def main(argv):
# Allow running multiple at once
set_gpu_memory(FLAGS.gpumem)
# Figure out the log and model directory filenames
assert FLAGS.uid != "", "uid cannot be an empty string"
model_dir, log_dir = get_directory_names()
if not os.path.exists(model_dir):
os.makedirs(model_dir)
if not os.path.exists(log_dir):
os.makedirs(log_dir)
# Write config file about what dataset we're using, sources, target, etc.
file_utils.write_config_from_args(log_dir)
# Load datasets
source_datasets, target_dataset = load_datasets.load_da(FLAGS.dataset,
FLAGS.sources, FLAGS.target, test=FLAGS.test)
# for x in source_datasets:
# print (x)
# source_train_iterators = [iter(x.train) for x in source_datasets]
# print (len(source_train_iterators))
# for x in source_train_iterators:
# a = next(x)
# print (a)
# data_sources = [next(x) for x in source_train_iterators]
# data_sources = [next(x) for x in source_train_iterators]
# data_sources = [next(x) for x in source_train_iterators]
# Need to know which iteration for learning rate schedule
global_step = tf.Variable(0, name="global_step", trainable=False)
# Load the method, model, etc.
method = methods.get_method(FLAGS.method,
source_datasets=source_datasets,
target_dataset=target_dataset,
model_name=FLAGS.model,
global_step=global_step,
total_steps=FLAGS.steps,
ensemble_size=FLAGS.ensemble,
moving_average=FLAGS.moving_average,
share_most_weights=FLAGS.share_most_weights)
# Check that this method is supposed to be trainable. If not, we're done.
# (Basically, we just wanted to write the config file for non-trainable
# models.)
if not method.trainable:
print("Method not trainable. Exiting now.")
return
# Checkpoints
checkpoint = tf.train.Checkpoint(
global_step=global_step, **method.checkpoint_variables)
checkpoint_manager = CheckpointManager(checkpoint, model_dir, log_dir)
checkpoint_manager.restore_latest()
# Metrics
has_target_domain = target_dataset is not None
metrics = Metrics(log_dir, method, source_datasets, target_dataset,
has_target_domain)
# Start training
#
# TODO maybe eventually rewrite this in the more-standard Keras way
# See: https://www.tensorflow.org/guide/keras/train_and_evaluate
for i in range(int(global_step), FLAGS.steps+1):
t = time.time()
data_sources, data_target = method.train_step()
global_step.assign_add(1)
t = time.time() - t
if FLAGS.time_training:
print(int(global_step), t, sep=",")
continue # skip evaluation, checkpointing, etc. when timing
if i%1000 == 0:
print("step %d took %f seconds"%(int(global_step), t))
sys.stdout.flush() # otherwise waits till the end to flush on Kamiak
# Metrics on training/validation data
if FLAGS.log_train_steps != 0 and i%FLAGS.log_train_steps == 0:
metrics.train(data_sources, data_target, global_step, t)
# Evaluate every log_val_steps but also at the last step
validation_accuracy_source = None
validation_accuracy_target = None
if (FLAGS.log_val_steps != 0 and i%FLAGS.log_val_steps == 0) \
or i == FLAGS.steps:
validation_accuracy_source, validation_accuracy_target \
= metrics.test(global_step)
print(validation_accuracy_source,validation_accuracy_target)
# Checkpoints -- Save either if at the right model step or if we found
# a new validation accuracy. If this is better than the previous best
# model, we need to make a new checkpoint so we can restore from this
# step with the best accuracy.
if (FLAGS.model_steps != 0 and i%FLAGS.model_steps == 0) \
or validation_accuracy_source is not None:
checkpoint_manager.save(int(global_step-1),
validation_accuracy_source, validation_accuracy_target)
# Plots
if FLAGS.log_plots_steps != 0 and i%FLAGS.log_plots_steps == 0:
metrics.plots(global_step)
# We're done -- used for hyperparameter tuning
file_utils.write_finished(log_dir)
def process_model(log_dir, model_dir, config, gpumem, multi_gpu):
""" Evaluate a model on the train/test data and compute the results """
setup_gpu_for_process(gpumem, multi_gpu)
dataset_name = config["dataset"]
method_name = config["method"]
model_name = config["model"]
sources = config["sources"]
target = config["target"]
moving_average = config["moving_average"]
ensemble_size = config["ensemble"]
share_most_weights = config["share_most_weights"]
# Load datasets
source_datasets, target_dataset = load_datasets.load_da(dataset_name,
sources, target, test=FLAGS.test)
