def main():
d = load_model_and_data()
model_dy = d['model_dy']
dataset = d['dataset']
config = d['config']
multi_episode_dict = d['multi_episode_dict']
n_his = config['train']['n_history']
# rotate
# episode_names = dataset.get_episode_names()
# print("len(episode_names)", len(episode_names))
# episode_name = episode_names[0]
# start_idx = 1
# n_roll = 15
# n_his = 2
# # straight + rotate
# episode_name = "2020-06-29-21-04-16"
# print('episode_name', episode_name)
# start_idx = 1
# n_roll = 15
# n_his = 2
# this is a nice straight push . . .
# push with box in horizontal position
episode_name = "2020-06-29-22-03-45"
start_idx = 2
n_roll = 15
n_his = 2
camera_name = "d415_01"
episode = multi_episode_dict[episode_name]
print("len(episode)", len(episode))
vis = meshcat_utils.make_default_visualizer_object()
vis.delete()
idx_list = range(start_idx, start_idx + n_roll + n_his)
# visualize ground truth rollout
if True:
for display_idx, episode_idx in enumerate(idx_list):
visualize_episode_data_single_timestep(
vis=vis,
dataset=dataset,
episode=episode,
camera_name=camera_name,
episode_idx=episode_idx,
display_idx=display_idx,
)
##### VISUALIZE PREDICTED ROLLOUT ##########
data = dataset._getitem(episode, start_idx, rollout_length=n_roll)
states = data['observations_combined'].unsqueeze(0)
z = model_dy.compute_z_state(states)['z']
actions = data['actions'].unsqueeze(0)
# z_init
z_init = z[:, :n_his]
# actions_init
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:action_end_idx]
with torch.no_grad():
rollout_data = rollout_model(state_init=z_init.cuda(),
action_seq=action_seq.cuda(),
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
# state_rollout_pred = rollout_data['state_pred']
z_rollout_pred = rollout_data['state_pred'].squeeze()
if True:
for idx in range(len(z_rollout_pred)):
visualize_model_prediction_single_timestep(
vis, config, z_pred=z_rollout_pred[idx], display_idx=idx + 1)
print("z_rollout_pred.shape", z_rollout_pred.shape)
def main():
# load dynamics model
model_dict = load_model_state_dict()
model = model_dict['model_dy']
model_dd = model_dict['model_dd']
config = model.config
env_config = load_yaml(os.path.join(get_project_root(), 'experiments/exp_20_mugs/config.yaml'))
env_config['env']['observation']['depth_int16'] = True
n_history = config['train']['n_history']
initial_cond = generate_initial_condition(env_config, push_length=PUSH_LENGTH)
env_config = initial_cond['config']
# enable the right observations
camera_name = model_dict['metadata']['camera_name']
spatial_descriptor_data = model_dict['spatial_descriptor_data']
ref_descriptors = spatial_descriptor_data['spatial_descriptors']
K = ref_descriptors.shape[0]
ref_descriptors = torch.Tensor(ref_descriptors).cuda() # put them on the GPU
print("ref_descriptors\n", ref_descriptors)
print("ref_descriptors.shape", ref_descriptors.shape)
# create the environment
# create the environment
env = DrakeMugsEnv(env_config)
env.reset()
T_world_camera = env.camera_pose(camera_name)
camera_K_matrix = env.camera_K_matrix(camera_name)
# create another environment for doing rollouts
env2 = DrakeMugsEnv(env_config, visualize=False)
env2.reset()
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.drake_pusher_position_3D(config)
visual_observation_function = \
VisualObservationFunctionFactory.descriptor_keypoints_3D(config=config,
camera_name=camera_name,
model_dd=model_dd,
ref_descriptors=ref_descriptors,
K_matrix=camera_K_matrix,
T_world_camera=T_world_camera,
)
episode = OnlineEpisodeReader()
mpc_input_builder = DynamicsModelInputBuilder(observation_function=observation_function,
visual_observation_function=visual_observation_function,
action_function=action_function,
episode=episode)
vis = meshcat_utils.make_default_visualizer_object()
vis.delete()
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
obs_init = env.get_observation()
#### ROLLOUT USING LEARNED MODEL + GROUND TRUTH ACTIONS ############
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
# add just some large number of these
episode.clear()
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
def goal_func(obs_tmp):
state_tmp = mpc_input_builder.get_state_input_single_timestep({'observation': obs_tmp})['state']
return model.compute_z_state(state_tmp.unsqueeze(0))['z_object'].flatten()
#
idx = episode.get_latest_idx()
obs_raw = episode.get_observation(idx)
z_object_goal = goal_func(obs_raw)
z_keypoints_init_W = keypoints_3D_from_dynamics_model_output(z_object_goal, K)
z_keypoints_init_W = torch_utils.cast_to_numpy(z_keypoints_init_W)
z_keypoints_obj = keypoints_world_frame_to_object_frame(z_keypoints_init_W,
T_W_obj=slider_pose_from_observation(obs_init))
color = [1, 0, 0]
meshcat_utils.visualize_points(vis=vis,
name="keypoints_W",
pts=z_keypoints_init_W,
color=color,
size=0.02,
)
# input("press Enter to continue")
# rollout single action sequence using the simulator
action_sequence_np = torch_utils.cast_to_numpy(initial_cond['action_sequence'])
N = action_sequence_np.shape[0]
obs_rollout_gt = env_utils.rollout_action_sequence(env, action_sequence_np)[
'observations']
# using the vision model to get "goal" keypoints
z_object_goal = goal_func(obs_rollout_gt[-1])
z_object_goal_np = torch_utils.cast_to_numpy(z_object_goal)
z_keypoints_goal = keypoints_3D_from_dynamics_model_output(z_object_goal, K)
z_keypoints_goal = torch_utils.cast_to_numpy(z_keypoints_goal)
# visualize goal keypoints
color = [0, 1, 0]
meshcat_utils.visualize_points(vis=vis,
name="goal_keypoints",
pts=z_keypoints_goal,
color=color,
size=0.02,
)
# input("press Enter to continue")
#### ROLLOUT USING LEARNED MODEL + GROUND TRUTH ACTIONS ############
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
# add just some large number of these
episode.clear()
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
# [n_history, state_dim]
idx = episode.get_latest_idx()
dyna_net_input = mpc_input_builder.get_dynamics_model_input(idx, n_history=n_history)
state_init = dyna_net_input['states'].cuda() # [n_history, state_dim]
action_init = dyna_net_input['actions'] # [n_history, action_dim]
print("state_init.shape", state_init.shape)
print("action_init.shape", action_init.shape)
action_seq_gt_torch = torch_utils.cast_to_torch(initial_cond['action_sequence'])
action_input = torch.cat((action_init[:(n_history-1)], action_seq_gt_torch), dim=0).cuda()
print("action_input.shape", action_input.shape)
# rollout using the ground truth actions and learned model
# need to add the batch dim to do that
z_init = model.compute_z_state(state_init)['z']
rollout_pred = rollout_model(state_init=z_init.unsqueeze(0),
action_seq=action_input.unsqueeze(0),
dynamics_net=model,
compute_debug_data=True)
state_pred_rollout = rollout_pred['state_pred']
print("state_pred_rollout.shape", state_pred_rollout.shape)
for i in range(N):
# vis GT for now
name = "GT_3D/%d" % (i)
T_W_obj = slider_pose_from_observation(obs_rollout_gt[i])
# print("T_W_obj", T_W_obj)
# green
color = np.array([0, 1, 0]) * get_color_intensity(i, N)
meshcat_utils.visualize_points(vis=vis,
name=name,
pts=z_keypoints_obj,
color=color,
size=0.01,
T=T_W_obj)
# red
color = np.array([0, 0, 1]) * get_color_intensity(i, N)
state_pred = state_pred_rollout[:, i, :]
pts_pred = keypoints_3D_from_dynamics_model_output(state_pred, K).squeeze()
pts_pred = pts_pred.detach().cpu().numpy()
name = "pred_3D/%d" % (i)
meshcat_utils.visualize_points(vis=vis,
name=name,
pts=pts_pred,
color=color,
size=0.01,
)
# input("finished visualizing GT rollout\npress Enter to continue")
index_dict = get_object_and_robot_state_indices(config)
object_indices = index_dict['object_indices']
