output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory,
hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a,
images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda(
).detach()
with Timer("Elapsed time in update: %f"):
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
torch.cuda.synchronize()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
with torch.no_grad():
test_image_outputs = trainer.sample(
test_display_images_a, test_display_images_b)
train_image_outputs = trainer.sample(
train_display_images_a, train_display_images_b)
write_2images(test_image_outputs, display_size,
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--config',
type=str,
default='configs/edges2handbags_folder.yaml',
help='Path to the config file.')
parser.add_argument('--output_path',
type=str,
default='.',
help="outputs path")
#resume option => [, default='730000']
parser.add_argument("--resume", default='150000', action="store_true")
parser.add_argument('--trainer',
type=str,
default='MUNIT',
help="MUNIT|UNIT")
opts = parser.parse_args()
cudnn.benchmark = True
# Load experiment setting
config = get_config(opts.config)
max_iter = config['max_iter']
display_size = config['display_size']
config['vgg_model_path'] = opts.output_path
# Setup model and data loader
if opts.trainer == 'MUNIT':
trainer = MUNIT_Trainer(config)
elif opts.trainer == 'UNIT':
trainer = UNIT_Trainer(config)
else:
sys.exit("Only support MUNIT|UNIT")
trainer.cuda()
train_loader_a, train_loader_b, test_loader_a, test_loader_b = get_all_data_loaders(
config)
train_display_images_a = torch.stack(
[train_loader_a.dataset[i] for i in range(display_size)]).cuda()
train_display_images_b = torch.stack(
[train_loader_b.dataset[i] for i in range(display_size)]).cuda()
test_display_images_a = torch.stack(
[test_loader_a.dataset[i] for i in range(display_size)]).cuda()
test_display_images_b = torch.stack(
[test_loader_b.dataset[i] for i in range(display_size)]).cuda()
# Setup logger and output folders
model_name = os.path.splitext(os.path.basename(opts.config))[0]
train_writer = tensorboardX.SummaryWriter(
os.path.join(opts.output_path + "/logs", model_name))
output_directory = os.path.join(opts.output_path + "/outputs", model_name)
checkpoint_directory, image_directory = prepare_sub_folder(
output_directory)
shutil.copy(opts.config, os.path.join(
output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory,
hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a,
images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda(
).detach()
with Timer("Elapsed time in update: %f"):
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
torch.cuda.synchronize()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
with torch.no_grad():
test_image_outputs = trainer.sample(
test_display_images_a, test_display_images_b)
train_image_outputs = trainer.sample(
train_display_images_a, train_display_images_b)
write_2images(test_image_outputs, display_size,
image_directory, 'test_%08d' % (iterations + 1))
write_2images(train_image_outputs, display_size,
image_directory, 'train_%08d' % (iterations + 1))
# HTML
write_html(output_directory + "/index.html", iterations + 1,
config['image_save_iter'], 'images')
if (iterations + 1) % config['image_display_iter'] == 0:
with torch.no_grad():
image_outputs = trainer.sample(train_display_images_a,
train_display_images_b)
write_2images(image_outputs, display_size, image_directory,
'train_current')
# Save network weights
if (iterations + 1) % config['snapshot_save_iter'] == 0:
trainer.save(checkpoint_directory, iterations)
iterations += 1
if iterations >= max_iter:
sys.exit('Finish training')
def main(argv):
(opts, args) = parser.parse_args(argv)
cudnn.benchmark = True
model_name = os.path.splitext(os.path.basename(opts.config))[0]
# Load experiment setting
config = get_config(opts.config)
max_iter = config['max_iter']
display_size = config['display_size']
# Setup model and data loader
trainer = MUNIT_Trainer(config)
trainer.cuda()
train_loader_a, train_loader_b, test_loader_a, test_loader_b = get_all_data_loaders(
config)
test_display_images_a = Variable(torch.stack(
[test_loader_a.dataset[i] for i in range(display_size)]).cuda(),
volatile=True)
test_display_images_b = Variable(torch.stack(
[test_loader_b.dataset[i] for i in range(display_size)]).cuda(),
volatile=True)
train_display_images_a = Variable(torch.stack(
[train_loader_a.dataset[i] for i in range(display_size)]).cuda(),
volatile=True)
train_display_images_b = Variable(torch.stack(
[train_loader_b.dataset[i] for i in range(display_size)]).cuda(),
volatile=True)
# Setup logger and output folders
train_writer = tensorboard.SummaryWriter(os.path.join(
opts.log, model_name))
output_directory = os.path.join(opts.outputs, model_name)
