def append(self, snapshot):
snapshot_data = snapshot
if not isinstance(snapshot, np.ndarray):
snapshot_data = snapshot.to_array()
if self.in_memory:
if self._snapshots is not None:
if snapshot_data.shape != self.snapshot_shape:
raise ValueError("This snapshot doesn't match the initialized shape.")
else:
self.snapshot_shape = snapshot_data.shape
self._init_snapshot_storage()
if self._current_index >= self._reserved_length:
if self.max_snapshots:
raise IndexError("Appending exceeded the set maximum snapshot count.")
else:
self._expand_snapshot_storage()
self._snapshots[self._current_index, :] = snapshot_data
if self.output_path:
output_file_name = util.construct_snapshot_name(self.output_path, self._current_index)
util.save_snapshot(snapshot_data, output_file_name)
self._current_index += 1
self.snapshot_count += 1
def save(self, file_name):
""" Saves all appended snapshots to file or directory
Args:
file_name: Can be either a directory name, in which case .csv files
will be saved for each snapshot, or a .pkl file, in which case
all snapshots will be stored in a numpy pickle.
"""
if not self.in_memory:
raise IOError("Can't save the storage since it's not stored in memory.")
if file_name.endswith(".pkl"):
self._snapshots[:self._current_index, :].dump(file_name)
else:
for i in range(self._current_index):
output_file_name = util.construct_snapshot_name(file_name, i)
util.save_snapshot(self._snapshots[i, :], output_file_name)
def train(submit_config: dnnlib.SubmitConfig, iteration_count: int,
eval_interval: int, minibatch_size: int, learning_rate: float,
ramp_down_perc: float, noise: dict, validation_config: dict,
train_tfrecords: str, noise2noise: bool):
noise_augmenter = dnnlib.util.call_func_by_name(**noise)
validation_set = ValidationSet(submit_config)
validation_set.load(**validation_config)
# Create a run context (hides low level details, exposes simple API to manage the run)
# noinspection PyTypeChecker
ctx = dnnlib.RunContext(submit_config, config)
# Initialize TensorFlow graph and session using good default settings
tfutil.init_tf(config.tf_config)
dataset_iter = create_dataset(train_tfrecords, minibatch_size,
noise_augmenter.add_train_noise_tf)
# Construct the network using the Network helper class and a function defined in config.net_config
with tf.device("/gpu:0"):
net = tflib.Network(**config.net_config)
# Optionally print layer information
net.print_layers()
print('Building TensorFlow graph...')
with tf.name_scope('Inputs'), tf.device("/cpu:0"):
lrate_in = tf.placeholder(tf.float32, name='lrate_in', shape=[])
noisy_input, noisy_target, clean_target = dataset_iter.get_next()
noisy_input_split = tf.split(noisy_input, submit_config.num_gpus)
noisy_target_split = tf.split(noisy_target, submit_config.num_gpus)
clean_target_split = tf.split(clean_target, submit_config.num_gpus)
# Define the loss function using the Optimizer helper class, this will take care of multi GPU
opt = tflib.Optimizer(learning_rate=lrate_in, **config.optimizer_config)
for gpu in range(submit_config.num_gpus):
with tf.device("/gpu:%d" % gpu):
net_gpu = net if gpu == 0 else net.clone()
denoised = net_gpu.get_output_for(noisy_input_split[gpu])
if noise2noise:
meansq_error = tf.reduce_mean(
tf.square(noisy_target_split[gpu] - denoised))
else:
meansq_error = tf.reduce_mean(
tf.square(clean_target_split[gpu] - denoised))
# Create an autosummary that will average over all GPUs
with tf.control_dependencies([autosummary("Loss", meansq_error)]):
opt.register_gradients(meansq_error, net_gpu.trainables)
train_step = opt.apply_updates()
# Create a log file for Tensorboard
summary_log = tf.summary.FileWriter(submit_config.run_dir)
summary_log.add_graph(tf.get_default_graph())
print('Training...')