# reset the environment and use the MPC controller to stabilize this
# now setup the MPC to try to stabilize this . . . .
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
episode.clear()
# add just some large number of these
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
# input("press Enter to continue")
# make a planner config
planner_config = copy.copy(config)
config_tmp = load_yaml(os.path.join(get_project_root(), 'experiments/drake_pusher_slider/eval_config.yaml'))
planner_config['mpc'] = config_tmp['mpc']
planner = None
if PLANNER_TYPE == "random_shooting":
planner = RandomShootingPlanner(planner_config)
elif PLANNER_TYPE == "mppi":
planner = PlannerMPPI(planner_config)
else:
raise ValueError("unknown planner type: %s" % (PLANNER_TYPE))
mpc_out = None
action_seq_mpc = None
state_pred_mpc = None
counter = -1
while True:
counter += 1
print("\n\n-----Running MPC Optimization: Counter (%d)-------" % (counter))
obs_cur = env.get_observation()
episode.add_observation_only(obs_cur)
if counter == 0 or REPLAN:
print("replanning")
####### Run the MPC ##########
# [1, state_dim]
n_look_ahead = N - counter
if USE_FIXED_MPC_HORIZON:
n_look_ahead = MPC_HORIZON
if n_look_ahead == 0:
break
# start_time = time.time()
# idx of current observation
idx = episode.get_latest_idx()
mpc_start_time = time.time()
mpc_input_data = mpc_input_builder.get_dynamics_model_input(idx, n_history=n_history)
state_cur = mpc_input_data['states']
action_his = mpc_input_data['actions']
if mpc_out is not None:
action_seq_rollout_init = mpc_out['action_seq'][1:]
else:
action_seq_rollout_init = None
# run MPPI
z_cur = None
with torch.no_grad():
z_cur = model.compute_z_state(state_cur.unsqueeze(0).cuda())['z'].squeeze(0)
mpc_out = planner.trajectory_optimization(state_cur=z_cur,
action_his=action_his,
obs_goal=z_object_goal_np,
model_dy=model,
action_seq_rollout_init=action_seq_rollout_init,
n_look_ahead=n_look_ahead,
eval_indices=object_indices,
rollout_best_action_sequence=True,
verbose=True,
)
print("MPC step took %.4f seconds" %(time.time() - mpc_start_time))
action_seq_mpc = mpc_out['action_seq'].cpu().numpy()
# Rollout with ground truth simulator dynamics
action_seq_mpc = torch_utils.cast_to_numpy(mpc_out['action_seq'])
env2.set_simulator_state_from_observation_dict(env2.get_mutable_context(), obs_cur)
obs_mpc_gt = env_utils.rollout_action_sequence(env2, action_seq_mpc)['observations']
state_pred_mpc = torch_utils.cast_to_numpy(mpc_out['state_pred'])
vis['mpc_3D'].delete()
vis['mpc_GT_3D'].delete()
L = len(obs_mpc_gt)
print("L", L)
if L == 0:
break
for i in range(L):
# red
color = np.array([1, 0, 0]) * get_color_intensity(i, L)
state_pred = state_pred_mpc[i, :]
state_pred = np.expand_dims(state_pred, 0) # may need to expand dims here
pts_pred = keypoints_3D_from_dynamics_model_output(state_pred, K).squeeze()
name = "mpc_3D/%d" % (i)
meshcat_utils.visualize_points(vis=vis,
name=name,
pts=pts_pred,
color=color,
size=0.01,
)
# ground truth rollout of the MPC action_seq
name = "mpc_GT_3D/%d" % (i)
T_W_obj = slider_pose_from_observation(obs_mpc_gt[i])
# green
color = np.array([1, 1, 0]) * get_color_intensity(i, L)
meshcat_utils.visualize_points(vis=vis,
name=name,
pts=z_keypoints_obj,
color=color,
size=0.01,
T=T_W_obj)
action_cur = action_seq_mpc[0]
print("action_cur", action_cur)
# print("action_GT", initial_cond['action'])
input("press Enter to continue")
# add observation actions to the episode
obs_cur = env.get_observation()
episode.replace_observation_action(obs_cur, action_cur)
# step the simulator
env.step(action_cur)
# visualize current keypoint positions
obs_cur = env.get_observation()
T_W_obj = slider_pose_from_observation(obs_cur)
# yellow
color = np.array([1, 1, 0])
meshcat_utils.visualize_points(vis=vis,
name="keypoint_cur",
pts=z_keypoints_obj,
color=color,
size=0.02,
T=T_W_obj)
action_seq_mpc = action_seq_mpc[1:]
state_pred_mpc = state_pred_mpc[1:]
obs_final = env.get_observation()
pose_error = compute_pose_error(obs_rollout_gt[-1],
obs_final)
print("position_error: %.3f" %(pose_error['position_error']))
print("angle error degrees: %.3f" %(pose_error['angle_error_degrees']))
def train_dynamics(
config,
train_dir, # str: directory to save output
multi_episode_dict=None,
visual_observation_function=None,
metadata=None,
spatial_descriptors_data=None,
):
assert multi_episode_dict is not None
# assert spatial_descriptors_idx is not None
# set random seed for reproduction
set_seed(config['train']['random_seed'])
st_epoch = config['train'][
'resume_epoch'] if config['train']['resume_epoch'] > 0 else 0
tee = Tee(os.path.join(train_dir, 'train_st_epoch_%d.log' % st_epoch), 'w')
tensorboard_dir = os.path.join(train_dir, "tensorboard")
if not os.path.exists(tensorboard_dir):
os.makedirs(tensorboard_dir)
writer = SummaryWriter(log_dir=tensorboard_dir)
# save the config
save_yaml(config, os.path.join(train_dir, "config.yaml"))
if metadata is not None:
save_pickle(metadata, os.path.join(train_dir, 'metadata.p'))
if spatial_descriptors_data is not None:
save_pickle(spatial_descriptors_data,
os.path.join(train_dir, 'spatial_descriptors.p'))
training_stats = dict()
training_stats_file = os.path.join(train_dir, 'training_stats.yaml')
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.function_from_config(
config)
datasets = {}
dataloaders = {}
data_n_batches = {}
for phase in ['train', 'valid']:
print("Loading data for %s" % phase)
datasets[phase] = MultiEpisodeDataset(
config,
action_function=action_function,
observation_function=observation_function,
episodes=multi_episode_dict,
phase=phase,
visual_observation_function=visual_observation_function)
print("len(datasets[phase])", len(datasets[phase]))
dataloaders[phase] = DataLoader(
datasets[phase],
batch_size=config['train']['batch_size'],
shuffle=True if phase == 'train' else False,
num_workers=config['train']['num_workers'],
drop_last=True)
data_n_batches[phase] = len(dataloaders[phase])
use_gpu = torch.cuda.is_available()
# compute normalization parameters if not starting from pre-trained network . . .
if False:
dataset = datasets["train"]
data = dataset[0]
print("data['observations_combined'].shape",
data['observations_combined'].shape)
print("data.keys()", data.keys())
print("data['observations_combined']",
data['observations_combined'][0])
print("data['observations_combined'].shape",
data['observations_combined'].shape)
print("data['actions'].shape", data['actions'].shape)
print("data['actions']\n", data['actions'])
quit()
'''
Build model for dynamics prediction
'''
model_dy = build_dynamics_model(config)
if config['dynamics_net'] == "mlp_weight_matrix":
raise ValueError("can't use weight matrix with standard setup")
# criterion
criterionMSE = nn.MSELoss()
l1Loss = nn.L1Loss()
smoothL1 = nn.SmoothL1Loss()
# optimizer
params = model_dy.parameters()
lr = float(config['train']['lr'])
optimizer = optim.Adam(params,
lr=lr,
betas=(config['train']['adam_beta1'], 0.999))
# setup scheduler
sc = config['train']['lr_scheduler']
scheduler = None
if config['train']['lr_scheduler']['enabled']:
if config['train']['lr_scheduler']['type'] == "ReduceLROnPlateau":
scheduler = ReduceLROnPlateau(optimizer,
mode='min',
factor=sc['factor'],
patience=sc['patience'],
threshold_mode=sc['threshold_mode'],
cooldown=sc['cooldown'],
verbose=True)
elif config['train']['lr_scheduler']['type'] == "StepLR":
step_size = config['train']['lr_scheduler']['step_size']
gamma = config['train']['lr_scheduler']['gamma']
scheduler = StepLR(optimizer, step_size=step_size, gamma=gamma)
else:
raise ValueError("unknown scheduler type: %s" %
(config['train']['lr_scheduler']['type']))
if use_gpu:
print("using gpu")
model_dy = model_dy.cuda()
# print("model_dy.vision_net._ref_descriptors.device", model_dy.vision_net._ref_descriptors.device)
# print("model_dy.vision_net #params: %d" %(count_trainable_parameters(model_dy.vision_net)))
best_valid_loss = np.inf
valid_loss_type = config['train']['valid_loss_type']
global_iteration = 0
counters = {'train': 0, 'valid': 0}
epoch_counter_external = 0
loss = 0
try:
for epoch in range(st_epoch, config['train']['n_epoch']):
phases = ['train', 'valid']
epoch_counter_external = epoch
writer.add_scalar("Training Params/epoch", epoch, global_iteration)
for phase in phases:
# only validate at a certain frequency
if (phase == "valid") and (
(epoch % config['train']['valid_frequency']) != 0):
continue
model_dy.train(phase == 'train')
average_meter_container = dict()
step_duration_meter = AverageMeter()
# bar = ProgressBar(max_value=data_n_batches[phase])
loader = dataloaders[phase]
for i, data in enumerate(loader):
loss_container = dict() # store the losses for this step
step_start_time = time.time()
global_iteration += 1
counters[phase] += 1
with torch.set_grad_enabled(phase == 'train'):
n_his, n_roll = config['train']['n_history'], config[
'train']['n_rollout']
n_samples = n_his + n_roll
if DEBUG:
print("global iteration: %d" % (global_iteration))
print("n_samples", n_samples)
# [B, n_samples, obs_dim]
states = data['observations_combined']
# [B, n_samples, action_dim]
actions = data['actions']
B = actions.shape[0]
if use_gpu:
states = states.cuda()
actions = actions.cuda()
# state_cur: B x n_his x state_dim
# state_cur = states[:, :n_his]
# [B, n_his, state_dim]
state_init = states[:, :n_his]
# We want to rollout n_roll steps
# actions = [B, n_his + n_roll, -1]
# so we want action_seq.shape = [B, n_roll, -1]
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:
action_end_idx, :]
if DEBUG:
print("states.shape", states.shape)
print("state_init.shape", state_init.shape)
print("actions.shape", actions.shape)
print("action_seq.shape", action_seq.shape)
# try using models_dy.rollout_model instead of doing this manually
rollout_data = rollout_model(state_init=state_init,
action_seq=action_seq,
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
state_rollout_pred = rollout_data['state_pred']
# [B, n_roll, state_dim]
state_rollout_gt = states[:, n_his:]
if DEBUG:
print("state_rollout_gt.shape",
state_rollout_gt.shape)
print("state_rollout_pred.shape",
state_rollout_pred.shape)
