def train_model(model, device, train_loader, optimizer, total_num_steps,
logger, net_output_info, checkpoint_dir):
try:
model.train()
if args.tensorboard:
logger.network_conv_summary(model, total_num_steps)
data_iter = iter(train_loader)
for batch_idx in tqdm.tqdm(range(NUM_BATCHES_PER_EPOCH)):
data = next(data_iter)
labels = {key: val.to(device) for key, val in data.items()}
labels["surface_normals"] = pt_util.depth_to_surface_normals(
labels["depth"])
data = labels["rgb"].detach()
_, output, class_pred = model.forward(data, True)
loss, loss_val, visual_loss_dict = optimizers.get_visual_loss(
output, labels, net_output_info)
object_loss = 0
if "class_label" in labels:
object_loss = optimizers.get_object_existence_loss(
class_pred, labels["class_label"])
loss = loss + object_loss
object_loss = object_loss.item()
optimizer.zero_grad()
loss.backward()
optimizer.step()
if DEBUG:
draw_outputs(output, labels, "train")
total_num_steps += 1
if not args.no_weight_update and batch_idx % args.log_interval == 0:
if args.tensorboard:
log_dict = {"loss/visual/0_total": loss.item()}
if "class_label" in labels:
log_dict["loss/visual/object_loss"] = object_loss
for key, val in visual_loss_dict.items():
log_dict["loss/visual/" + key] = val
logger.dict_log(log_dict, step=total_num_steps)
if args.tensorboard:
if batch_idx % 100 == 0:
logger.network_variable_summary(model, total_num_steps)
if args.save_checkpoints and not args.no_weight_update:
pt_util.save(model,
checkpoint_dir,
num_to_keep=5,
iteration=total_num_steps)
return total_num_steps
except Exception as e:
import traceback
traceback.print_exc()
if args.save_checkpoints and not args.no_weight_update:
pt_util.save(model,
checkpoint_dir,
num_to_keep=-1,
iteration=total_num_steps)
raise e
def evaluate_model(model, device, test_loader, total_num_steps, logger,
net_output_info):
model.eval()
loss_val_total = 0
object_loss_total = 0
test_loss_dict = None
n_its = 0
with torch.no_grad():
data_iter = iter(test_loader)
for batch_idx in tqdm.tqdm(range(NUM_TEST_BATCHES_PER_EPOCH)):
data = next(data_iter)
n_its += 1
labels = {key: val.to(device) for key, val in data.items()}
labels["surface_normals"] = pt_util.depth_to_surface_normals(
labels["depth"])
data = labels["rgb"]
_, output, class_pred = model.forward(data, True)
loss, loss_val, visual_loss_dict = optimizers.get_visual_loss(
output, labels, net_output_info)
object_loss = 0
if "class_label" in labels:
object_loss = optimizers.get_object_existence_loss(
class_pred, labels["class_label"])
loss = loss + object_loss
object_loss = object_loss.item()
if DEBUG:
draw_outputs(output, labels, "eval")
if test_loss_dict is None:
test_loss_dict = visual_loss_dict
else:
for key in test_loss_dict:
test_loss_dict[key] += visual_loss_dict[key]
object_loss_total += object_loss
loss_val_total += loss.item()
loss_val_total /= n_its
object_loss_total /= n_its
for key in test_loss_dict:
test_loss_dict[key] /= n_its
if args.tensorboard:
log_dict = {"loss/visual/0_total": loss_val_total}
if "class_label" in labels:
log_dict["loss/visual/object_loss"] = object_loss_total
for key, val in visual_loss_dict.items():
log_dict["loss/visual/" + key] = val
logger.dict_log(log_dict, step=total_num_steps)
def train_model(self):
episode_rewards = deque(maxlen=10)
current_episode_rewards = np.zeros(self.shell_args.num_processes)
episode_lengths = deque(maxlen=10)
current_episode_lengths = np.zeros(self.shell_args.num_processes)
current_rewards = np.zeros(self.shell_args.num_processes)
total_num_steps = self.start_iter
fps_timer = [time.time(), total_num_steps]
timers = np.zeros(3)
egomotion_loss = 0
video_frames = []
num_episodes = 0
# self.evaluate_model()
obs = self.envs.reset()
if self.compute_surface_normals:
obs["surface_normals"] = pt_util.depth_to_surface_normals(
obs["depth"].to(self.device))
obs["prev_action_one_hot"] = obs[
"prev_action_one_hot"][:, ACTION_SPACE].to(torch.float32)
if self.shell_args.algo == "supervised":
obs["best_next_action"] = pt_util.from_numpy(
obs["best_next_action"][:, ACTION_SPACE])
self.rollouts.copy_obs(obs, 0)
distances = pt_util.to_numpy_array(obs["goal_geodesic_distance"])
self.train_stats["start_geodesic_distance"][:] = distances
previous_visual_features = None
egomotion_pred = None
prev_action = None
prev_action_probs = None
num_updates = (int(self.shell_args.num_env_steps) //
self.shell_args.num_forward_rollout_steps
) // self.shell_args.num_processes
try:
for iter_count in range(num_updates):
if self.shell_args.tensorboard:
if iter_count % 500 == 0:
print("Logging conv summaries")
self.logger.network_conv_summary(
self.agent, total_num_steps)
elif iter_count % 100 == 0:
print("Logging variable summaries")
self.logger.network_variable_summary(
self.agent, total_num_steps)
if self.shell_args.use_linear_lr_decay:
# decrease learning rate linearly
update_linear_schedule(self.optimizer.optimizer,