time_maintenance = ctx.get_time_since_last_update()
ctx.update(loss='run %d' % submit_config.run_id,
cur_epoch=0,
max_epoch=iteration_count)
# ***********************************
# The actual training loop
for i in range(iteration_count):
# Whether to stop the training or not should be asked from the context
if ctx.should_stop():
break
# Dump training status
if i % eval_interval == 0:
time_train = ctx.get_time_since_last_update()
time_total = ctx.get_time_since_start()
# Evaluate 'x' to draw a batch of inputs
[source_mb, target_mb] = tfutil.run([noisy_input, clean_target])
denoised = net.run(source_mb)
save_image(submit_config, denoised[0],
"img_{0}_y_pred.png".format(i))
save_image(submit_config, target_mb[0], "img_{0}_y.png".format(i))
save_image(submit_config, source_mb[0],
"img_{0}_x_aug.png".format(i))
validation_set.evaluate(net, i,
noise_augmenter.add_validation_noise_np)
print(
'iter %-10d time %-12s eta %-12s sec/eval %-7.1f sec/iter %-7.2f maintenance %-6.1f'
% (autosummary('Timing/iter', i),
dnnlib.util.format_time(
autosummary('Timing/total_sec', time_total)),
dnnlib.util.format_time(
autosummary('Timing/total_sec',
(time_train / eval_interval) *
(iteration_count - i))),
autosummary('Timing/sec_per_eval', time_train),
autosummary('Timing/sec_per_iter',
time_train / eval_interval),
autosummary('Timing/maintenance_sec', time_maintenance)))
dnnlib.tflib.autosummary.save_summaries(summary_log, i)
ctx.update(loss='run %d' % submit_config.run_id,
cur_epoch=i,
max_epoch=iteration_count)
time_maintenance = ctx.get_last_update_interval() - time_train
# Training epoch
lrate = compute_ramped_down_lrate(i, iteration_count, ramp_down_perc,
learning_rate)
tfutil.run([train_step], {lrate_in: lrate})
# End of training
print("Elapsed time: {0}".format(
util.format_time(ctx.get_time_since_start())))
save_snapshot(submit_config, net, 'final')
# Summary log and context should be closed at the end
summary_log.close()
ctx.close()
def train(model, args):
logging.info('args: %s' % str(args))
logging.info('model: %s, setup: %s' %
(type(model).__name__, str(model.args)))
logging.info('loading dataset')
data = get_dataset(args.dataset)
data.random_level = args.random_level
if args.split_method == 'user':
data, _ = data.split_user(args.frac)
elif args.split_method == 'future':
data, _ = data.split_future(args.frac)
elif args.split_method == 'old':
data, _, _, _ = data.split()
data = data.get_seq()
if type(model).__name__.startswith('DK'):
topic_dic = {}
kcat = Categorical(one_hot=True)
kcat.load_dict(open('data/know_list.txt').read().split('\n'))
for line in open('data/id_know.txt'):
uuid, know = line.strip().split(' ')
know = know.split(',')
topic_dic[uuid] = \
torch.LongTensor(kcat.apply(None, know)) \
.max(0)[0] \
.type(torch.LongTensor)
zero = [0] * len(kcat.apply(None, '<NULL>'))
else:
topics = get_topics(args.dataset, model.words)
optimizer = torch.optim.Adam(model.parameters())
start_epoch = load_last_snapshot(model, args.workspace)
if use_cuda:
model.cuda()
for epoch in range(start_epoch, args.epochs):
logging.info(('epoch {}:'.format(epoch)))
then = time.time()
total_loss = 0
total_mae = 0
total_acc = 0
total_seq_cnt = 0
users = list(data)
random.shuffle(users)
seq_cnt = len(users)
MSE = torch.nn.MSELoss()
MAE = torch.nn.L1Loss()
for user in users:
total_seq_cnt += 1
seq = data[user]
length = len(seq)
optimizer.zero_grad()
loss = 0
mae = 0
acc = 0
h = None
for i, item in enumerate(seq):
if type(model).__name__.startswith('DK'):
if item.topic in topic_dic:
x = topic_dic[item.topic]
else:
x = zero
else:
x = topics.get(item.topic).content
x = Variable(torch.LongTensor(x))
# print(x.size())
score = Variable(torch.FloatTensor([round(item.score)]))
t = Variable(torch.FloatTensor([item.time]))