checkpoint_directory, image_directory = prepare_sub_folder(
output_directory)
shutil.copy(opts.config, os.path.join(
output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory) if opts.resume else 0
while True:
for it, (images_a,
images_b) in enumerate(izip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = Variable(images_a.cuda()), Variable(
images_b.cuda())
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
# Test set images
image_outputs = trainer.sample(test_display_images_a,
test_display_images_b)
write_images(
image_outputs, display_size,
'%s/gen_test%08d.jpg' % (image_directory, iterations + 1))
# Train set images
image_outputs = trainer.sample(train_display_images_a,
train_display_images_b)
write_images(
image_outputs, display_size,
'%s/gen_train%08d.jpg' % (image_directory, iterations + 1))
# HTML
write_html(output_directory + "/index.html", iterations + 1,
config['image_save_iter'], 'images')
if (iterations + 1) % config['image_save_iter'] == 0:
image_outputs = trainer.sample(test_display_images_a,
test_display_images_b)
write_images(image_outputs, display_size,
'%s/gen.jpg' % image_directory)
# Save network weights
if (iterations + 1) % config['snapshot_save_iter'] == 0:
trainer.save(checkpoint_directory, iterations)
iterations += 1
if iterations >= max_iter:
return
iterations = trainer.resume(checkpoint_directory,
hyperparameters=config) if opts.resume else 0
while True:
for it, (images_target_a,
images_target_b) in enumerate(zip(train_loader_a,
train_loader_b)):
trainer.update_learning_rate()
images_a = images_target_a[0].cuda().detach()
target_a = images_target_a[1].cuda().detach()
images_b = images_target_b[0].cuda().detach()
target_b = images_target_b[1].cuda().detach()
ids_b = images_target_b[2]
# Main training code
with Timer("Elapsed time in update: %f"):
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config, target_a,
iterations)
if iterations >= config['train_seg_iters']:
trainer.seg_update(images_a, images_b, target_a, target_b)
# Dump training stats in log file
if (iterations) % config['log_iter'] == 0:
print('Iteration: %08d/%08d' % (iterations, max_iter))
losses = write_loss(iterations, trainer, train_writer)
# Write images
if (iterations) % config['image_save_iter'] == 0:
with torch.no_grad():
train_image_outputs = trainer.sample(train_display_images_a,
train_display_images_b)
test_image_outputs = trainer.sample(test_display_images_a,
(images_as, images_bs, mask_s, sem_a, sem_b)) in enumerate(
zip(train_loader_a_w_mask, train_loader_b_w_mask,
synthetic_loader)):
with Timer("Elapsed time in update s: %f"):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda(
).detach()
mask_a, mask_b = mask_a.cuda().detach(), mask_b.cuda().detach()
images_as, images_bs, mask_s = images_as.cuda().detach(
), images_bs.cuda().detach(), mask_s.cuda().detach()
# Main training code
trainer.dis_update(images_a, images_b, config, comet_exp)
#Gen update
if (iterations + 1) % config["ratio_disc_gen"] == 0:
trainer.gen_update(images_a, images_b, config, mask_a,
mask_b, comet_exp)
#Domain classifier update
if config["domain_adv_w"] > 0:
trainer.domain_classifier_update(images_a, images_b,
config, comet_exp)
#Domain classifier s,r update
if trainer.use_classifier_sr and (
iterations +
1) % config["adaptation"]["classif_frequency"] == 0:
print(iterations + 1)
trainer.domain_classifier_sr_update(
images_a, images_b, False,
config["adaptation"]["dfeat_lambda"], iterations + 1,
comet_exp)
#Output domain classifier s,r update
if opts.resume else 0)
if config["semantic_w"] == 0:
while True:
for it, (images_a,
images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda(
).detach()
with Timer("Elapsed time in update: %f"):
# Main training code
trainer.dis_update(images_a, images_b, config, comet_exp)
if (iterations + 1) % config["ratio_disc_gen"] == 0:
trainer.gen_update(images_a,
images_b,
config,
comet_exp=comet_exp)
if config["domain_adv_w"] > 0:
trainer.domain_classifier_update(images_a, images_b,
config, comet_exp)
torch.cuda.synchronize()
# Write images
if (iterations + 1) % config["image_save_iter"] == 0:
with torch.no_grad():
test_image_outputs = trainer.sample(
test_display_images_a, test_display_images_b)
train_image_outputs = trainer.sample(
train_display_images_a, train_display_images_b)
write_2images(
test_image_outputs,
# Start training
iterations = trainer.resume(checkpoint_directory, hyperparameters=config) if opts.resume else 0
while True:
for it, (data_a, data_b) in enumerate(zip(train_loader_a, train_loader_b)): # to iterate along both lists
trainer.update_learning_rate()
images_a = data_a
images_b = data_b
images_a, images_b = images_a.cuda().detach(), images_b.cuda().detach()
# Main training code
trainer.dis_update(images_a, images_b, config)