iter_count, num_updates,
self.shell_args.lr)
if self.shell_args.algo == "ppo" and self.shell_args.use_linear_clip_decay:
self.optimizer.clip_param = self.shell_args.clip_param * (
1 - iter_count / float(num_updates))
if hasattr(self.agent.base, "enable_decoder"):
if self.shell_args.record_video:
self.agent.base.enable_decoder()
else:
self.agent.base.disable_decoder()
for step in range(self.shell_args.num_forward_rollout_steps):
with torch.no_grad():
start_t = time.time()
value, action, action_log_prob, recurrent_hidden_states = self.agent.act(
{
"images":
self.rollouts.obs[step],
"target_vector":
self.rollouts.additional_observations_dict[
"pointgoal"][step],
"prev_action_one_hot":
self.rollouts.additional_observations_dict[
"prev_action_one_hot"][step],
},
self.rollouts.recurrent_hidden_states[step],
self.rollouts.masks[step],
)
action_cpu = pt_util.to_numpy_array(action.squeeze(1))
translated_action_space = ACTION_SPACE[action_cpu]
if not self.shell_args.end_to_end:
self.rollouts.additional_observations_dict[
"visual_encoder_features"][
self.rollouts.step].copy_(
self.agent.base.visual_encoder_features
)
if self.shell_args.use_motion_loss:
if self.shell_args.record_video:
if previous_visual_features is not None:
egomotion_pred = self.agent.base.predict_egomotion(
self.agent.base.visual_features,
previous_visual_features)
previous_visual_features = self.agent.base.visual_features.detach(
)
timers[1] += time.time() - start_t
if self.shell_args.record_video:
# Copy so we don't mess with obs itself
draw_obs = OrderedDict()
for key, val in obs.items():
draw_obs[key] = pt_util.to_numpy_array(
val).copy()
best_next_action = draw_obs.pop(
"best_next_action", None)
if prev_action is not None:
draw_obs[
"action_taken"] = pt_util.to_numpy_array(
self.agent.last_dist.probs).copy()
draw_obs["action_taken"][:] = 0
draw_obs["action_taken"][
np.arange(self.shell_args.num_processes),
prev_action] = 1
draw_obs[
"action_taken_name"] = SIM_ACTION_TO_NAME[
ACTION_SPACE_TO_SIM_ACTION[
ACTION_SPACE[
prev_action.squeeze()]]]
draw_obs[
"action_prob"] = pt_util.to_numpy_array(
prev_action_probs).copy()
else:
draw_obs["action_taken"] = None
draw_obs[
"action_taken_name"] = SIM_ACTION_TO_NAME[
SimulatorActions.STOP]
draw_obs["action_prob"] = None
prev_action = action_cpu
prev_action_probs = self.agent.last_dist.probs.detach(
)
if (hasattr(self.agent.base, "decoder_outputs")
and self.agent.base.decoder_outputs
is not None):
min_channel = 0
for key, num_channels in self.agent.base.decoder_output_info:
outputs = self.agent.base.decoder_outputs[:,
min_channel:
min_channel
+
num_channels,
...]
draw_obs["output_" +
key] = pt_util.to_numpy_array(
outputs).copy()
min_channel += num_channels
draw_obs["rewards"] = current_rewards.copy()
draw_obs["step"] = current_episode_lengths.copy()
draw_obs["method"] = self.shell_args.method_name
if best_next_action is not None:
draw_obs["best_next_action"] = best_next_action
if self.shell_args.use_motion_loss:
if egomotion_pred is not None:
draw_obs[
"egomotion_pred"] = pt_util.to_numpy_array(
F.softmax(egomotion_pred,
dim=1)).copy()
else:
draw_obs["egomotion_pred"] = None
images, titles, normalize = draw_outputs.obs_to_images(
draw_obs)
if self.shell_args.algo == "supervised":
im_inds = [0, 2, 3, 1, 9, 6, 7, 8, 5, 4]
else:
im_inds = [0, 2, 3, 1, 6, 7, 8, 5]
height, width = images[0].shape[:2]
subplot_image = drawing.subplot(
images,
2,
5,
titles=titles,
normalize=normalize,
order=im_inds,
output_width=max(width, 320),
output_height=max(height, 320),
)
video_frames.append(subplot_image)
# save dists from previous step or else on reset they will be overwritten
distances = pt_util.to_numpy_array(
obs["goal_geodesic_distance"])
start_t = time.time()
obs, rewards, dones, infos = self.envs.step(
translated_action_space)
timers[0] += time.time() - start_t
obs["reward"] = rewards
if self.shell_args.algo == "supervised":
obs["best_next_action"] = pt_util.from_numpy(
obs["best_next_action"][:, ACTION_SPACE]).to(
torch.float32)
obs["prev_action_one_hot"] = obs[
"prev_action_one_hot"][:, ACTION_SPACE].to(
torch.float32)
rewards *= REWARD_SCALAR
rewards = np.clip(rewards, -10, 10)
if self.shell_args.record_video and not dones[0]:
obs["top_down_map"] = infos[0]["top_down_map"]
if self.compute_surface_normals:
obs["surface_normals"] = pt_util.depth_to_surface_normals(
obs["depth"].to(self.device))
current_rewards = pt_util.to_numpy_array(rewards)
current_episode_rewards += pt_util.to_numpy_array(
rewards).squeeze()
current_episode_lengths += 1
for ii, done_e in enumerate(dones):
if done_e:
num_episodes += 1
if self.shell_args.record_video:
final_rgb = draw_obs["rgb"].transpose(
0, 2, 3, 1).squeeze(0)
if self.shell_args.task == "pointnav":
if infos[ii]["spl"] > 0:
draw_obs[
"action_taken_name"] = "Stop. Success"
draw_obs["reward"] = [
self.configs[0].TASK.