s, h = model(x, score, t, h)
if args.loss == 'cross_entropy':
loss += F.binary_cross_entropy_with_logits(
s, score.view_as(s))
m = MAE(F.sigmoid(s), score).data[0]
else:
loss += MSE(s, score)
m = MAE(s, score).data[0]
mae += m
acc += m < 0.5
loss /= length
mae /= length
acc /= length
total_loss += loss.data[0]
total_mae += mae
total_acc += acc
loss.backward()
optimizer.step()
if total_seq_cnt % args.save_every == 0:
save_snapshot(model, args.workspace,
'%d.%d' % (epoch, total_seq_cnt))
if total_seq_cnt % args.print_every != 0 and \
total_seq_cnt != seq_cnt:
continue
now = time.time()
duration = (now - then) / 60
logging.info(
'[%d:%d/%d] (%.2f seqs/min) '
'loss %.6f, mae %.6f, acc %.6f' %
(epoch, total_seq_cnt, seq_cnt,
((total_seq_cnt - 1) % args.print_every + 1) / duration,
total_loss / total_seq_cnt, total_mae / total_seq_cnt,
total_acc / total_seq_cnt))
then = now
save_snapshot(model, args.workspace, epoch + 1)
def trainn(model, args):
logging.info('model: %s, setup: %s' %
(type(model).__name__, str(model.args)))
logging.info('loading dataset')
data = get_dataset(args.dataset)
data.random_level = args.random_level
if args.split_method == 'user':
data, _ = data.split_user(args.frac)
elif args.split_method == 'future':
data, _ = data.split_future(args.frac)
elif args.split_method == 'old':
data, _, _, _ = data.split()
data = data.get_seq()
if args.input_knowledge:
logging.info('loading knowledge concepts')
topic_dic = {}
kcat = Categorical(one_hot=True)
kcat.load_dict(open(model.args['knows']).read().split('\n'))
know = 'data/id_firstknow.txt' if 'first' in model.args['knows'] \
else 'data/id_know.txt'
for line in open(know):
uuid, know = line.strip().split(' ')
know = know.split(',')
topic_dic[uuid] = torch.LongTensor(kcat.apply(None,
know)).max(0)[0]
zero = [0] * len(kcat.apply(None, '<NULL>'))
if args.input_text:
logging.info('loading exercise texts')
topics = get_topics(args.dataset, model.words)
optimizer = torch.optim.Adam(model.parameters())
start_epoch = load_last_snapshot(model, args.workspace)
if use_cuda:
model.cuda()
for epoch in range(start_epoch, args.epochs):
logging.info('epoch {}:'.format(epoch))
then = time.time()
total_loss = 0
total_mae = 0
total_acc = 0
total_seq_cnt = 0
users = list(data)
random.shuffle(users)
seq_cnt = len(users)
MSE = torch.nn.MSELoss()
MAE = torch.nn.L1Loss()
for user in users:
total_seq_cnt += 1
seq = data[user]
seq_length = len(seq)
optimizer.zero_grad()
loss = 0
mae = 0
acc = 0
h = None
for i, item in enumerate(seq):
# score = round(item.score)
if args.input_knowledge:
if item.topic in topic_dic:
knowledge = topic_dic[item.topic]
else:
knowledge = zero
# knowledge = torch.LongTensor(knowledge).view(-1).type(torch.FloatTensor)
# one_index = torch.nonzero(knowledge).view(-1)
# expand_vec = torch.zeros(knowledge.size()).view(-1)
# expand_vec[one_index] = score
# cks = torch.cat([knowledge, expand_vec]).view(1, -1)
knowledge = Variable(torch.LongTensor(knowledge))
# cks = Variable(cks)
if args.input_text:
text = topics.get(item.topic).content
text = Variable(torch.LongTensor(text))
score = Variable(torch.FloatTensor([item.score]))
item_time = Variable(torch.FloatTensor([item.time]))
if type(model).__name__.startswith('DK'):
s, h = model(knowledge, score, item_time, h)
elif type(model).__name__.startswith('RA'):
s, h = model(text, score, item_time, h)
elif type(model).__name__.startswith('EK'):
s, h = model(text, knowledge, score, item_time, h)
s = s[0]
if args.loss == 'cross_entropy':
loss += F.binary_cross_entropy_with_logits(
s, score.view_as(s))
m = MAE(F.sigmoid(s), score).data[0]
else:
loss += MSE(s, score)
m = MAE(s, score).data[0]
mae += m
acc += m < 0.5
loss /= seq_length
mae /= seq_length
acc = float(acc) / seq_length
