:
break
R = torch.zeros(1, 1)
if not done:
value, _ = model(state.unsqueeze(0))
R = value.detach()
values.append(R)
policy_loss = 0
value_loss = 0
gae = torch.zeros(1, 1)
for i in reversed(range(len(rewards))):
R = args.gamma * R + rewards[i]
advantage = R - values[i]
value_loss = value_loss + 0.5 * advantage.pow(2)
# Generalized Advantage Estimataion
delta_t = rewards[i] + args.gamma * values[i + 1] - values[i]
gae = gae * args.gamma * args.tau + delta_t
policy_loss = policy_loss - log_probs[i] * gae.detach(
) - args.entropy_weight * entropies[i]
optimizer.zero_grad()
(policy_loss + args.value_weight * value_loss).backward()
torch.nn.utils.clip_grad_norm_(model.parameters(), args.max_grad_norm)
with lock:
ensure_shared_grads(model, shared_model)
optimizer.step()