SUCCESS_REWARD
]
final_rgb[:] = final_rgb * np.float32(
0.5) + np.tile(
np.array([0, 128, 0],
dtype=np.uint8),
(final_rgb.shape[0],
final_rgb.shape[1], 1),
)
else:
draw_obs[
"action_taken_name"] = "Timeout. Failed"
final_rgb[:] = final_rgb * np.float32(
0.5) + np.tile(
np.array([128, 0, 0],
dtype=np.uint8),
(final_rgb.shape[0],
final_rgb.shape[1], 1),
)
elif self.shell_args.task == "exploration" or self.shell_args.task == "flee":
draw_obs[
"action_taken_name"] = "End of episode."
final_rgb = final_rgb[np.newaxis,
...].transpose(
0, 3, 1, 2)
draw_obs["rgb"] = final_rgb
images, titles, normalize = draw_outputs.obs_to_images(
draw_obs)
im_inds = [0, 2, 3, 1, 6, 7, 8, 5]
height, width = images[0].shape[:2]
subplot_image = drawing.subplot(
images,
2,
5,
titles=titles,
normalize=normalize,
order=im_inds,
output_width=max(width, 320),
output_height=max(height, 320),
)
video_frames.extend(
[subplot_image] *
(self.configs[0].ENVIRONMENT.
MAX_EPISODE_STEPS + 30 -
len(video_frames)))
if "top_down_map" in infos[0]:
video_dir = os.path.join(
self.shell_args.log_prefix,
"videos")
if not os.path.exists(video_dir):
os.makedirs(video_dir)
im_path = os.path.join(
self.shell_args.log_prefix,
"videos", "total_steps_%d.png" %
total_num_steps)
from habitat.utils.visualizations import maps
import imageio
top_down_map = maps.colorize_topdown_map(
infos[0]["top_down_map"]["map"])
imageio.imsave(im_path, top_down_map)
images_to_video(
video_frames,
os.path.join(
self.shell_args.log_prefix,
"videos"),
"total_steps_%d" % total_num_steps,
)
video_frames = []
if self.shell_args.task == "pointnav":
print(
"FINISHED EPISODE %d Length %d Reward %.3f SPL %.4f"
% (
num_episodes,
current_episode_lengths[ii],
current_episode_rewards[ii],
infos[ii]["spl"],
))
self.train_stats["spl"][ii] = infos[ii][
"spl"]
self.train_stats["success"][
ii] = self.train_stats["spl"][ii] > 0
self.train_stats["end_geodesic_distance"][
ii] = (distances[ii] - self.configs[0].