# Load the method, model, etc.
# Note: {global,num}_step are for training, so it doesn't matter what
# we set them to here
method = methods.get_method(method_name,
source_datasets=source_datasets,
target_dataset=target_dataset,
model_name=model_name,
global_step=1, total_steps=1,
moving_average=moving_average,
ensemble_size=ensemble_size,
share_most_weights=share_most_weights)
# Load model from checkpoint (if there's anything in the checkpoint)
if len(method.checkpoint_variables) > 0:
checkpoint = tf.train.Checkpoint(**method.checkpoint_variables)
checkpoint_manager = CheckpointManager(checkpoint, model_dir, log_dir)
if FLAGS.selection == "last":
checkpoint_manager.restore_latest()
max_accuracy_step = checkpoint_manager.latest_step()
max_accuracy = None # We don't really care...
found = checkpoint_manager.found_last
elif FLAGS.selection == "best_source":
checkpoint_manager.restore_best_source()
max_accuracy_step = checkpoint_manager.best_step_source()
max_accuracy = checkpoint_manager.best_validation_source
found = checkpoint_manager.found_best_source
elif FLAGS.selection == "best_target":
checkpoint_manager.restore_best_target()
max_accuracy_step = checkpoint_manager.best_step_target()
max_accuracy = checkpoint_manager.best_validation_target
found = checkpoint_manager.found_best_target
else:
raise NotImplementedError("unknown --selection argument")
else:
max_accuracy_step = None
max_accuracy = None
found = True
# Metrics
has_target_domain = target_dataset is not None
metrics = Metrics(log_dir, method, source_datasets, target_dataset,
has_target_domain)
# If not found, give up
if not found:
return log_dir, model_dir, config, {}, None, None
# Evaluate on both datasets
metrics.train_eval()
metrics.test(evaluation=True)
# Get results
results = metrics.results()
return log_dir, model_dir, config, results, max_accuracy_step, max_accuracy
def process_model(log_dir, model_dir, source, target, model_name, method_name,
gpumem, multi_gpu):
""" Evaluate a model on the train/test data and compute the results """
# We need to do this in the process since otherwise TF can't access cuDNN
# for some reason. But, we only need to do this the first time we create the
# process. It'll error on any subsequent calls (since the pool re-uses
# process).
try:
set_gpu_memory(FLAGS.gpumem)
except RuntimeError:
pass # Ignore: "RuntimeError: GPU options must be set at program startup"
# Get what GPU to run this on, otherwise it'll default to whatever the
# first one is
if multi_gpu:
# Get all GPUs SLURM gave to us and what process in the pool this is
available_gpus = get_gpus()
pool_id = get_pool_id()
# Pick which one based on pool id
gpu = available_gpus[pool_id]
# Only let TensorFlow see this GPU. I tried tf.device, but somehow
# each process still put some stuff into memory on every GPU.
os.environ["CUDA_VISIBLE_DEVICES"] = str(gpu)
# Load datasets
if target != "":
source_dataset, target_dataset = load_datasets.load_da(source, target,
test=True)
assert source_dataset.num_classes == target_dataset.num_classes, \
"Adapting from source to target with different classes not supported"
else:
raise NotImplementedError("currently don't support only source")
source_dataset = load_datasets.load(source, test=True)
target_dataset = None
# Evaluation datasets if we have the dataset
source_dataset_train = source_dataset.train_evaluation
target_dataset_train = target_dataset.train_evaluation \
if target_dataset is not None else None
source_dataset_test = source_dataset.test_evaluation
target_dataset_test = target_dataset.test_evaluation \
if target_dataset is not None else None
# Information about domains
num_classes = source_dataset.num_classes
# Build our model
# Note: {global,num}_step are for training, so it doesn't matter what
# we set them to here
global_step = 1
num_steps = 1
model = DomainAdaptationModel(num_classes, model_name,
global_step, num_steps)