total_loss += loss.data[0]
total_mae += mae
total_acc += acc
loss.backward()
optimizer.step()
if total_seq_cnt % args.save_every == 0:
save_snapshot(model, args.workspace,
'%d.%d' % (epoch, total_seq_cnt))
if total_seq_cnt % args.print_every != 0 and total_seq_cnt != seq_cnt:
continue
now = time.time()
duration = (now - then) / 60
logging.info(
'[%d:%d/%d] (%.2f seqs/min) loss %.6f, mae %.6f, acc %.6f' %
(epoch, total_seq_cnt, seq_cnt,
((total_seq_cnt - 1) % args.print_every + 1) / duration,
total_loss / total_seq_cnt, total_mae / total_seq_cnt,
total_acc / total_seq_cnt))
then = now
save_snapshot(model, args.workspace, epoch + 1)
def train(
submit_config: submit.SubmitConfig,
iteration_count: int,
eval_interval: int,
minibatch_size: int,
learning_rate: float,
ramp_down_perc: float,
noise: dict,
tf_config: dict,
net_config: dict,
optimizer_config: dict,
validation_config: dict,
train_tfrecords: str):
# **dict as argument means: take all additional named arguments to this function
# and insert them into this parameter as dictionary entries.
noise_augmenter = noise.func(**noise.func_kwargs)
validation_set = ValidationSet(submit_config)
# Load all images for validation as numpy arrays to the images attribute of the validation set.
validation_set.load(**validation_config)
# Create a run context (hides low level details, exposes simple API to manage the run)
ctx = run_context.RunContext(submit_config)
# Initialize TensorFlow graph and session using good default settings
tfutil.init_tf(tf_config)
# Creates the data set from the specified path to a generated tfrecords file containing all training images.
# Data set will be split into minibatches of the given size and augment the noise with given noise function.
# Use the dataset_tool_tf to create this tfrecords file.
dataset_iter = create_dataset(train_tfrecords, minibatch_size, noise_augmenter.add_train_noise_tf)
# Construct the network using the Network helper class and a function defined in config.net_config
with tf.device("/gpu:0"):
net = Network(**net_config)
# Optionally print layer information
net.print_layers()
print('Building TensorFlow graph...')
with tf.name_scope('Inputs'), tf.device("/cpu:0"):
# Placeholder for the learning rate. This will get ramped down dynamically.
lrate_in = tf.placeholder(tf.float32, name='lrate_in', shape=[])
# Defines the expression(s) that creates the network input.
noisy_input, noisy_target, clean_target = dataset_iter.get_next()
noisy_input_split = tf.split(noisy_input, submit_config.num_gpus)
noisy_target_split = tf.split(noisy_target, submit_config.num_gpus) # Split over multiple GPUs
# clean_target_split = tf.split(clean_target, submit_config.num_gpus)
# --------------------------------------------------------------------------------------------
# Optimizer initialization and setup:
# Define the loss function using the Optimizer helper class, this will take care of multi GPU
opt = Optimizer(learning_rate=lrate_in, **optimizer_config)
for gpu in range(submit_config.num_gpus):
with tf.device("/gpu:%d" % gpu):
# Create a clone for this network for other gpus to work on.
net_gpu = net if gpu == 0 else net.clone()
# Create the output expression by giving the input expression into the network.
denoised = net_gpu.get_output_for(noisy_input_split[gpu])
# Create the error function as the MSE between the target tensor and the denoised network output.
meansq_error = tf.reduce_mean(tf.square(noisy_target_split[gpu] - denoised))
# Create an autosummary that will average over all GPUs
with tf.control_dependencies([autosummary("Loss", meansq_error)]):
opt.register_gradients(meansq_error, net_gpu.trainables)
train_step = opt.apply_updates() # Defines the update function of the optimizer.