SIMULATOR.FORWARD_STEP_SIZE)
self.train_stats[
"delta_geodesic_distance"][ii] = (
self.train_stats[
"start_geodesic_distance"][ii]
- self.train_stats[
"end_geodesic_distance"][ii])
self.train_stats["num_steps"][
ii] = current_episode_lengths[ii]
elif self.shell_args.task == "exploration":
print(
"FINISHED EPISODE %d Reward %.3f States Visited %d"
% (num_episodes,
current_episode_rewards[ii],
infos[ii]["visited_states"]))
self.train_stats["visited_states"][
ii] = infos[ii]["visited_states"]
elif self.shell_args.task == "flee":
print(
"FINISHED EPISODE %d Reward %.3f Distance from start %.4f"
% (num_episodes,
current_episode_rewards[ii],
infos[ii]["distance_from_start"]))
self.train_stats["distance_from_start"][
ii] = infos[ii]["distance_from_start"]
self.train_stats["num_episodes"][ii] += 1
self.train_stats["reward"][
ii] = current_episode_rewards[ii]
if self.shell_args.tensorboard:
log_dict = {
"single_episode/reward":
self.train_stats["reward"][ii]
}
if self.shell_args.task == "pointnav":
log_dict.update({
"single_episode/num_steps":
self.train_stats["num_steps"][ii],
"single_episode/spl":
self.train_stats["spl"][ii],
"single_episode/success":
self.train_stats["success"][ii],
"single_episode/start_geodesic_distance":
self.train_stats[
"start_geodesic_distance"][ii],
"single_episode/end_geodesic_distance":
self.train_stats[
"end_geodesic_distance"][ii],
"single_episode/delta_geodesic_distance":
self.train_stats[
"delta_geodesic_distance"][ii],
})
elif self.shell_args.task == "exploration":
log_dict[
"single_episode/visited_states"] = self.train_stats[
"visited_states"][ii]
elif self.shell_args.task == "flee":
log_dict[
"single_episode/distance_from_start"] = self.train_stats[
"distance_from_start"][ii]
self.logger.dict_log(
log_dict,
step=(total_num_steps +
self.shell_args.num_processes *
step + ii))
episode_rewards.append(
current_episode_rewards[ii])
current_episode_rewards[ii] = 0
episode_lengths.append(
current_episode_lengths[ii])
current_episode_lengths[ii] = 0
self.train_stats["start_geodesic_distance"][
ii] = obs["goal_geodesic_distance"][ii]
# If done then clean the history of observations.
masks = torch.FloatTensor([[0.0] if done_ else [1.0]
for done_ in dones])
bad_masks = torch.FloatTensor(
[[0.0]
if "bad_transition" in info.keys() else [1.0]
for info in infos])
self.rollouts.insert(obs, recurrent_hidden_states,
action, action_log_prob, value,
rewards, masks, bad_masks)
with torch.no_grad():
start_t = time.time()
next_value = self.agent.get_value(
{
"images":
self.rollouts.obs[-1],
"target_vector":
self.rollouts.
additional_observations_dict["pointgoal"][-1],
"prev_action_one_hot":
self.rollouts.additional_observations_dict[
"prev_action_one_hot"][-1],
},
self.rollouts.recurrent_hidden_states[-1],
self.rollouts.masks[-1],
).detach()
timers[1] += time.time() - start_t
self.rollouts.compute_returns(next_value,
self.shell_args.use_gae,
self.shell_args.gamma,
self.shell_args.tau)
if not self.shell_args.no_weight_update:
start_t = time.time()
if self.shell_args.algo == "supervised":
(
total_loss,
action_loss,
visual_loss_total,
visual_loss_dict,
egomotion_loss,
forward_model_loss,
) = self.optimizer.update(self.rollouts,
self.shell_args)
else:
(
total_loss,
value_loss,
action_loss,
dist_entropy,
visual_loss_total,
visual_loss_dict,
egomotion_loss,
forward_model_loss,
) = self.optimizer.update(self.rollouts,
self.shell_args)
timers[2] += time.time() - start_t
self.rollouts.after_update()
# save for every interval-th episode or for the last epoch
if iter_count % self.shell_args.save_interval == 0 or iter_count == num_updates - 1:
self.save_checkpoint(5, total_num_steps)
total_num_steps += self.shell_args.num_processes * self.shell_args.num_forward_rollout_steps
if not self.shell_args.no_weight_update and iter_count % self.shell_args.log_interval == 0:
log_dict = {}
if len(episode_rewards) > 1:
end = time.time()
nsteps = total_num_steps - fps_timer[1]
fps = int((total_num_steps - fps_timer[1]) /
(end - fps_timer[0]))
timers /= nsteps
env_spf = timers[0]
forward_spf = timers[1]
backward_spf = timers[2]
print((
"{} Updates {}, num timesteps {}, FPS {}, Env FPS "
"{}, \n Last {} training episodes: mean/median reward "
"{:.3f}/{:.3f}, min/max reward {:.3f}/{:.3f}\n"
).format(
datetime.datetime.now(),