# Does this method use a target classifier?
has_target_classifier = method_name in ["pseudo", "instance"] \
and FLAGS.target_classifier
# Load model from checkpoint
checkpoint = tf.train.Checkpoint(model=model)
checkpoint_manager = CheckpointManager(checkpoint, model_dir, log_dir,
target=has_target_classifier)
if FLAGS.last:
checkpoint_manager.restore_latest()
max_accuracy_step = checkpoint_manager.latest_step()
max_accuracy = 0 # We don't really care...
else:
checkpoint_manager.restore_best(FLAGS.best_target)
max_accuracy_step = checkpoint_manager.best_step(FLAGS.best_target)
if has_target_classifier and FLAGS.best_target:
max_accuracy = checkpoint_manager.best_target_validation
else:
max_accuracy = checkpoint_manager.best_validation
# Print which step we're loading the model for
print(log_dir + "," + source + "," + target + ","
+ method_name + "," + model_name + ","
+ str(max_accuracy_step) + "," + str(max_accuracy))
# If not found, give up
if not checkpoint_manager.found:
return source, target, model_name, method_name, \
None, None, None, None, \
None, None, None, None
# Metrics
have_target_domain = target_dataset is not None
metrics = Metrics(log_dir, source_dataset,
None, None, have_target_domain,
target_classifier=has_target_classifier,
enable_compile=False)
# Evaluate on both datasets
metrics.train(model, source_dataset_train, target_dataset_train, evaluation=True)
metrics.test(model, source_dataset_test, target_dataset_test, evaluation=True)
# Get results
results = metrics.results()
s_train = results["accuracy_task/source/training"]
s_test = results["accuracy_task/source/validation"]
target_s_train = None
target_s_test = None
target_t_train = None
target_t_test = None
if has_target_classifier:
target_s_train = results["accuracy_target/source/training"]
target_s_test = results["accuracy_target/source/validation"]
if target_dataset is not None:
t_train = results["accuracy_task/target/training"]
t_test = results["accuracy_task/target/validation"]
if has_target_classifier:
target_t_train = results["accuracy_target/target/training"]
target_t_test = results["accuracy_target/target/validation"]
else:
t_train = None
t_test = None
return log_dir, source, target, model_name, method_name, \
s_train, t_train, s_test, t_test, \
target_s_train, target_s_test, target_t_train, target_t_test
def main(argv):
# Allow running multiple at once
set_gpu_memory(FLAGS.gpumem)
# Figure out the log and model directory filenames
model_dir, log_dir = get_directory_names()
if not os.path.exists(model_dir):
os.makedirs(model_dir)
if not os.path.exists(log_dir):
os.makedirs(log_dir)
# We adapt for any of the methods other than "none" (no adaptation)
adapt = FLAGS.method != "none"
# For adaptation, we'll be concatenating together half source and half target
# data, so to keep the batch_size about the same, we'll cut it in half
train_batch = FLAGS.train_batch
if adapt and FLAGS.use_grl:
train_batch = train_batch // 2
# Input training data
#
# Note: "It is worth noting that only the training sets of the small image
# datasets were used during training; the test sets used for reporting
# scores only." (self-ensembling) -- so, only use *_test for evaluation.
# However, for now we'll use 1000 random target test samples for the
# validation dataset (as is common).
if FLAGS.target != "":
source_dataset, target_dataset = load_datasets.load_da(
FLAGS.source,
FLAGS.target,
test=FLAGS.test,
train_batch=train_batch)
assert source_dataset.num_classes == target_dataset.num_classes, \
"Adapting from source to target with different classes not supported"
else:
raise NotImplementedError("currently don't support only source")
source_dataset = load_datasets.load(FLAGS.source,
test=FLAGS.test,
train_batch=train_batch)
target_dataset = None
# Iterator and evaluation datasets if we have the dataset
source_iter = iter(source_dataset.train)
source_dataset_eval = source_dataset.test_evaluation
target_iter = iter(target_dataset.train) \
if target_dataset is not None else None
target_dataset_eval = target_dataset.test_evaluation \
if target_dataset is not None else None
# Information about domains
num_classes = source_dataset.num_classes
# Loss functions
task_loss = models.make_task_loss(adapt and FLAGS.use_grl)
domain_loss = models.make_domain_loss(adapt)
weighted_task_loss = models.make_weighted_loss()
# We need to know where we are in training for the GRL lambda schedule
global_step = tf.Variable(0, name="global_step", trainable=False)
# Build our model
model = models.DomainAdaptationModel(num_classes,
FLAGS.model,
global_step,
FLAGS.steps,
use_grl=FLAGS.use_grl)
# Optimizers
opt = tf.keras.optimizers.Adam(FLAGS.lr)
d_opt = tf.keras.optimizers.Adam(FLAGS.lr * FLAGS.lr_domain_mult)
# For GAN-like training (train_step_gan), we'll weight by the GRL schedule
# to make it more equivalent to when use_grl=True.
grl_schedule = models.DannGrlSchedule(FLAGS.steps)
# Target classifier optimizer if target_classifier, otherwise the optimizer
# for the task-classifier when running on pseudo-labeled data
has_target_classifier = FLAGS.method in ["pseudo", "instance"]
t_opt = tf.keras.optimizers.Adam(FLAGS.lr * FLAGS.lr_target_mult)
# Checkpoints
checkpoint = tf.train.Checkpoint(global_step=global_step,
opt=opt,
d_opt=d_opt,
t_opt=t_opt,
model=model)
checkpoint_manager = CheckpointManager(checkpoint,
model_dir,
log_dir,
target=has_target_classifier)
checkpoint_manager.restore_latest()
# Metrics
has_target_domain = target_dataset is not None
metrics = Metrics(log_dir,
source_dataset,
task_loss,
domain_loss,
has_target_domain,
has_target_classifier,
enable_compile=FLAGS.compile_metrics)
# Start training
for i in range(int(global_step), FLAGS.steps + 1):
# Get data for this iteration
data_a = next(source_iter)
data_b = next(target_iter) if target_iter is not None else None
t = time.time()
step_args = (data_a, data_b, model, opt, d_opt, task_loss, domain_loss)
if adapt and FLAGS.use_grl:
train_step_grl(*step_args)
elif adapt:
instance_weights = train_step_gan(*step_args, grl_schedule,
global_step)
else:
train_step_none(*step_args)
if FLAGS.method == "pseudo":
# We'll ignore the real labels, so just get the data
x, _ = data_b
# Pseudo-label target data
if FLAGS.use_domain_confidence:
task_y_pred, weights = pseudo_label_domain(x, model)
else:
task_y_pred, weights = pseudo_label_task(x, model)
# Create new data with same input by pseudo-labels not true labels
data_b_pseudo = (x, task_y_pred)
# Train target classifier on pseudo-labeled data, weighted
# by probability that it's source data (i.e. higher confidence)
train_step_target(data_b_pseudo, weights, model, t_opt,
weighted_task_loss)
elif FLAGS.method == "instance":
# Train target classifier on source data, but weighted
# by probability that it's target data
train_step_target(data_a, instance_weights, model, t_opt,
weighted_task_loss)
global_step.assign_add(1)
t = time.time() - t
if i % 10 == 0:
logging.info("step %d took %f seconds", int(global_step), t)
# Metrics on training/validation data
if i % FLAGS.log_train_steps == 0:
metrics.train(model, data_a, data_b, global_step, t)
validation_accuracy = None
if i % FLAGS.log_val_steps == 0:
validation_accuracy, target_validation_accuracy = metrics.test(
model, source_dataset_eval, target_dataset_eval, global_step)
# Checkpoints -- Save either if at the right model step or if we found
# a new validation accuracy. If this is better than the previous best
# model, we need to make a new checkpoint so we can restore from this
# step with the best accuracy.
if i % FLAGS.model_steps == 0 or validation_accuracy is not None:
checkpoint_manager.save(int(global_step - 1), validation_accuracy,
target_validation_accuracy)
# We're done -- used for hyperparameter tuning
write_finished(log_dir)