# Create a log file for Tensorboard
summary_log = tf._api.v1.summary.FileWriter(submit_config.results_dir)
summary_log.add_graph(tf.get_default_graph())
# --------------------------------------------------------------------------------------------
# Training and some milestone evaluation starts:
print('Training...')
time_maintenance = ctx.get_time_since_last_update()
ctx.update() # TODO: why parameterized in reference?
# The actual training loop
for i in range(iteration_count):
# Whether to stop the training or not should be asked from the context
if ctx.should_stop():
break
# Dump training status
if i % eval_interval == 0:
time_train = ctx.get_time_since_last_update()
time_total = ctx.get_time_since_start()
# Evaluate 'x' to draw one minbatch of inputs. Executes the operations defined in the dataset iterator.
# Evals the noisy input and clean target minibatch Tensor ops to numpy array of the minibatch.
[source_mb, target_mb] = tfutil.run([noisy_input, clean_target])
# Runs the noisy images through the network without training it. It is just for observing/evaluating.
# net.run expects numpy arrays to run through this network.
denoised = net.run(source_mb)
# array shape: [minibatch_size, channel_size, height, width]
util.save_image(submit_config, denoised[0], "img_{0}_y_pred.png".format(i))
util.save_image(submit_config, target_mb[0], "img_{0}_y.png".format(i))
util.save_image(submit_config, source_mb[0], "img_{0}_x_aug.png".format(i))
validation_set.evaluate(net, i, noise_augmenter.add_validation_noise_np)
print('iter %-10d time %-12s sec/eval %-7.1f sec/iter %-7.2f maintenance %-6.1f' % (
autosummary('Timing/iter', i),
dnnlib.util.format_time(autosummary('Timing/total_sec', time_total)),
autosummary('Timing/sec_per_eval', time_train),
autosummary('Timing/sec_per_iter', time_train / eval_interval),
autosummary('Timing/maintenance_sec', time_maintenance)))
dnnlib.tflib.autosummary.save_summaries(summary_log, i)
ctx.update()
time_maintenance = ctx.get_last_update_interval() - time_train
lrate = compute_ramped_down_lrate(i, iteration_count, ramp_down_perc, learning_rate)
# Apply the lrate value to the lrate_in placeholder for the optimizer.
tfutil.run([train_step], {lrate_in: lrate}) # Run the training update through the network in our session.