iter_count,
total_num_steps,
fps,
int(1.0 / env_spf),
len(episode_rewards),
np.mean(episode_rewards),
np.median(episode_rewards),
np.min(episode_rewards),
np.max(episode_rewards),
))
if self.shell_args.tensorboard:
log_dict.update({
"stats/full_spf":
1.0 / (fps + 1e-10),
"stats/env_spf":
env_spf,
"stats/forward_spf":
forward_spf,
"stats/backward_spf":
backward_spf,
"stats/full_fps":
fps,
"stats/env_fps":
1.0 / (env_spf + 1e-10),
"stats/forward_fps":
1.0 / (forward_spf + 1e-10),
"stats/backward_fps":
1.0 / (backward_spf + 1e-10),
"episode/mean_rewards":
np.mean(episode_rewards),
"episode/median_rewards":
np.median(episode_rewards),
"episode/min_rewards":
np.min(episode_rewards),
"episode/max_rewards":
np.max(episode_rewards),
"episode/mean_lengths":
np.mean(episode_lengths),
"episode/median_lengths":
np.median(episode_lengths),
"episode/min_lengths":
np.min(episode_lengths),
"episode/max_lengths":
np.max(episode_lengths),
})
fps_timer[0] = time.time()
fps_timer[1] = total_num_steps
timers[:] = 0
if self.shell_args.tensorboard:
log_dict.update({
"loss/action":
action_loss,
"loss/0_total":
total_loss,
"loss/visual/0_total":
visual_loss_total,
"loss/exploration/egomotion":
egomotion_loss,
"loss/exploration/forward_model":
forward_model_loss,
})
if self.shell_args.algo != "supervised":
log_dict.update({
"loss/entropy": dist_entropy,
"loss/value": value_loss
})
for key, val in visual_loss_dict.items():
log_dict["loss/visual/" + key] = val
self.logger.dict_log(log_dict, step=total_num_steps)
if self.shell_args.eval_interval is not None and total_num_steps % self.shell_args.eval_interval < (
self.shell_args.num_processes *
self.shell_args.num_forward_rollout_steps):
self.save_checkpoint(-1, total_num_steps)
self.set_log_iter(total_num_steps)
self.evaluate_model()
# reset the env datasets
self.envs.unwrapped.call(
["switch_dataset"] * self.shell_args.num_processes,
[("train", )] * self.shell_args.num_processes)
obs = self.envs.reset()
if self.compute_surface_normals:
obs["surface_normals"] = pt_util.depth_to_surface_normals(
obs["depth"].to(self.device))
obs["prev_action_one_hot"] = obs[
"prev_action_one_hot"][:,
ACTION_SPACE].to(torch.float32)
if self.shell_args.algo == "supervised":
obs["best_next_action"] = pt_util.from_numpy(
obs["best_next_action"][:, ACTION_SPACE])
self.rollouts.copy_obs(obs, 0)
distances = pt_util.to_numpy_array(
obs["goal_geodesic_distance"])
self.train_stats["start_geodesic_distance"][:] = distances
previous_visual_features = None
egomotion_pred = None
prev_action = None
prev_action_probs = None
except:
# Catch all exceptions so a final save can be performed
import traceback
traceback.print_exc()
finally:
self.save_checkpoint(-1, total_num_steps)
def evaluate_model(self):
self.envs.unwrapped.call(["switch_dataset"] *
self.shell_args.num_processes,
[("val", )] * self.shell_args.num_processes)
if not os.path.exists(self.eval_dir):
os.makedirs(self.eval_dir)
try:
eval_net_file_name = sorted(
glob.glob(
os.path.join(self.shell_args.log_prefix,
self.shell_args.checkpoint_dirname, "*") +
"/*.pt"),
key=os.path.getmtime,
)[-1]
eval_net_file_name = (
self.shell_args.log_prefix.replace(os.sep, "_") + "_" +
"_".join(eval_net_file_name.split(os.sep)[-2:])[:-3])
except IndexError:
print("Warning, no weights found")
eval_net_file_name = "random_weights"
eval_output_file = open(
os.path.join(self.eval_dir, eval_net_file_name + ".csv"), "w")
print("Writing results to", eval_output_file.name)
# Save the evaled net for posterity
if self.shell_args.save_checkpoints:
save_model = self.agent
pt_util.save(
save_model,
os.path.join(self.shell_args.log_prefix,
self.shell_args.checkpoint_dirname,
"eval_weights"),
num_to_keep=-1,
iteration=self.log_iter,
)
print("Wrote model to file for safe keeping")
obs = self.envs.reset()
if self.compute_surface_normals:
obs["surface_normals"] = pt_util.depth_to_surface_normals(
obs["depth"].to(self.device))
obs["prev_action_one_hot"] = obs[
"prev_action_one_hot"][:, ACTION_SPACE].to(torch.float32)
recurrent_hidden_states = torch.zeros(
self.shell_args.num_processes,
self.agent.recurrent_hidden_state_size,
dtype=torch.float32,
device=self.device,
)
masks = torch.ones(self.shell_args.num_processes,
1,
dtype=torch.float32,
device=self.device)
episode_rewards = deque(maxlen=10)