# the loss function is between
# [B, n_roll, state_dim]
state_pred_err = state_rollout_pred - state_rollout_gt
# everything is in 3D space now so no need to do any scaling
# all the losses would be in meters . . . .
loss_mse = criterionMSE(state_rollout_pred,
state_rollout_gt)
loss_l1 = l1Loss(state_rollout_pred, state_rollout_gt)
loss_l2 = torch.norm(state_pred_err, dim=-1).mean()
loss_smoothl1 = smoothL1(state_rollout_pred,
state_rollout_gt)
loss_smoothl1_final_step = smoothL1(
state_rollout_pred[:, -1], state_rollout_gt[:, -1])
# compute losses at final step of the rollout
mse_final_step = criterionMSE(
state_rollout_pred[:, -1], state_rollout_gt[:, -1])
l2_final_step = torch.norm(state_pred_err[:, -1],
dim=-1).mean()
l1_final_step = l1Loss(state_rollout_pred[:, -1],
state_rollout_gt[:, -1])
loss_container['mse'] = loss_mse
loss_container['l1'] = loss_l1
loss_container['mse_final_step'] = mse_final_step
loss_container['l1_final_step'] = l1_final_step
loss_container['l2_final_step'] = l2_final_step
loss_container['l2'] = loss_l2
loss_container['smooth_l1'] = loss_smoothl1
loss_container[
'smooth_l1_final_step'] = loss_smoothl1_final_step
# compute the loss
loss = 0
for key, val in config['loss_function'].items():
if val['enabled']:
loss += loss_container[key] * val['weight']
loss_container['loss'] = loss
for key, val in loss_container.items():
if not key in average_meter_container:
average_meter_container[key] = AverageMeter()
average_meter_container[key].update(val.item(), B)
step_duration_meter.update(time.time() - step_start_time)
if phase == 'train':
optimizer.zero_grad()
loss.backward()
optimizer.step()
if (i % config['train']['log_per_iter']
== 0) or (global_iteration %
config['train']['log_per_iter'] == 0):
log = '%s [%d/%d][%d/%d] LR: %.6f' % (
phase, epoch, config['train']['n_epoch'], i,
data_n_batches[phase], get_lr(optimizer))
log += ', l2: %.6f' % (loss_container['l2'].item())
log += ', l2_final_step: %.6f' % (
loss_container['l2_final_step'].item())
log += ', step time %.6f' % (step_duration_meter.avg)
step_duration_meter.reset()
print(log)
# log data to tensorboard
# only do it once we have reached 100 iterations
if global_iteration > 100:
writer.add_scalar("Params/learning rate",
get_lr(optimizer),
global_iteration)
writer.add_scalar("Loss_train/%s" % (phase),
loss.item(), global_iteration)
for loss_type, loss_obj in loss_container.items():
plot_name = "Loss/%s/%s" % (loss_type, phase)
writer.add_scalar(plot_name, loss_obj.item(),
counters[phase])
if phase == 'train' and global_iteration % config['train'][
'ckp_per_iter'] == 0:
save_model(
model_dy, '%s/net_dy_epoch_%d_iter_%d' %
(train_dir, epoch, i))
log = '%s [%d/%d] Loss: %.6f, Best valid: %.6f' % (
phase, epoch, config['train']['n_epoch'],
average_meter_container[valid_loss_type].avg,
best_valid_loss)
print(log)
# record all average_meter losses
for key, meter in average_meter_container.items():
writer.add_scalar("AvgMeter/%s/%s" % (key, phase),
meter.avg, epoch)
if phase == "train":
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "StepLR"):
scheduler.step()
if phase == 'valid':
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "ReduceLROnPlateau"):
scheduler.step(
average_meter_container[valid_loss_type].avg)
if average_meter_container[
valid_loss_type].avg < best_valid_loss:
best_valid_loss = average_meter_container[
valid_loss_type].avg
training_stats['epoch'] = epoch
training_stats['global_iteration'] = counters['valid']
save_yaml(training_stats, training_stats_file)
save_model(model_dy, '%s/net_best_dy' % (train_dir))
writer.flush() # flush SummaryWriter events to disk
except KeyboardInterrupt:
# save network if we have a keyboard interrupt
save_model(
model_dy, '%s/net_dy_epoch_%d_keyboard_interrupt' %
(train_dir, epoch_counter_external))
writer.flush() # flush SummaryWriter events to disk
def train_dynamics(
config,
train_dir, # str: directory to save output
multi_episode_dict=None,
spatial_descriptors_idx=None,
metadata=None,
spatial_descriptors_data=None,
):
assert multi_episode_dict is not None
# assert spatial_descriptors_idx is not None
# set random seed for reproduction
set_seed(config['train']['random_seed'])
st_epoch = config['train'][
'resume_epoch'] if config['train']['resume_epoch'] > 0 else 0
tee = Tee(os.path.join(train_dir, 'train_st_epoch_%d.log' % st_epoch), 'w')
tensorboard_dir = os.path.join(train_dir, "tensorboard")
if not os.path.exists(tensorboard_dir):
os.makedirs(tensorboard_dir)
writer = SummaryWriter(log_dir=tensorboard_dir)
# save the config
save_yaml(config, os.path.join(train_dir, "config.yaml"))
if metadata is not None:
save_pickle(metadata, os.path.join(train_dir, 'metadata.p'))
if spatial_descriptors_data is not None:
save_pickle(spatial_descriptors_data,
os.path.join(train_dir, 'spatial_descriptors.p'))
training_stats = dict()
training_stats_file = os.path.join(train_dir, 'training_stats.yaml')
# load the data
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.function_from_config(
config)
datasets = {}
dataloaders = {}
data_n_batches = {}
for phase in ['train', 'valid']:
print("Loading data for %s" % phase)
datasets[phase] = MultiEpisodeDataset(
config,
action_function=action_function,
observation_function=observation_function,
episodes=multi_episode_dict,
phase=phase)
dataloaders[phase] = DataLoader(
datasets[phase],
batch_size=config['train']['batch_size'],
shuffle=True if phase == 'train' else False,
num_workers=config['train']['num_workers'],
drop_last=True)
data_n_batches[phase] = len(dataloaders[phase])
use_gpu = torch.cuda.is_available()