if config['dis']['gan_type'] == 'ralsgan':
images_rand_a = random_sample_a.__next__()
images_rand_b = random_sample_b.__next__()
images_rand_a, images_rand_b = Variable(images_rand_a.cuda()), Variable(images_rand_b.cuda())
trainer.gen_update(images_a, images_b, config, images_rand_a, images_rand_b)
else:
trainer.gen_update(images_a, images_b, config)
torch.cuda.synchronize()
trainer.update_iter()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Model: %s, Iteration: %08d/%08d" % (model_name, iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Training logs
if (iterations + 1) % config['image_save_iter'] == 0:
iter_directory = os.path.join(output_directory+'/images', 'iter_'+str(iterations + 1).zfill(8))
if not os.path.exists(iter_directory):
print("Creating directory: {}".format(iter_directory))
def main():
from utils import get_all_data_loaders, prepare_sub_folder, write_html, write_loss, get_config, write_2images, Timer
import argparse
from torch.autograd import Variable
from trainer import MUNIT_Trainer, UNIT_Trainer
import torch.backends.cudnn as cudnn
import torch
# try:
# from itertools import izip as zip
# except ImportError: # will be 3.x series
# pass
import os
import sys
import tensorboardX
import shutil
os.environ["CUDA_VISIBLE_DEVICES"] = str(0)
parser = argparse.ArgumentParser()
parser.add_argument('--config',
type=str,
default='configs/edges2handbags_folder.yaml',
help='Path to the config file.')
parser.add_argument('--output_path',
type=str,
default='.',
help="outputs path")
parser.add_argument("--resume", action="store_true")
parser.add_argument('--trainer',
type=str,
default='MUNIT',
help="MUNIT|UNIT")
opts = parser.parse_args()
cudnn.benchmark = True
'''
Note: https://www.pytorchtutorial.com/when-should-we-set-cudnn-benchmark-to-true/
大部分情况下，设置这个 flag 可以让内置的 cuDNN 的 auto-tuner 自动寻找最适合当前配置的高效算法，来达到优化运行效率的问题
1. 如果网络的输入数据维度或类型上变化不大，设置 torch.backends.cudnn.benchmark = true 可以增加运行效率；
2. 如果网络的输入数据在每次 iteration 都变化的话，会导致 cnDNN 每次都会去寻找一遍最优配置，这样反而会降低运行效率。
'''
# Load experiment setting
config = get_config(opts.config)
max_iter = config['max_iter']
display_size = config['display_size']
config['vgg_model_path'] = opts.output_path
# Setup model and data loader
if opts.trainer == 'MUNIT':
trainer = MUNIT_Trainer(config)
elif opts.trainer == 'UNIT':
trainer = UNIT_Trainer(config)
else:
sys.exit("Only support MUNIT|UNIT")
trainer.cuda()
train_loader_a, train_loader_b, test_loader_a, test_loader_b = get_all_data_loaders(
config)
train_display_images_a = torch.stack(
[train_loader_a.dataset[i] for i in range(display_size)]).cuda()
train_display_images_b = torch.stack(
[train_loader_b.dataset[i] for i in range(display_size)]).cuda()
test_display_images_a = torch.stack(
[test_loader_a.dataset[i] for i in range(display_size)]).cuda()
test_display_images_b = torch.stack(
[test_loader_b.dataset[i] for i in range(display_size)]).cuda()
# Setup logger and output folders
model_name = os.path.splitext(os.path.basename(opts.config))[0]
train_writer = tensorboardX.SummaryWriter(
os.path.join(opts.output_path + "/logs", model_name))
output_directory = os.path.join(opts.output_path + "/outputs", model_name)
checkpoint_directory, image_directory = prepare_sub_folder(
output_directory)
shutil.copy(opts.config, os.path.join(
output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory,
hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a,
images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda(
).detach()
with Timer("Elapsed time in update: %f"):
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
torch.cuda.synchronize()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
with torch.no_grad():
test_image_outputs = trainer.sample(
test_display_images_a, test_display_images_b)
train_image_outputs = trainer.sample(
train_display_images_a, train_display_images_b)
write_2images(test_image_outputs, display_size,
image_directory, 'test_%08d' % (iterations + 1))
write_2images(train_image_outputs, display_size,
image_directory, 'train_%08d' % (iterations + 1))
# HTML
write_html(output_directory + "/index.html", iterations + 1,
config['image_save_iter'], 'images')
if (iterations + 1) % config['image_display_iter'] == 0:
with torch.no_grad():
image_outputs = trainer.sample(train_display_images_a,
train_display_images_b)
write_2images(image_outputs, display_size, image_directory,
'train_current')
# Save network weights
if (iterations + 1) % config['snapshot_save_iter'] == 0:
trainer.save(checkpoint_directory, iterations)
iterations += 1
if iterations >= max_iter:
sys.exit('Finish training')
labels_2 = labels_list[index_2]
use_1 = use_list[index_1]
use_2 = use_list[index_2]
images_1, images_2 = Variable(images_1.cuda()), Variable(images_2.cuda())