current_episode_rewards = np.zeros(self.shell_args.num_processes)
episode_lengths = deque(maxlen=10)
current_episode_lengths = np.zeros(self.shell_args.num_processes)
total_num_steps = self.log_iter
fps_timer = [time.time(), total_num_steps]
timers = np.zeros(3)
num_episodes = 0
print("Config\n", self.configs[0])
# Initialize every time eval is run rather than just at the start
dataset_sizes = np.array(
[len(dataset.episodes) for dataset in self.eval_datasets])
eval_stats = dict(
episode_ids=[None for _ in range(self.shell_args.num_processes)],
num_episodes=np.zeros(self.shell_args.num_processes,
dtype=np.int32),
num_steps=np.zeros(self.shell_args.num_processes, dtype=np.int32),
reward=np.zeros(self.shell_args.num_processes, dtype=np.float32),
spl=np.zeros(self.shell_args.num_processes, dtype=np.float32),
visited_states=np.zeros(self.shell_args.num_processes,
dtype=np.int32),
success=np.zeros(self.shell_args.num_processes, dtype=np.int32),
end_geodesic_distance=np.zeros(self.shell_args.num_processes,
dtype=np.float32),
start_geodesic_distance=np.zeros(self.shell_args.num_processes,
dtype=np.float32),
delta_geodesic_distance=np.zeros(self.shell_args.num_processes,
dtype=np.float32),
distance_from_start=np.zeros(self.shell_args.num_processes,
dtype=np.float32),
)
eval_stats_means = dict(
num_episodes=0,
num_steps=0,
reward=0,
spl=0,
visited_states=0,
success=0,
end_geodesic_distance=0,
start_geodesic_distance=0,
delta_geodesic_distance=0,
distance_from_start=0,
)
eval_output_file.write("name,%s,iter,%d\n\n" %
(eval_net_file_name, self.log_iter))
if self.shell_args.task == "pointnav":
eval_output_file.write((
"episode_id,num_steps,reward,spl,success,start_geodesic_distance,"
"end_geodesic_distance,delta_geodesic_distance\n"))
elif self.shell_args.task == "exploration":
eval_output_file.write("episode_id,reward,visited_states\n")
elif self.shell_args.task == "flee":
eval_output_file.write("episode_id,reward,distance_from_start\n")
distances = pt_util.to_numpy(obs["goal_geodesic_distance"])
eval_stats["start_geodesic_distance"][:] = distances
progress_bar = tqdm.tqdm(total=self.num_eval_episodes_total)
all_done = False
iter_count = 0
video_frames = []
previous_visual_features = None
egomotion_pred = None
prev_action = None
prev_action_probs = None
if hasattr(self.agent.base, "enable_decoder"):
if self.shell_args.record_video:
self.agent.base.enable_decoder()
else:
self.agent.base.disable_decoder()
while not all_done:
with torch.no_grad():
start_t = time.time()
value, action, action_log_prob, recurrent_hidden_states = self.agent.act(
{
"images":
obs["rgb"].to(self.device),
"target_vector":
obs["pointgoal"].to(self.device),
"prev_action_one_hot":
obs["prev_action_one_hot"].to(self.device),
},
recurrent_hidden_states,
masks,
)
action_cpu = pt_util.to_numpy(action.squeeze(1))
translated_action_space = ACTION_SPACE[action_cpu]
timers[1] += time.time() - start_t
if self.shell_args.record_video:
if self.shell_args.use_motion_loss:
if previous_visual_features is not None:
egomotion_pred = self.agent.base.predict_egomotion(
self.agent.base.visual_features,
previous_visual_features)
previous_visual_features = self.agent.base.visual_features.detach(
)
# Copy so we don't mess with obs itself
draw_obs = OrderedDict()
for key, val in obs.items():
draw_obs[key] = pt_util.to_numpy(val).copy()
best_next_action = draw_obs.pop("best_next_action", None)
if prev_action is not None:
draw_obs["action_taken"] = pt_util.to_numpy(
self.agent.last_dist.probs).copy()
draw_obs["action_taken"][:] = 0
draw_obs["action_taken"][
np.arange(self.shell_args.num_processes),
prev_action] = 1
draw_obs["action_taken_name"] = SIM_ACTION_TO_NAME[
draw_obs['prev_action'].item()]
draw_obs["action_prob"] = pt_util.to_numpy(
prev_action_probs).copy()
else:
draw_obs["action_taken"] = None
draw_obs["action_taken_name"] = SIM_ACTION_TO_NAME[
SimulatorActions.STOP]
draw_obs["action_prob"] = None
prev_action = action_cpu
prev_action_probs = self.agent.last_dist.probs.detach()
if hasattr(
self.agent.base, "decoder_outputs"
) and self.agent.base.decoder_outputs is not None:
min_channel = 0
for key, num_channels in self.agent.base.decoder_output_info:
outputs = self.agent.base.decoder_outputs[:,
min_channel:
min_channel
+
num_channels,
...]