# compute normalization parameters if not starting from pre-trained network . . .
'''
Build model for dynamics prediction
'''
model_dy = build_dynamics_model(config)
camera_name = config['vision_net']['camera_name']
# criterion
criterionMSE = nn.MSELoss()
l1Loss = nn.L1Loss()
smoothL1 = nn.SmoothL1Loss()
# optimizer
params = model_dy.parameters()
lr = float(config['train']['lr'])
optimizer = optim.Adam(params,
lr=lr,
betas=(config['train']['adam_beta1'], 0.999))
# setup scheduler
sc = config['train']['lr_scheduler']
scheduler = None
if config['train']['lr_scheduler']['enabled']:
if config['train']['lr_scheduler']['type'] == "ReduceLROnPlateau":
scheduler = ReduceLROnPlateau(optimizer,
mode='min',
factor=sc['factor'],
patience=sc['patience'],
threshold_mode=sc['threshold_mode'],
cooldown=sc['cooldown'],
verbose=True)
elif config['train']['lr_scheduler']['type'] == "StepLR":
step_size = config['train']['lr_scheduler']['step_size']
gamma = config['train']['lr_scheduler']['gamma']
scheduler = StepLR(optimizer, step_size=step_size, gamma=gamma)
else:
raise ValueError("unknown scheduler type: %s" %
(config['train']['lr_scheduler']['type']))
if use_gpu:
print("using gpu")
model_dy = model_dy.cuda()
# print("model_dy.vision_net._ref_descriptors.device", model_dy.vision_net._ref_descriptors.device)
# print("model_dy.vision_net #params: %d" %(count_trainable_parameters(model_dy.vision_net)))
best_valid_loss = np.inf
valid_loss_type = config['train']['valid_loss_type']
global_iteration = 0
counters = {'train': 0, 'valid': 0}
epoch_counter_external = 0
loss = 0
index_map = get_object_and_robot_state_indices(config)
object_state_indices = torch.LongTensor(index_map['object_indices'])
robot_state_indices = torch.LongTensor(index_map['robot_indices'])
object_state_shape = config['dataset']['object_state_shape']
try:
for epoch in range(st_epoch, config['train']['n_epoch']):
phases = ['train', 'valid']
epoch_counter_external = epoch
writer.add_scalar("Training Params/epoch", epoch, global_iteration)
for phase in phases:
# only validate at a certain frequency
if (phase == "valid") and (
(epoch % config['train']['valid_frequency']) != 0):
continue
model_dy.train(phase == 'train')
average_meter_container = dict()
step_duration_meter = AverageMeter()
# bar = ProgressBar(max_value=data_n_batches[phase])
loader = dataloaders[phase]
for i, data in enumerate(loader):
loss_container = dict() # store the losses for this step
step_start_time = time.time()
global_iteration += 1
counters[phase] += 1
with torch.set_grad_enabled(phase == 'train'):
n_his, n_roll = config['train']['n_history'], config[
'train']['n_rollout']
n_samples = n_his + n_roll
if DEBUG:
print("global iteration: %d" % (global_iteration))
print("n_samples", n_samples)
# [B, n_samples, obs_dim]
observations = data['observations']
visual_observations_list = data[
'visual_observations_list']
# [B, n_samples, action_dim]
actions = data['actions']
B = actions.shape[0]
if use_gpu:
observations = observations.cuda()
actions = actions.cuda()
# compile the visual observations
# compute the output of the visual model for all timesteps
visual_model_output_list = []
for visual_obs in visual_observations_list:
# visual_obs is a dict containing observation for a single
# time step (of course across a batch however)
# visual_obs[<camera_name>]['rgb_tensor'] has shape [B, 3, H, W]
# probably need to cast input to cuda
# [B, -1, 3]
keypoints = visual_obs[camera_name][
'descriptor_keypoints_3d_world_frame']
# [B, K, 3] where K = len(spatial_descriptors_idx)
keypoints = keypoints[:, spatial_descriptors_idx]
B, K, _ = keypoints.shape
# [B, K*3]
keypoints_reshape = keypoints.reshape([B, K * 3])
if DEBUG:
print("keypoints.shape", keypoints.shape)
print("keypoints_reshape.shape",
keypoints_reshape.shape)
visual_model_output_list.append(keypoints_reshape)
visual_model_output = None
if len(visual_model_output_list) > 0:
# concatenate this into a tensor
# [B, n_samples, vision_model_out_dim]
visual_model_output = torch.stack(
visual_model_output_list, dim=1)
else:
visual_model_output = torch.Tensor(
) # empty tensor
# states, actions = data
assert actions.shape[1] == n_samples
# cast this to float so it can be concatenated below
visual_model_output = visual_model_output.type_as(
observations)
# we don't have any visual observations, so states are observations
# states is gotten by concatenating visual_observations and observations
# [B, n_samples, vision_model_out_dim + obs_dim]
states = torch.cat((visual_model_output, observations),
dim=-1)
# state_cur: B x n_his x state_dim
# state_cur = states[:, :n_his]
# [B, n_his, state_dim]
state_init = states[:, :n_his]
# We want to rollout n_roll steps
# actions = [B, n_his + n_roll, -1]
# so we want action_seq.shape = [B, n_roll, -1]
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:
action_end_idx, :]
if DEBUG:
print("states.shape", states.shape)
print("state_init.shape", state_init.shape)
print("actions.shape", actions.shape)
print("action_seq.shape", action_seq.shape)
# try using models_dy.rollout_model instead of doing this manually
rollout_data = rollout_model(state_init=state_init,
action_seq=action_seq,
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
state_rollout_pred = rollout_data['state_pred']
# [B, n_roll, state_dim]
state_rollout_gt = states[:, n_his:]
if DEBUG:
print("state_rollout_gt.shape",
state_rollout_gt.shape)
print("state_rollout_pred.shape",
state_rollout_pred.shape)
# the loss function is between
# [B, n_roll, state_dim]
state_pred_err = state_rollout_pred - state_rollout_gt
# [B, n_roll, object_state_dim]
object_state_err = state_pred_err[:, :,
object_state_indices]
B, n_roll, object_state_dim = object_state_err.shape
# [B, n_roll, *object_state_shape]
object_state_err_reshape = object_state_err.reshape(
[B, n_roll, *object_state_shape])
# num weights
J = object_state_err_reshape.shape[2]
weights = model_dy.weight_matrix
assert len(
weights) == J, "len(weights) = %d, but J = %d" % (
len(weights), J)
# loss mse object, note the use of broadcasting semantics
# [B, n_roll]
object_state_loss_mse = weights * torch.pow(
object_state_err_reshape, 2).sum(dim=-1)
object_state_loss_mse = object_state_loss_mse.mean()
l2_object = (weights * torch.norm(
object_state_err_reshape, dim=-1)).mean()
l2_object_final_step = (weights * torch.norm(
object_state_err_reshape[:, -1], dim=-1)).mean()
# [B, n_roll, robot_state_dim]
robot_state_err = state_pred_err[:, :,
robot_state_indices]
robot_state_loss_mse = torch.pow(robot_state_err,
2).sum(dim=-1).mean()
loss_container[
'object_state_loss_mse'] = object_state_loss_mse
loss_container[
'robot_state_loss_mse'] = robot_state_loss_mse
loss_container['l2_object'] = l2_object
loss_container[
'l2_object_final_step'] = l2_object_final_step
# total loss
loss = object_state_loss_mse + robot_state_loss_mse
loss_container['loss'] = loss
for key, val in loss_container.items():
if not key in average_meter_container:
average_meter_container[key] = AverageMeter()
average_meter_container[key].update(val.item(), B)
step_duration_meter.update(time.time() - step_start_time)
if phase == 'train':
optimizer.zero_grad()
loss.backward()
optimizer.step()
if (i % config['train']['log_per_iter']
== 0) or (global_iteration %
config['train']['log_per_iter'] == 0):
log = '%s [%d/%d][%d/%d] LR: %.6f' % (
phase, epoch, config['train']['n_epoch'], i,
data_n_batches[phase], get_lr(optimizer))
# log += ', l2: %.6f' % (loss_container['l2'].item())
# log += ', l2_final_step: %.6f' %(loss_container['l2_final_step'].item())
log += ', step time %.6f' % (step_duration_meter.avg)
step_duration_meter.reset()
print(log)
# log data to tensorboard
# only do it once we have reached 100 iterations
if global_iteration > 100:
writer.add_scalar("Params/learning rate",
get_lr(optimizer),
global_iteration)
writer.add_scalar("Loss_train/%s" % (phase),
loss.item(), global_iteration)
for loss_type, loss_obj in loss_container.items():
plot_name = "Loss/%s/%s" % (loss_type, phase)
writer.add_scalar(plot_name, loss_obj.item(),
counters[phase])