# Main training code.
if (ep + 1) <= int(0.75 * epochs):
# If in Full Training mode.
trainer.set_sup_trainable(True)
trainer.set_gen_trainable(True)
trainer.dis_update(images_1, images_2, index_1, index_2, config)
trainer.gen_update(images_1, images_2, index_1, index_2, config)
else:
# If in Supervision Tuning mode.
trainer.set_sup_trainable(True)
trainer.set_gen_trainable(False)
labels_1 = labels_1.to(dtype=torch.long)
labels_1[labels_1 > 0] = 1
labels_1 = Variable(labels_1.cuda(), requires_grad=False)
labels_2 = labels_2.to(dtype=torch.long)
labels_2[labels_2 > 0] = 1
labels_2 = Variable(labels_2.cuda(), requires_grad=False)
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda().detach()
# labels_a, labels_b = labels_a.cuda().detach(), labels_b.cuda().detach()
labels_b = labels_b.cuda().detach()
images_a_limited, labels_a_limited = images_a_limited.cuda().detach(
), labels_a_limited.cuda().detach()
with Timer("Elapsed time in update: %f"):
# Main training code
# time_start_iter = time()
trainer.dis_update(images_a, images_b, config)
# time_dis = time()
# print(f'Dis: {time_dis - time_start_iter}', end=" ")
trainer.gen_update(images_a, [images_b, labels_b], config,
[images_a_limited, labels_a_limited])
# time_gen = time()
# print(f'Gen: {time_gen - time_dis}', end=" ")
trainer.cla_update([images_a_limited, labels_a_limited],
[images_b, labels_b])
# time_con_cla = time()
# print(f'Cla: {time_con_cla - time_gen}')
torch.cuda.synchronize()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
sys.exit('Stop it!!')
model_name = os.path.splitext(os.path.basename(opts.config))[0]
train_writer = tensorboardX.SummaryWriter(os.path.join(opts.output_path + "/logs", model_name))
output_directory = os.path.join(opts.output_path + "/outputs", model_name)
checkpoint_directory, image_directory = prepare_sub_folder(output_directory)
shutil.copy(opts.config, os.path.join(output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory, hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a, images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = Variable(images_a.cuda()), Variable(images_b.cuda())
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
# Test set images
image_outputs = trainer.sample(test_display_images_a, test_display_images_b)
write_2images(image_outputs, display_size, image_directory, 'test_%08d' % (iterations + 1))
# Train set images
image_outputs = trainer.sample(train_display_images_a, train_display_images_b)
write_2images(image_outputs, display_size, image_directory, 'train_%08d' % (iterations + 1))
# HTML
os.path.join(output_directory,
'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory,
hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a,
images_b) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b = images_a.cuda().detach(), images_b.cuda().detach()
with Timer("update_time: %f"):
# Main training code
loss_dis_total = trainer.dis_update(images_a, images_b, config)
loss_gen_total, loss_recon_x, loss_recon_s, loss_recon_c, loss_cycrecon, loss_vgg = trainer.gen_update(
images_a, images_b, config)
torch.cuda.synchronize()
# loss_dis_total = trainer.dis_update(images_a, images_b, config)
# loss_gen_total, loss_recon_x, loss_recon_s, loss_recon_c, loss_cycrecon, loss_vgg= trainer.gen_update(images_a, images_b, config)
print(
" | dis_los: %9f | gen_los_total: %9f | recon_x_los: %9f | recon_s_los: %9f | recon_c_los: %9f | cycle_los: %9f | vgg_los: %9f "
% (loss_dis_total, loss_gen_total, loss_recon_x, loss_recon_s,
loss_recon_c, loss_cycrecon, loss_vgg))
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
train_writer = tensorboardX.SummaryWriter(os.path.join(opts.output_path + "/logs", model_name))
output_directory = os.path.join(opts.output_path + "/outputs", model_name)
checkpoint_directory, image_directory = prepare_sub_folder(output_directory)
shutil.copy(opts.config, os.path.join(output_directory, 'config.yaml')) # copy config file to output folder