print("Elapsed time: {0}".format(dutil.format_time(ctx.get_time_since_start())))
util.save_snapshot(submit_config, net, 'final')
# Summary log and context should be closed at the end
summary_log.close()
ctx.close()
def main():
torch.multiprocessing.set_sharing_strategy('file_system')
print('[RUN] parse arguments')
args, framework, optimizer, data_loader_dict, tester_dict = option.parse_options()
print('[RUN] create result directories')
result_dir_dict = util.create_result_dir(args.result_dir, ['src', 'log', 'snapshot', 'test'])
util.copy_file(args.bash_file, args.result_dir)
util.copy_dir('./src', result_dir_dict['src'])
print('[RUN] create loggers')
train_log_dir = os.path.join(result_dir_dict['log'], 'train')
train_logger = SummaryWriter(train_log_dir)
print('[OPTIMIZER] learning rate:', optimizer.param_groups[0]['lr'])
n_batches = data_loader_dict['train'].__len__()
global_step = args.training_args['init_iter']
print('')
skip_flag = False
while True:
start_time = time.time()
for train_data_dict in data_loader_dict['train']:
batch_time = time.time() - start_time
if skip_flag:
skip_flag = False
else:
if global_step in args.snapshot_iters:
snapshot_dir = os.path.join(result_dir_dict['snapshot'], '%07d' % global_step)
util.save_snapshot(framework.network, optimizer, snapshot_dir)
if global_step in args.test_iters:
test_dir = os.path.join(result_dir_dict['test'], '%07d' % global_step)
util.run_testers(tester_dict, framework, data_loader_dict['test'], test_dir)
if args.training_args['max_iter'] <= global_step:
break
if global_step in args.training_args['lr_decay_schd'].keys():
util.update_learning_rate(optimizer, args.training_args['lr_decay_schd'][global_step])
train_loss_dict, train_time = \
train_network_one_step(args, framework, optimizer, train_data_dict, global_step)
if train_loss_dict is None:
skip_flag = True
train_data_dict.clear()
del train_data_dict
else:
if global_step % args.training_args['print_intv'] == 0:
iter_str = '[TRAINING] %d/%d:' % (global_step, args.training_args['max_iter'])
info_str = 'n_batches: %d, batch_time: %0.3f, train_time: %0.3f' % \
(n_batches, batch_time, train_time)
train_str = util.cvt_dict2str(train_loss_dict)
print(iter_str + '\n- ' + info_str + '\n- ' + train_str + '\n')
for key, value in train_loss_dict.items():
train_logger.add_scalar(key, value, global_step)
train_loss_dict.clear()
train_data_dict.clear()
del train_loss_dict, train_data_dict
global_step += 1
start_time = time.time()
if args.training_args['max_iter'] <= global_step:
break
train_logger.close()
def train(submit_config: dnnlib.SubmitConfig, iteration_count: int,
eval_interval: int, minibatch_size: int, learning_rate: float,
ramp_down_perc: float, noise: dict, validation_config: dict,
train_tfrecords: str, noise2noise: bool):
noise_augmenter = dnnlib.util.call_func_by_name(**noise)
validation_set = ValidationSet(submit_config)
validation_set.load(**validation_config)
# Create a run context (hides low level details, exposes simple API to manage the run)
ctx = dnnlib.RunContext(submit_config, config)
# Initialize TensorFlow graph and session using good default settings
tfutil.init_tf(config.tf_config)
dataset_iter = create_dataset(train_tfrecords, minibatch_size,
noise_augmenter.add_train_noise_tf)
# Construct the network using the Network helper class and a function defined in config.net_config
with tf.device("/gpu:0"):
net = tflib.Network(**config.net_config)
# Optionally print layer information
net.print_layers()
print('Building TensorFlow graph...')
with tf.name_scope('Inputs'), tf.device("/cpu:0"):
lrate_in = tf.compat.v1.placeholder(tf.float32,
name='lrate_in',
shape=[])
#print("DEBUG train:", "dataset iter got called")
noisy_input, noisy_target, clean_target = dataset_iter.get_next()
noisy_input_split = tf.split(noisy_input, submit_config.num_gpus)
noisy_target_split = tf.split(noisy_target, submit_config.num_gpus)
print(len(noisy_input_split), noisy_input_split)
clean_target_split = tf.split(clean_target, submit_config.num_gpus)