# only plot the weights if we are in the train phase . . . .
if phase == "train":
for i in range(len(weights)):
plot_name = "Weights/%d" % (i)
writer.add_scalar(plot_name,
weights[i].item(),
counters[phase])
if phase == 'train' and global_iteration % config['train'][
'ckp_per_iter'] == 0:
save_model(
model_dy, '%s/net_dy_epoch_%d_iter_%d' %
(train_dir, epoch, i))
log = '%s [%d/%d] Loss: %.6f, Best valid: %.6f' % (
phase, epoch, config['train']['n_epoch'],
average_meter_container[valid_loss_type].avg,
best_valid_loss)
print(log)
# record all average_meter losses
for key, meter in average_meter_container.items():
writer.add_scalar("AvgMeter/%s/%s" % (key, phase),
meter.avg, epoch)
if phase == "train":
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "StepLR"):
scheduler.step()
if phase == 'valid':
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "ReduceLROnPlateau"):
scheduler.step(
average_meter_container[valid_loss_type].avg)
if average_meter_container[
valid_loss_type].avg < best_valid_loss:
best_valid_loss = average_meter_container[
valid_loss_type].avg
training_stats['epoch'] = epoch
training_stats['global_iteration'] = counters['valid']
save_yaml(training_stats, training_stats_file)
save_model(model_dy, '%s/net_best_dy' % (train_dir))
writer.flush() # flush SummaryWriter events to disk
except KeyboardInterrupt:
# save network if we have a keyboard interrupt
save_model(
model_dy, '%s/net_dy_epoch_%d_keyboard_interrupt' %
(train_dir, epoch_counter_external))
writer.flush() # flush SummaryWriter events to disk
def eval_dynamics(
config,
eval_dir, # str: directory to save output
multi_episode_dict=None,
n_rollout_list=None,
model_dy=None, # should already be in eval mode
phase_list=None, # typically it's
num_epochs=10,
):
assert n_rollout_list is not None
assert model_dy is not None
assert multi_episode_dict is not None
if phase_list is None:
phase_list = ["valid"]
# set random seed for reproduction
set_seed(config['train']['random_seed'])
tensorboard_dir = os.path.join(eval_dir, "tensorboard")
if not os.path.exists(tensorboard_dir):
os.makedirs(tensorboard_dir)
writer = SummaryWriter(log_dir=tensorboard_dir)
# save the config
save_yaml(config, os.path.join(eval_dir, "config.yaml"))
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.function_from_config(
config)
use_gpu = torch.cuda.is_available()
best_valid_loss = np.inf
global_iteration = 0
counters = {'train': 0, 'valid': 0}
epoch_counter_external = 0
stats = dict()
for n_rollout in n_rollout_list:
stats[n_rollout] = dict()
config_tmp = copy.copy(config)
config_tmp['train']['n_rollout'] = n_rollout
for phase in phase_list:
stats[n_rollout][phase] = dict()
print("Loading data for %s" % phase)
dataset = MultiEpisodeDataset(
config_tmp,
action_function=action_function,
observation_function=observation_function,
episodes=multi_episode_dict,
phase=phase)
dataloader = DataLoader(dataset,
batch_size=config['train']['batch_size'],
shuffle=True,
num_workers=config['train']['num_workers'],
drop_last=True)
loss_tensor_container = {"l2_avg": [], "l2_final_step": []}
step_duration_meter = AverageMeter()
global_iteration = 0
for epoch in range(num_epochs):
for i, data in enumerate(dataloader):
loss_container = dict() # store the losses for this step
# types of losses ["l2_avg", "l2_final_step"]
step_start_time = time.time()
global_iteration += 1
counters[phase] += 1
with torch.no_grad():
n_his = config['train']['n_history']
n_roll = n_rollout
n_samples = n_his + n_roll
if DEBUG:
print("global iteration: %d" % (global_iteration))
print("n_samples", n_samples)
# [B, n_samples, obs_dim]
observations = data['observations']
# [B, n_samples, action_dim]
actions = data['actions']
B = actions.shape[0]
if use_gpu:
observations = observations.cuda()
actions = actions.cuda()
# states, actions = data
assert actions.shape[1] == n_samples
loss_mse = 0.
# we don't have any visual observations, so states are observations
states = observations
# state_cur: B x n_his x state_dim
# state_cur = states[:, :n_his]
# [B, n_his, state_dim]
state_init = states[:, :n_his]
# We want to rollout n_roll steps
# actions = [B, n_his + n_roll, -1]
# so we want action_seq.shape = [B, n_roll, -1]
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:
action_end_idx, :]
if DEBUG:
print("states.shape", states.shape)
print("state_init.shape", state_init.shape)
print("actions.shape", actions.shape)
print("action_seq.shape", action_seq.shape)
# try using models_dy.rollout_model instead of doing this manually
rollout_data = rollout_model(state_init=state_init,
action_seq=action_seq,
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
state_rollout_pred = rollout_data['state_pred']
# [B, n_roll, state_dim]
state_rollout_gt = states[:, n_his:]
if DEBUG:
print("state_rollout_gt.shape",
state_rollout_gt.shape)
print("state_rollout_pred.shape",
state_rollout_pred.shape)
# the loss function is between
# [B, n_roll, state_dim]
state_pred_err = state_rollout_pred - state_rollout_gt
# [B]
l2_avg_tensor = torch.mean(torch.norm(state_pred_err,
dim=-1),
dim=1).detach().cpu()
l2_avg = l2_avg_tensor.mean()
# [B]
l2_final_step_tensor = torch.norm(
state_pred_err[:, -1], dim=-1).detach().cpu()
l2_final_step = l2_final_step_tensor.mean()
loss_tensor_container["l2_avg"].append(l2_avg_tensor)
loss_container["l2_avg"] = l2_avg
loss_tensor_container["l2_final_step"].append(
l2_final_step_tensor)
loss_container["l2_final_step"] = l2_final_step
step_duration_meter.update(time.time() - step_start_time)
if (i % config['train']['log_per_iter']
== 0) or (global_iteration %
config['train']['log_per_iter'] == 0):
# print some logging information
log = ""
log += ', step time %.6f' % (step_duration_meter.avg)
# log data to tensorboard
for loss_type, loss_obj in loss_container.items():
plot_name = "%s/n_roll_%s/%s" % (loss_type, n_roll,
phase)
writer.add_scalar(plot_name, loss_obj.item(),
global_iteration)
log += " %s: %.6f," % (plot_name, loss_obj.item())
print(log)
writer.flush() # flush SummaryWriter events to disk
stats[n_rollout][phase] = dict()
for loss_type in loss_tensor_container:
t = torch.cat(loss_tensor_container[loss_type])
mean = t.mean()
median = t.median()
std = t.std()
stats[n_rollout][phase][loss_type] = {
'mean': mean,
'median': median,
'std': std
}
for stat_type, val in stats[n_rollout][phase][loss_type].items(
):
plot_name = "stats/%s/n_roll_%d/%s/%s" % (
loss_type, n_roll, phase, stat_type)
for idx_tmp in [0, 10, 100]:
writer.add_scalar(plot_name, val, idx_tmp)
def train_dynamics(config, train_dir, data_dir, model_dy, global_iteration,
writer):
# load the data
multi_episode_dict = DrakeSimEpisodeReader.load_dataset(
data_dir, load_image_data=False)
'''
for episode_name in list(multi_episode_dict.keys()):
print("episode name", episode_name)
episode = multi_episode_dict[episode_name]
obs = episode.get_observation(34)
print(obs)
'''
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.function_from_config(
config)
datasets = {}
dataloaders = {}
data_n_batches = {}
for phase in ['train', 'valid']:
print("Loading data for %s" % phase)
datasets[phase] = MultiEpisodeDataset(
config,
action_function=action_function,
observation_function=observation_function,
episodes=multi_episode_dict,
phase=phase)
# print(config['train'])
dataloaders[phase] = DataLoader(
datasets[phase],
batch_size=config['train']['batch_size'],
shuffle=True if phase == 'train' else False,
num_workers=config['train']['num_workers'],
drop_last=True)
data_n_batches[phase] = len(dataloaders[phase])
use_gpu = torch.cuda.is_available()
'''
define model for dynamics prediction
'''
if model_dy is None:
model_dy = DynaNetMLP(config)
# criterion
MSELoss = nn.MSELoss()
L1Loss = nn.L1Loss()
# optimizer
params = model_dy.parameters()
lr = float(config['train']['lr'])
optimizer = optim.Adam(params,
lr=lr,
betas=(config['train']['adam_beta1'], 0.999))
# setup scheduler
sc = config['train']['lr_scheduler']
scheduler = None
if config['train']['lr_scheduler']['enabled']:
if config['train']['lr_scheduler']['type'] == "ReduceLROnPlateau":
scheduler = ReduceLROnPlateau(optimizer,
mode='min',
factor=sc['factor'],
patience=sc['patience'],
threshold_mode=sc['threshold_mode'],
cooldown=sc['cooldown'],
verbose=True)
elif config['train']['lr_scheduler']['type'] == "StepLR":
step_size = config['train']['lr_scheduler']['step_size']
gamma = config['train']['lr_scheduler']['gamma']
scheduler = StepLR(optimizer, step_size=step_size, gamma=gamma)
else:
raise ValueError("unknown scheduler type: %s" %
(config['train']['lr_scheduler']['type']))
if use_gpu:
print("using gpu")
model_dy = model_dy.cuda()
best_valid_loss = np.inf
counters = {'train': 0, 'valid': 0}
try:
for epoch in range(config['train']['n_epoch']):
phases = ['train', 'valid']
writer.add_scalar("Training Params/epoch", epoch, global_iteration)
for phase in phases:
model_dy.train(phase == 'train')
meter_loss_rmse = AverageMeter()
step_duration_meter = AverageMeter()
# bar = ProgressBar(max_value=data_n_batches[phase])
loader = dataloaders[phase]
for i, data in enumerate(loader):
loss_container = dict() # store the losses for this step
step_start_time = time.time()
global_iteration += 1
counters[phase] += 1
with torch.set_grad_enabled(phase == 'train'):
n_his, n_roll = config['train']['n_history'], config[
'train']['n_rollout']
n_samples = n_his + n_roll
if DEBUG:
print("global iteration: %d" % global_iteration)
print("n_samples", n_samples)
# [B, n_samples, obs_dim]
observations = data['observations']
# [B, n_samples, action_dim]
actions = data['actions']
B = actions.shape[0]
if use_gpu:
observations = observations.cuda()
actions = actions.cuda()
# states, actions = data
assert actions.shape[1] == n_samples
loss_mse = 0.