draw_obs["output_" +
key] = pt_util.to_numpy(outputs).copy()
min_channel += num_channels
draw_obs["rewards"] = eval_stats["reward"]
draw_obs["step"] = current_episode_lengths.copy()
draw_obs["method"] = self.shell_args.method_name
if best_next_action is not None:
draw_obs["best_next_action"] = best_next_action
if self.shell_args.use_motion_loss:
if egomotion_pred is not None:
draw_obs["egomotion_pred"] = pt_util.to_numpy(
F.softmax(egomotion_pred, dim=1)).copy()
else:
draw_obs["egomotion_pred"] = None
images, titles, normalize = draw_outputs.obs_to_images(
draw_obs)
im_inds = [0, 2, 3, 1, 6, 7, 8, 5]
height, width = images[0].shape[:2]
subplot_image = drawing.subplot(
images,
2,
4,
titles=titles,
normalize=normalize,
output_width=max(width, 320),
output_height=max(height, 320),
order=im_inds,
fancy_text=True,
)
video_frames.append(subplot_image)
# save dists from previous step or else on reset they will be overwritten
distances = pt_util.to_numpy(obs["goal_geodesic_distance"])
start_t = time.time()
obs, rewards, dones, infos = self.envs.step(
translated_action_space)
timers[0] += time.time() - start_t
obs["prev_action_one_hot"] = obs[
"prev_action_one_hot"][:, ACTION_SPACE].to(torch.float32)
rewards *= REWARD_SCALAR
rewards = np.clip(rewards, -10, 10)
if self.shell_args.record_video and not dones[0]:
obs["top_down_map"] = infos[0]["top_down_map"]
if self.compute_surface_normals:
obs["surface_normals"] = pt_util.depth_to_surface_normals(
obs["depth"].to(self.device))
current_episode_rewards += pt_util.to_numpy(rewards).squeeze()
current_episode_lengths += 1
to_pause = []
for ii, done_e in enumerate(dones):
if done_e:
num_episodes += 1
if self.shell_args.record_video:
if "top_down_map" in infos[ii]:
video_dir = os.path.join(
self.shell_args.log_prefix, "videos")
if not os.path.exists(video_dir):
os.makedirs(video_dir)
im_path = os.path.join(
self.shell_args.log_prefix, "videos",
"total_steps_%d.png" % total_num_steps)
top_down_map = maps.colorize_topdown_map(
infos[ii]["top_down_map"]["map"])
imageio.imsave(im_path, top_down_map)
images_to_video(
video_frames,
os.path.join(self.shell_args.log_prefix,
"videos"),
"total_steps_%d" % total_num_steps,
)
video_frames = []
eval_stats["episode_ids"][ii] = infos[ii]["episode_id"]
if self.shell_args.task == "pointnav":
print(
"FINISHED EPISODE %d Length %d Reward %.3f SPL %.4f"
% (
num_episodes,
current_episode_lengths[ii],
current_episode_rewards[ii],
infos[ii]["spl"],
))
eval_stats["spl"][ii] = infos[ii]["spl"]
eval_stats["success"][
ii] = eval_stats["spl"][ii] > 0
eval_stats["num_steps"][
ii] = current_episode_lengths[ii]
eval_stats["end_geodesic_distance"][ii] = (
infos[ii]["final_distance"] if
eval_stats["success"][ii] else distances[ii])
eval_stats["delta_geodesic_distance"][ii] = (
eval_stats["start_geodesic_distance"][ii] -
eval_stats["end_geodesic_distance"][ii])
elif self.shell_args.task == "exploration":
print(
"FINISHED EPISODE %d Reward %.3f States Visited %d"
% (num_episodes, current_episode_rewards[ii],
infos[ii]["visited_states"]))
eval_stats["visited_states"][ii] = infos[ii][
"visited_states"]
elif self.shell_args.task == "flee":
print(
"FINISHED EPISODE %d Reward %.3f Distance from start %.4f"
% (num_episodes, current_episode_rewards[ii],
infos[ii]["distance_from_start"]))
eval_stats["distance_from_start"][ii] = infos[ii][
"distance_from_start"]
eval_stats["num_episodes"][ii] += 1
eval_stats["reward"][ii] = current_episode_rewards[ii]
if eval_stats["num_episodes"][ii] <= dataset_sizes[ii]:
progress_bar.update(1)
eval_stats_means["num_episodes"] += 1
eval_stats_means["reward"] += eval_stats["reward"][
ii]
if self.shell_args.task == "pointnav":
eval_output_file.write(
"%s,%d,%f,%f,%d,%f,%f,%f\n" % (
eval_stats["episode_ids"][ii],
eval_stats["num_steps"][ii],
eval_stats["reward"][ii],
eval_stats["spl"][ii],
eval_stats["success"][ii],
eval_stats["start_geodesic_distance"]
[ii],
eval_stats["end_geodesic_distance"]
[ii],
eval_stats["delta_geodesic_distance"]
[ii],
))
eval_stats_means["num_steps"] += eval_stats[
"num_steps"][ii]
eval_stats_means["spl"] += eval_stats["spl"][
ii]
eval_stats_means["success"] += eval_stats[
"success"][ii]
eval_stats_means[
"start_geodesic_distance"] += eval_stats[
"start_geodesic_distance"][ii]
eval_stats_means[
"end_geodesic_distance"] += eval_stats[
"end_geodesic_distance"][ii]
eval_stats_means[
"delta_geodesic_distance"] += eval_stats[
"delta_geodesic_distance"][ii]
elif self.shell_args.task == "exploration":
eval_output_file.write("%s,%f,%d\n" % (
eval_stats["episode_ids"][ii],
eval_stats["reward"][ii],
eval_stats["visited_states"][ii],
))
eval_stats_means[
"visited_states"] += eval_stats[
"visited_states"][ii]
elif self.shell_args.task == "flee":
eval_output_file.write("%s,%f,%f\n" % (
eval_stats["episode_ids"][ii],
eval_stats["reward"][ii],
eval_stats["distance_from_start"][ii],
))
eval_stats_means[
"distance_from_start"] += eval_stats[
"distance_from_start"][ii]
eval_output_file.flush()
if eval_stats["num_episodes"][ii] == dataset_sizes[
ii]:
to_pause.append(ii)
episode_rewards.append(current_episode_rewards[ii])
current_episode_rewards[ii] = 0
episode_lengths.append(current_episode_lengths[ii])
current_episode_lengths[ii] = 0
eval_stats["start_geodesic_distance"][ii] = obs[
"goal_geodesic_distance"][ii]