# Split [?, 3, 256, 256] across num_gpus over axis 0 (i.e. the batch)
# Define the loss function using the Optimizer helper class, this will take care of multi GPU
opt = tflib.Optimizer(learning_rate=lrate_in, **config.optimizer_config)
radii = np.arange(128).reshape(128, 1) #image size 256, binning = 3
radial_masks = np.apply_along_axis(radial_mask, 1, radii, 128, 128,
np.arange(0, 256), np.arange(0, 256),
20)
print("RN SHAPE!!!!!!!!!!:", radial_masks.shape)
radial_masks = np.expand_dims(radial_masks, 1) # (128, 1, 256, 256)
#radial_masks = np.squeeze(np.stack((radial_masks,) * 3, -1)) # 43, 3, 256, 256
#radial_masks = radial_masks.transpose([0, 3, 1, 2])
radial_masks = radial_masks.astype(np.complex64)
radial_masks = tf.expand_dims(radial_masks, 1)
rn = tf.compat.v1.placeholder_with_default(radial_masks,
[128, None, 1, 256, 256])
rn_split = tf.split(rn, submit_config.num_gpus, axis=1)
freq_nyq = int(np.floor(int(256) / 2.0))
spatial_freq = radii.astype(np.float32) / freq_nyq
spatial_freq = spatial_freq / max(spatial_freq)
for gpu in range(submit_config.num_gpus):
with tf.device("/gpu:%d" % gpu):
net_gpu = net if gpu == 0 else net.clone()
denoised_1 = net_gpu.get_output_for(noisy_input_split[gpu])
denoised_2 = net_gpu.get_output_for(noisy_target_split[gpu])
print(noisy_input_split[gpu].get_shape(),
rn_split[gpu].get_shape())
if noise2noise:
meansq_error = fourier_ring_correlation(
noisy_target_split[gpu], denoised_1, rn_split[gpu],
spatial_freq) - fourier_ring_correlation(
noisy_target_split[gpu] - denoised_2,
noisy_input_split[gpu] - denoised_1, rn_split[gpu],
spatial_freq)
else:
meansq_error = tf.reduce_mean(
tf.square(clean_target_split[gpu] - denoised))
# Create an autosummary that will average over all GPUs
#tf.summary.histogram(name, var)
with tf.control_dependencies([autosummary("Loss", meansq_error)]):
opt.register_gradients(meansq_error, net_gpu.trainables)
train_step = opt.apply_updates()
# Create a log file for Tensorboard
summary_log = tf.compat.v1.summary.FileWriter(submit_config.run_dir)
summary_log.add_graph(tf.compat.v1.get_default_graph())
print('Training...')
time_maintenance = ctx.get_time_since_last_update()
ctx.update(loss='run %d' % submit_config.run_id,
cur_epoch=0,
max_epoch=iteration_count)
# The actual training loop
for i in range(iteration_count):
# Whether to stop the training or not should be asked from the context
if ctx.should_stop():
break
# Dump training status
if i % eval_interval == 0:
time_train = ctx.get_time_since_last_update()
time_total = ctx.get_time_since_start()
print("DEBUG TRAIN!", noisy_input.dtype, noisy_input[0][0].dtype)
# Evaluate 'x' to draw a batch of inputs
[source_mb, target_mb] = tfutil.run([noisy_input, clean_target])
denoised = net.run(source_mb)
save_image(submit_config, denoised[0],
"img_{0}_y_pred.tif".format(i))
save_image(submit_config, target_mb[0], "img_{0}_y.tif".format(i))
save_image(submit_config, source_mb[0],
"img_{0}_x_aug.tif".format(i))
validation_set.evaluate(net, i,
noise_augmenter.add_validation_noise_np)
print(
'iter %-10d time %-12s sec/eval %-7.1f sec/iter %-7.2f maintenance %-6.1f'
% (autosummary('Timing/iter', i),
dnnlib.util.format_time(
autosummary('Timing/total_sec', time_total)),
autosummary('Timing/sec_per_eval', time_train),
autosummary('Timing/sec_per_iter',
time_train / eval_interval),
autosummary('Timing/maintenance_sec', time_maintenance)))
dnnlib.tflib.autosummary.save_summaries(summary_log, i)
ctx.update(loss='run %d' % submit_config.run_id,
cur_epoch=i,
max_epoch=iteration_count)
time_maintenance = ctx.get_last_update_interval() - time_train
save_snapshot(submit_config, net, str(i))
lrate = compute_ramped_down_lrate(i, iteration_count, ramp_down_perc,
learning_rate)
tfutil.run([train_step], {lrate_in: lrate})
print("Elapsed time: {0}".format(
util.format_time(ctx.get_time_since_start())))
save_snapshot(submit_config, net, 'final')
# Summary log and context should be closed at the end
summary_log.close()
ctx.close()