# we don't have any visual observations, so states are observations
states = observations
# [B, n_his, state_dim]
state_init = states[:, :n_his]
# We want to rollout n_roll steps
# actions = [B, n_his + n_roll, -1]
# so we want action_seq.shape = [B, n_roll, -1]
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:
action_end_idx, :]
if DEBUG:
print("states.shape", states.shape)
print("state_init.shape", state_init.shape)
print("actions.shape", actions.shape)
print("action_seq.shape", action_seq.shape)
# try using models_dy.rollout_model instead of doing this manually
rollout_data = rollout_model(state_init=state_init,
action_seq=action_seq,
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
state_rollout_pred = rollout_data['state_pred']
# [B, n_roll, state_dim]
state_rollout_gt = states[:, n_his:]
if DEBUG:
print("state_rollout_gt.shape",
state_rollout_gt.shape)
print("state_rollout_pred.shape",
state_rollout_pred.shape)
# the loss function is between
# [B, n_roll, state_dim]
state_pred_err = state_rollout_pred - state_rollout_gt
# everything is in 3D space now so no need to do any scaling
# all the losses would be in meters . . . .
loss_mse = MSELoss(state_rollout_pred,
state_rollout_gt)
loss_l1 = L1Loss(state_rollout_pred, state_rollout_gt)
meter_loss_rmse.update(np.sqrt(loss_mse.item()), B)
# compute losses at final step of the rollout
mse_final_step = MSELoss(state_rollout_pred[:, -1, :],
state_rollout_gt[:, -1, :])
l2_final_step = torch.norm(state_pred_err[:, -1],
dim=-1).mean()
l1_final_step = L1Loss(state_rollout_pred[:, -1, :],
state_rollout_gt[:, -1, :])
loss_container['mse'] = loss_mse
loss_container['l1'] = loss_l1
loss_container['mse_final_step'] = mse_final_step
loss_container['l1_final_step'] = l1_final_step
loss_container['l2_final_step'] = l2_final_step
step_duration_meter.update(time.time() - step_start_time)
if phase == 'train':
optimizer.zero_grad()
loss_mse.backward()
optimizer.step()
if i % config['train']['log_per_iter'] == 0:
log = '%s %d [%d/%d][%d/%d] LR: %.6f' % (
phase, global_iteration, epoch,
config['train']['n_epoch'], i,
data_n_batches[phase], get_lr(optimizer))
log += ', rmse: %.6f (%.6f)' % (np.sqrt(
loss_mse.item()), meter_loss_rmse.avg)
log += ', step time %.6f' % (step_duration_meter.avg)
step_duration_meter.reset()
print(log)
# log data to tensorboard
# only do it once we have reached 100 iterations
if global_iteration > 100:
writer.add_scalar("Params/learning rate",
get_lr(optimizer),
global_iteration)
writer.add_scalar("Loss_MSE/%s" % (phase),
loss_mse.item(),
global_iteration)
writer.add_scalar("L1/%s" % (phase),
loss_l1.item(), global_iteration)
writer.add_scalar("RMSE average loss/%s" % (phase),
meter_loss_rmse.avg,
global_iteration)
writer.add_scalar("n_taj", len(multi_episode_dict),
global_iteration)
for loss_type, loss_obj in loss_container.items():
plot_name = "Loss/%s/%s" % (loss_type, phase)
writer.add_scalar(plot_name, loss_obj.item(),
global_iteration)
if phase == 'train' and global_iteration % config['train'][
'ckp_per_iter'] == 0:
save_model(
model_dy, '%s/net_dy_iter_%d' %
(train_dir, global_iteration))
log = '%s %d [%d/%d] Loss: %.6f, Best valid: %.6f' % (
phase, global_iteration, epoch, config['train']['n_epoch'],
meter_loss_rmse.avg, best_valid_loss)
print(log)
if phase == "train":
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "StepLR"):
scheduler.step()
if phase == 'valid':
if (scheduler is not None) and (
config['train']['lr_scheduler']['type']
== "ReduceLROnPlateau"):
scheduler.step(meter_loss_rmse.avg)
if meter_loss_rmse.avg < best_valid_loss:
best_valid_loss = meter_loss_rmse.avg
save_model(model_dy, '%s/net_best_dy' % (train_dir))
writer.flush() # flush SummaryWriter events to disk
except KeyboardInterrupt:
# save network if we have a keyboard interrupt
save_model(
model_dy, '%s/net_dy_iter_%d_keyboard_interrupt' %
(train_dir, global_iteration))
writer.flush() # flush SummaryWriter events to disk
return model_dy, global_iteration
def main():
# load dynamics model
model_dict = load_autoencoder_model()
model = model_dict['model_dy']
model_ae = model_dict['model_ae']
visual_observation_function = model_dict['visual_observation_function']
config = model.config
env_config = load_yaml(
os.path.join(get_project_root(),
'experiments/exp_18_box_on_side/config.yaml'))
env_config['env']['observation']['depth_int16'] = True
n_history = config['train']['n_history']
# create the environment
# create the environment
env = DrakePusherSliderEnv(env_config)
env.reset()
# create another environment for doing rollouts
env2 = DrakePusherSliderEnv(env_config, visualize=False)
env2.reset()
action_function = ActionFunctionFactory.function_from_config(config)
observation_function = ObservationFunctionFactory.drake_pusher_position_3D(
config)
episode = OnlineEpisodeReader()
mpc_input_builder = DynamicsModelInputBuilder(
observation_function=observation_function,
visual_observation_function=visual_observation_function,
action_function=action_function,
episode=episode)
vis = meshcat_utils.make_default_visualizer_object()
vis.delete()
initial_cond = get_initial_state()
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
obs_init = env.get_observation()
# visualize starting position of the object
print("obs_init.keys()", obs_init.keys())
print("obs_init['slider']['position']", obs_init['slider']['position'])
T = DrakePusherSliderEnv.object_position_from_observation(obs_init)
vis['start_pose'].set_object(triad(scale=0.1))
vis['state_pose'].set_transform(T)
#### ROLLOUT USING LEARNED MODEL + GROUND TRUTH ACTIONS ############
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
# add just some large number of these
episode.clear()
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
#### ROLLOUT THE ACTION SEQUENCE USING THE SIMULATOR ##########
# rollout single action sequence using the simulator
gt_rollout_data = env_utils.rollout_action_sequence(
env, initial_cond['action_sequence'].cpu().numpy())
env_obs_rollout_gt = gt_rollout_data['observations']
gt_rollout_episode = gt_rollout_data['episode_reader']
for i, env_obs in enumerate(gt_rollout_data['observations']):
T = DrakePusherSliderEnv.object_position_from_observation(env_obs)
vis_name = "GT_trajectory/%d" % (i)
vis[vis_name].set_object(triad(scale=0.1))
vis[vis_name].set_transform(T)
action_state_gt = mpc_input_builder.get_action_state_tensors(
start_idx=0, num_timesteps=N, episode=gt_rollout_episode)
state_rollout_gt = action_state_gt['states']
action_rollout_gt = action_state_gt['actions']
z_object_rollout_gt = model.compute_z_state(
state_rollout_gt)['z_object_flat']
print('state_rollout_gt.shape', state_rollout_gt.shape)
print("z_object_rollout_gt.shape", z_object_rollout_gt.shape)
def goal_func(obs_tmp):
state_tmp = mpc_input_builder.get_state_input_single_timestep(
{'observation': obs_tmp})['state']
return model.compute_z_state(
state_tmp.unsqueeze(0))['z_object'].flatten()
# using the vision model to get "goal" keypoints
z_object_goal = goal_func(env_obs_rollout_gt[-1])
z_object_goal_np = torch_utils.cast_to_numpy(z_object_goal)
# input("press Enter to continue")
#### ROLLOUT USING LEARNED MODEL + GROUND TRUTH ACTIONS ############
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
# add just some large number of these
episode.clear()
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
# [n_history, state_dim]
idx = episode.get_latest_idx()
dyna_net_input = mpc_input_builder.get_dynamics_model_input(
idx, n_history=n_history)
state_init = dyna_net_input['states'].cuda() # [n_history, state_dim]
action_init = dyna_net_input['actions'] # [n_history, action_dim]
print("state_init.shape", state_init.shape)
print("action_init.shape", action_init.shape)
print("n_history", n_history)
action_seq_gt_torch = initial_cond['action_sequence']
action_input = torch.cat(
(action_init[:(n_history - 1)], action_seq_gt_torch), dim=0).cuda()
print("action_input.shape", action_input.shape)
# rollout using the ground truth actions and learned model
# need to add the batch dim to do that
z_init = model.compute_z_state(state_init)['z']
rollout_pred = rollout_model(state_init=z_init.unsqueeze(0),
action_seq=action_input.unsqueeze(0),
dynamics_net=model,
compute_debug_data=True)
state_pred_rollout = rollout_pred['state_pred'].squeeze(0)
print("state_pred_rollout.shape", state_pred_rollout.shape)
# input("press Enter to continue")
# check L2 distance between predicted and actual
# basically comparing state_pred_rollout and state_rollout_gt
print("state_rollout_gt[-1]\n", state_rollout_gt[-1])
print("state_pred_rollout[-1]\n", state_pred_rollout[-1])
index_dict = get_object_and_robot_state_indices(config)
object_indices = index_dict['object_indices']