# If done then clean the history of observations.
masks = torch.FloatTensor([[0.0] if done_ else [1.0]
for done_ in dones]).to(self.device)
# Reverse in order to maintain order in case of multiple.
to_pause.reverse()
for ii in to_pause:
# Pause the environments that are done from the vectorenv.
print("Pausing env", ii)
self.envs.unwrapped.pause_at(ii)
current_episode_rewards = np.concatenate(
(current_episode_rewards[:ii],
current_episode_rewards[ii + 1:]))
current_episode_lengths = np.concatenate(
(current_episode_lengths[:ii],
current_episode_lengths[ii + 1:]))
for key in eval_stats:
eval_stats[key] = np.concatenate(
(eval_stats[key][:ii], eval_stats[key][ii + 1:]))
dataset_sizes = np.concatenate(
(dataset_sizes[:ii], dataset_sizes[ii + 1:]))
for key in obs:
if type(obs[key]) == torch.Tensor:
obs[key] = torch.cat(
(obs[key][:ii], obs[key][ii + 1:]), dim=0)
else:
obs[key] = np.concatenate(
(obs[key][:ii], obs[key][ii + 1:]), axis=0)
recurrent_hidden_states = torch.cat(
(recurrent_hidden_states[:ii],
recurrent_hidden_states[ii + 1:]),
dim=0)
masks = torch.cat((masks[:ii], masks[ii + 1:]), dim=0)
if len(dataset_sizes) == 0:
progress_bar.close()
all_done = True
total_num_steps += self.shell_args.num_processes
if iter_count % (self.shell_args.log_interval * 100) == 0:
log_dict = {}
if len(episode_rewards) > 1:
end = time.time()
nsteps = total_num_steps - fps_timer[1]
fps = int((total_num_steps - fps_timer[1]) /
(end - fps_timer[0]))
timers /= nsteps
env_spf = timers[0]
forward_spf = timers[1]
print((
"{} Updates {}, num timesteps {}, FPS {}, Env FPS {}, "
"\n Last {} training episodes: mean/median reward {:.3f}/{:.3f}, "
"min/max reward {:.3f}/{:.3f}\n").format(
datetime.datetime.now(),
iter_count,
total_num_steps,
fps,
int(1.0 / env_spf),
len(episode_rewards),
np.mean(episode_rewards),
np.median(episode_rewards),
np.min(episode_rewards),
np.max(episode_rewards),
))
if self.shell_args.tensorboard:
log_dict.update({
"stats/full_spf":
1.0 / (fps + 1e-10),
"stats/env_spf":
env_spf,
"stats/forward_spf":
forward_spf,
"stats/full_fps":
fps,
"stats/env_fps":
1.0 / (env_spf + 1e-10),
"stats/forward_fps":
1.0 / (forward_spf + 1e-10),
"episode/mean_rewards":
np.mean(episode_rewards),
"episode/median_rewards":
np.median(episode_rewards),
"episode/min_rewards":
np.min(episode_rewards),
"episode/max_rewards":
np.max(episode_rewards),
"episode/mean_lengths":
np.mean(episode_lengths),
"episode/median_lengths":
np.median(episode_lengths),
"episode/min_lengths":
np.min(episode_lengths),
"episode/max_lengths":
np.max(episode_lengths),
})
self.eval_logger.dict_log(log_dict, step=self.log_iter)
fps_timer[0] = time.time()
fps_timer[1] = total_num_steps
timers[:] = 0
iter_count += 1
print("Finished testing")
print("Wrote results to", eval_output_file.name)
eval_stats_means = {
key: val / eval_stats_means["num_episodes"]
for key, val in eval_stats_means.items()
}
if self.shell_args.tensorboard:
log_dict = {"single_episode/reward": eval_stats_means["reward"]}
if self.shell_args.task == "pointnav":
log_dict.update({
"single_episode/num_steps":
eval_stats_means["num_steps"],
"single_episode/spl":
eval_stats_means["spl"],
"single_episode/success":
eval_stats_means["success"],
"single_episode/start_geodesic_distance":
eval_stats_means["start_geodesic_distance"],
"single_episode/end_geodesic_distance":
eval_stats_means["end_geodesic_distance"],
"single_episode/delta_geodesic_distance":
eval_stats_means["delta_geodesic_distance"],
})
elif self.shell_args.task == "exploration":
log_dict["single_episode/visited_states"] = eval_stats_means[
"visited_states"]
elif self.shell_args.task == "flee":
log_dict[
"single_episode/distance_from_start"] = eval_stats_means[
"distance_from_start"]
self.eval_logger.dict_log(log_dict, step=self.log_iter)
self.envs.unwrapped.resume_all()