# Start training
iterations = trainer.resume(checkpoint_directory, hyperparameters=config) if opts.resume else 0
while True:
for it, (images_a, (images_b,label_b)) in enumerate(zip(train_loader_a, train_loader_b)):
trainer.update_learning_rate()
images_a, images_b, label_b= images_a.cuda().detach(), images_b.cuda().detach(), label_b.cuda().detach()
with Timer("Elapsed time in update: %f"):
# Main training code
trainer.dis_update(images_a, images_b, config, label_b=label_b)
trainer.gen_update(images_a, images_b, config, label_b=label_b)
torch.cuda.synchronize()
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
print("Iteration: %08d/%08d" % (iterations + 1, max_iter))
write_loss(iterations, trainer, train_writer)
# Write images
if (iterations + 1) % config['image_save_iter'] == 0:
with torch.no_grad():
test_image_outputs = trainer.sample(test_display_images_a, test_display_images_b)
train_image_outputs = trainer.sample(train_display_images_a, train_display_images_b)
write_2images(test_image_outputs, display_size, image_directory, 'test_%08d' % (iterations + 1))
write_2images(train_image_outputs, display_size, image_directory, 'train_%08d' % (iterations + 1))
# HTML
def main(argv):
(opts, args) = parser.parse_args(argv)
cudnn.benchmark = True
# Load experiment setting
config = get_config(opts.config)
max_iter = config['max_iter']
# Setup logger and output folders
output_subfolders = prepare_logging_folders(config['output_root'],
config['experiment_name'])
logger = create_logger(
os.path.join(output_subfolders['logs'], 'train_log.log'))
shutil.copy(opts.config,
os.path.join(
output_subfolders['logs'],
'config.yaml')) # copy config file to output folder
tb_logger = tensorboard_logger.Logger(output_subfolders['logs'])
logger.info('============ Initialized logger ============')
logger.info('Config File: {}'.format(opts.config))
# Setup model and data loader
trainer = MUNIT_Trainer(config, opts)
trainer.cuda()
loaders = get_all_data_loaders(config)
val_display_images = next(iter(loaders['val']))
logger.info('Test images: {}'.format(val_display_images['A_paths']))
# Start training
iterations = trainer.resume(opts.model_path,
hyperparameters=config) if opts.resume else 0
while True:
for it, images in enumerate(loaders['train']):
trainer.update_learning_rate()
images_a = images['A']
images_b = images['B']
images_a, images_b = Variable(images_a.cuda()), Variable(
images_b.cuda())
# Main training code
trainer.dis_update(images_a, images_b, config)
trainer.gen_update(images_a, images_b, config)
# Dump training stats in log file
if (iterations + 1) % config['log_iter'] == 0:
for tag, value in trainer.loss.items():
tb_logger.scalar_summary(tag, value, iterations)
val_output_imgs = trainer.sample(
Variable(val_display_images['A'].cuda()),
Variable(val_display_images['B'].cuda()))
tb_imgs = []
for imgs in val_output_imgs.values():
tb_imgs.append(torch.cat(torch.unbind(imgs, 0), dim=2))
tb_logger.image_summary(list(val_output_imgs.keys()), tb_imgs,
iterations)
if (iterations + 1) % config['print_iter'] == 0:
logger.info(
"Iteration: {:08}/{:08} Discriminator Loss: {:.4f} Generator Loss: {:.4f}"
.format(iterations + 1, max_iter, trainer.loss['D/total'],
trainer.loss['G/total']))
# Write images
# if (iterations + 1) % config['image_save_iter'] == 0:
# val_output_imgs = trainer.sample(
# Variable(val_display_images['A'].cuda()),
# Variable(val_display_images['B'].cuda()))
#
# for key, imgs in val_output_imgs.items():
# key = key.replace('/', '_')
# write_images(imgs, config['display_size'], '{}/{}_{:08}.jpg'.format(output_subfolders['images'], key, iterations+1))
#
# logger.info('Saved images to: {}'.format(output_subfolders['images']))
# Save network weights
if (iterations + 1) % config['snapshot_save_iter'] == 0:
trainer.save(output_subfolders['models'], iterations)
iterations += 1
if iterations >= max_iter:
return