# reset the environment and use the MPC controller to stabilize this
# now setup the MPC to try to stabilize this . . . .
reset_environment(env, initial_cond['q_pusher'], initial_cond['q_slider'])
episode.clear()
# add just some large number of these
for i in range(n_history):
action_zero = np.zeros(2)
obs_tmp = env.get_observation()
episode.add_observation_action(obs_tmp, action_zero)
# input("press Enter to continue")
# make a planner config
planner_config = copy.copy(config)
config_tmp = load_yaml(
os.path.join(get_project_root(),
'experiments/drake_pusher_slider/eval_config.yaml'))
planner_config['mpc'] = config_tmp['mpc']
planner_config['mpc']['mppi']['terminal_cost_only'] = TERMINAL_COST_ONLY
planner_config['mpc']['random_shooting'][
'terminal_cost_only'] = TERMINAL_COST_ONLY
planner = None
if PLANNER_TYPE == "random_shooting":
planner = RandomShootingPlanner(planner_config)
elif PLANNER_TYPE == "mppi":
planner = PlannerMPPI(planner_config)
else:
raise ValueError("unknown planner type: %s" % (PLANNER_TYPE))
mpc_out = None
action_seq_mpc = None
state_pred_mpc = None
counter = -1
while True:
counter += 1
print("\n\n-----Running MPC Optimization: Counter (%d)-------" %
(counter))
obs_cur = env.get_observation()
episode.add_observation_only(obs_cur)
if counter == 0 or REPLAN:
print("replanning")
####### Run the MPC ##########
# [1, state_dim]
n_look_ahead = N - counter
if USE_FIXED_MPC_HORIZON:
n_look_ahead = MPC_HORIZON
elif USE_SHORT_HORIZON_MPC:
n_look_ahead = min(MPC_HORIZON, N - counter)
if n_look_ahead == 0:
break
start_idx = counter
end_idx = counter + n_look_ahead
print("start_idx:", start_idx)
print("end_idx:", end_idx)
print("n_look_ahead", n_look_ahead)
# start_time = time.time()
# idx of current observation
idx = episode.get_latest_idx()
mpc_start_time = time.time()
mpc_input_data = mpc_input_builder.get_dynamics_model_input(
idx, n_history=n_history)
state_cur = mpc_input_data['states']
action_his = mpc_input_data['actions']
if SEED_WITH_NOMINAL_ACTIONS:
action_seq_rollout_init = action_seq_gt_torch[
start_idx:end_idx]
else:
if mpc_out is not None:
action_seq_rollout_init = mpc_out['action_seq'][1:]
print("action_seq_rollout_init.shape",
action_seq_rollout_init.shape)
if action_seq_rollout_init.shape[0] < n_look_ahead:
num_steps = n_look_ahead - action_seq_rollout_init.shape[
0]
action_seq_zero = torch.zeros([num_steps, 2])
action_seq_rollout_init = torch.cat(
(action_seq_rollout_init, action_seq_zero), dim=0)
print("action_seq_rollout_init.shape",
action_seq_rollout_init.shape)
else:
action_seq_rollout_init = None
# run MPPI
z_cur = None
with torch.no_grad():
z_cur = model.compute_z_state(
state_cur.unsqueeze(0).cuda())['z'].squeeze(0)
if action_seq_rollout_init is not None:
n_look_ahead = action_seq_rollout_init.shape[0]
obs_goal = None
print("z_object_rollout_gt.shape", z_object_rollout_gt.shape)
if TRAJECTORY_GOAL:
obs_goal = z_object_rollout_gt[start_idx:end_idx]
print("n_look_ahead", n_look_ahead)
print("obs_goal.shape", obs_goal.shape)
# add the final goal state on as needed
if obs_goal.shape[0] < n_look_ahead:
obs_goal_final = z_object_rollout_gt[-1].unsqueeze(0)
num_repeat = n_look_ahead - obs_goal.shape[0]
obs_goal_final_expand = obs_goal_final.expand(
[num_repeat, -1])
obs_goal = torch.cat((obs_goal, obs_goal_final_expand),
dim=0)
else:
obs_goal = z_object_rollout_gt[-1]
obs_goal = torch_utils.cast_to_numpy(obs_goal)
print("obs_goal.shape", obs_goal.shape)
seed = 1
set_seed(seed)
mpc_out = planner.trajectory_optimization(
state_cur=z_cur,
action_his=action_his,
obs_goal=obs_goal,
model_dy=model,
action_seq_rollout_init=action_seq_rollout_init,
n_look_ahead=n_look_ahead,
eval_indices=object_indices,
rollout_best_action_sequence=True,
verbose=True,
add_grid_action_samples=True,
)
print("MPC step took %.4f seconds" %
(time.time() - mpc_start_time))
action_seq_mpc = torch_utils.cast_to_numpy(mpc_out['action_seq'])
state_pred_mpc = torch_utils.cast_to_numpy(mpc_out['state_pred'])
# Rollout with ground truth simulator dynamics
env2.set_simulator_state_from_observation_dict(
env2.get_mutable_context(), obs_cur)
obs_mpc_gt = env_utils.rollout_action_sequence(
env2, action_seq_mpc)['observations']
vis['mpc_3D'].delete()
vis['mpc_GT_3D'].delete()
L = len(obs_mpc_gt)
print("L", L)
if L == 0:
break
for i in range(L):
# ground truth rollout of the MPC action_seq
name = "mpc_GT_3D/%d" % (i)
T_W_obj = DrakePusherSliderEnv.object_position_from_observation(
obs_mpc_gt[i])
vis[name].set_object(triad(scale=0.1))
vis[name].set_transform(T_W_obj)
action_cur = action_seq_mpc[0]
print("action_cur", action_cur)
print("action_GT", initial_cond['action'])
input("press Enter to continue")
# add observation actions to the episode
obs_cur = env.get_observation()
episode.replace_observation_action(obs_cur, action_cur)
# step the simulator
env.step(action_cur)
# update the trajectories, in case we aren't replanning
action_seq_mpc = action_seq_mpc[1:]
state_pred_mpc = state_pred_mpc[1:]
pose_error = compute_pose_error(env_obs_rollout_gt[-1], obs_cur)
print("position_error: %.3f" % (pose_error['position_error']))
print("angle error degrees: %.3f" %
(pose_error['angle_error_degrees']))
obs_final = env.get_observation()
pose_error = compute_pose_error(env_obs_rollout_gt[-1], obs_final)
print("position_error: %.3f" % (pose_error['position_error']))
print("angle error degrees: %.3f" % (pose_error['angle_error_degrees']))
def main():
d = load_model_and_data()
model_dy = d['model_dy']
dataset = d['dataset']
config = d['config']
multi_episode_dict = d['multi_episode_dict']
planner = d['planner']
planner_config = planner.config
idx_dict = get_object_and_robot_state_indices(config)
object_indices = idx_dict['object_indices']
robot_indices = idx_dict['robot_indices']
n_his = config['train']['n_history']
# save_dir = os.path.join(get_project_root(), 'sandbox/mpc/', get_current_YYYY_MM_DD_hh_mm_ss_ms())
save_dir = os.path.join(get_project_root(),
'sandbox/mpc/push_right_box_horizontal')
print("save_dir", save_dir)
if not os.path.exists(save_dir):
os.makedirs(save_dir)
# rotate
# episode_names = dataset.get_episode_names()
# print("len(episode_names)", len(episode_names))
# episode_name = episode_names[0]
# start_idx = 1
# n_roll = 15
# # straight + rotate
# episode_name = "2020-06-29-21-04-16"
# print('episode_name', episode_name)
# start_idx = 1
# n_roll = 15
# this is a nice straight push . . .
# push with box in horizontal position
episode_name = "2020-06-29-22-03-45"
start_idx = 2
n_roll = 10
# # validation set episodes
# episode_names = dataset.get_episode_names()
# print("len(episode_names)", len(episode_names))
# episode_name = episode_names[1]
# start_idx = 2
# n_roll = 15
camera_name = "d415_01"
episode = multi_episode_dict[episode_name]
print("episode_name", episode_name)
vis = meshcat_utils.make_default_visualizer_object()
vis.delete()
idx_list = list(range(start_idx, start_idx + n_roll + 1))
idx_list_GT = idx_list
goal_idx = idx_list[-1]
print("idx_list", idx_list)
# visualize ground truth rollout
if True:
for display_idx, episode_idx in enumerate(idx_list):
visualize_episode_data_single_timestep(
vis=vis,
dataset=dataset,
episode=episode,
camera_name=camera_name,
episode_idx=episode_idx,
display_idx=episode_idx,
)
data_goal = dataset._getitem(episode,
goal_idx,
rollout_length=1,
n_history=1)
states_goal = data_goal['observations_combined'][0]
z_states_goal = model_dy.compute_z_state(states_goal)['z']
print("states_goal.shape", states_goal.shape)
print("z_states_goal.shape", z_states_goal.shape)
##### VISUALIZE PREDICTED ROLLOUT ##########
data = dataset._getitem(episode, start_idx, rollout_length=n_roll)
states = data['observations_combined'].unsqueeze(0)
z = model_dy.compute_z_state(states)['z']
actions = data['actions'].unsqueeze(0)
idx_range_model_dy_input = data['idx_range']
print("data.keys()", data.keys())
print("data['idx_range']", data['idx_range'])
# z_init
z_init = z[:, :n_his]
# actions_init
action_start_idx = 0
action_end_idx = n_his + n_roll - 1
action_seq = actions[:, action_start_idx:action_end_idx]
print("action_seq GT\n", action_seq)
with torch.no_grad():
rollout_data = rollout_model(state_init=z_init.cuda(),
action_seq=action_seq.cuda(),
dynamics_net=model_dy,
compute_debug_data=False)
# [B, n_roll, state_dim]
# state_rollout_pred = rollout_data['state_pred']
z_rollout_pred = rollout_data['state_pred'].squeeze()
print("z_rollout_pred.shape", z_rollout_pred.shape)
if True:
for idx in range(len(z_rollout_pred)):
display_idx = data['idx_range'][idx + n_his]
visualize_model_prediction_single_timestep(
vis,
config,
z_pred=z_rollout_pred[idx],
display_idx=display_idx)
print("z_rollout_pred.shape", z_rollout_pred.shape)
# compute loss when rolled out using GT action sequence
eval_indices = object_indices
obs_goal = z_states_goal[object_indices].cuda()
reward_data = planner_utils.evaluate_model_rollout(
state_pred=rollout_data['state_pred'],
obs_goal=obs_goal,
eval_indices=eval_indices,
terminal_cost_only=planner_config['mpc']['mppi']['terminal_cost_only'],
p=planner_config['mpc']['mppi']['cost_norm'])
print("reward_data using action_seq_GT\n", reward_data['reward'])
##### MPC ##########
data = dataset._getitem(episode,
start_idx,
rollout_length=0,
n_history=config['train']['n_history'])
state_cur = data['observations_combined'].cuda()
z_state_cur = model_dy.compute_z_state(state_cur)['z']
action_his = data['actions'][:(n_his - 1)].cuda()
print("z_state_cur.shape", state_cur.shape)
print("action_his.shape", action_his.shape)
# don't seed with nominal actions just yet
action_seq_rollout_init = None
set_seed(SEED)
mpc_out = planner.trajectory_optimization(
state_cur=z_state_cur,
action_his=action_his,
obs_goal=obs_goal,
model_dy=model_dy,
action_seq_rollout_init=action_seq_rollout_init,
n_look_ahead=n_roll,
eval_indices=object_indices,
rollout_best_action_sequence=True,
verbose=True,
add_grid_action_samples=True,
)
print("\n\n------MPC output-------\n\n")
print("action_seq:\n", mpc_out['action_seq'])
mpc_state_pred = mpc_out['state_pred']
# current shape is [n_roll + 1, state_dim] but really should be
# [n_roll, state_dim] . . . something is up
print("mpc_state_pred.shape", mpc_state_pred.shape)
print("mpc_out['action_seq'].shape", mpc_out['action_seq'].shape)
print("n_roll", n_roll)
# visualize
for idx in range(n_roll):
episode_idx = start_idx + idx + 1
visualize_model_prediction_single_timestep(vis,
config,
z_pred=mpc_state_pred[idx],
display_idx=episode_idx,
name_prefix="mpc",
color=[255, 0, 0])
######## MPC w/ dynamics model input builder #############
print("\n\n-----DynamicsModelInputBuilder-----")
# dynamics model input builder
online_episode = OnlineEpisodeReader(no_copy=True)
ref_descriptors = d['spatial_descriptor_data']['spatial_descriptors']
ref_descriptors = torch_utils.cast_to_torch(ref_descriptors).cuda()
K_matrix = episode.image_episode.camera_K_matrix(camera_name)
T_world_camera = episode.image_episode.camera_pose(camera_name, 0)
visual_observation_function = \
VisualObservationFunctionFactory.descriptor_keypoints_3D(config=config,
camera_name=camera_name,
model_dd=d['model_dd'],
ref_descriptors=ref_descriptors,
K_matrix=K_matrix,
T_world_camera=T_world_camera,
)
input_builder = DynamicsModelInputBuilder(
observation_function=d['observation_function'],
visual_observation_function=visual_observation_function,
action_function=d['action_function'],
episode=online_episode)
compute_control_action_msg = dict()
compute_control_action_msg['type'] = "COMPUTE_CONTROL_ACTION"
for i in range(n_his):
episode_idx = idx_range_model_dy_input[i]
print("episode_idx", episode_idx)
# add image information to
data = add_images_to_episode_data(episode, episode_idx, camera_name)
online_episode.add_data(copy.deepcopy(data))
compute_control_action_msg['data'] = data
# hack for seeing how much the history matters .. .
# online_episode.add_data(copy.deepcopy(data))
# save informatin for running zmq controller
save_pickle(compute_control_action_msg,
os.path.join(save_dir, 'compute_control_action_msg.p'))
goal_idx = idx_list_GT[-1]
goal_data = add_images_to_episode_data(episode, goal_idx, camera_name)
goal_data['observations']['timestamp_system'] = time.time()
plan_msg = {
'type': "PLAN",
'data': [goal_data],
'n_roll': n_roll,
'K_matrix': K_matrix,
'T_world_camera': T_world_camera,
}
save_pickle(plan_msg, os.path.join(save_dir, "plan_msg.p"))
print("len(online_episode)", len(online_episode))
# use this to construct input
# verify it's the same as what we got from using the dataset directly
idx = online_episode.get_latest_idx()
mpc_input_data = input_builder.get_dynamics_model_input(idx,
n_history=n_his)
# print("mpc_input_data\n", mpc_input_data)
state_cur_ib = mpc_input_data['states'].cuda()
action_his_ib = mpc_input_data['actions'].cuda()
z_state_cur_ib = model_dy.compute_z_state(state_cur_ib)['z']
set_seed(SEED)
mpc_out = planner.trajectory_optimization(
state_cur=z_state_cur_ib,
action_his=action_his_ib,
obs_goal=obs_goal,
model_dy=model_dy,
action_seq_rollout_init=None,
n_look_ahead=n_roll,
eval_indices=object_indices,
rollout_best_action_sequence=True,
verbose=True,
add_grid_action_samples=True,
)
# visualize
for idx in range(n_roll):
episode_idx = start_idx + idx + 1
visualize_model_prediction_single_timestep(
vis,
config,
z_pred=mpc_out['state_pred'][idx],
display_idx=episode_idx,
name_prefix="mpc_input_builder",
color=[255, 255, 0])
def test():
# load dynamics model
model_dict = load_model_state_dict()
model = model_dict['model_dy']
model_dd = model_dict['model_dd']
config = model.config
obs_dim = 18
action_dim = 2
n_his = 2
B = 1
states = torch.zeros([B, n_his, obs_dim]).cuda()
actions = torch.zeros([B, n_his, action_dim]).cuda()
actions.requires_grad = True
print("actions.is_leaf", actions.is_leaf)
dyna_net_input = {'observation': states,
'action': actions,
}
out = model.forward(dyna_net_input)
print(out.shape)
loss = torch.mean(out)
loss.backward()
B = 1
n_roll = 2
states = torch.zeros([B, n_his, obs_dim]).cuda()
actions = torch.zeros([B, n_his + n_roll, action_dim]).cuda()
actions.requires_grad = True
print("actions.is_leaf", actions.is_leaf)
dyna_net_input = {'observation': states,
'action': actions,
}
out = rollout_model(state_init=states,
action_seq=actions,
dynamics_net=model)
print(out['state_pred'].shape)
loss = torch.mean(out['state_pred'])
loss.backward()
B = 1
n_roll = 2
states = torch.zeros([n_his, obs_dim]).cuda()
actions = torch.zeros([B, n_his + n_roll, action_dim]).cuda()
actions.requires_grad = True
print("actions.is_leaf", actions.is_leaf)
dyna_net_input = {'observation': states,
'action': actions,
}
out = rollout_action_sequences(state_init=states,
action_seq=actions,
model_dy=model)
print(out['state_pred'].shape)
loss = torch.mean(out['state_pred'])
loss.backward()