def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(config['ema_decay']))
G_ema = model.Generator(**{**config, 'skip_init':True,
'no_optim': True}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# Consider automatically reducing SN_eps?
GD = model.G_D(G, D)
print(G)
print(D)
print('Number of params in G: {} D: {}'.format(
*[sum([np.prod(p.shape) for p in net.parameters()]) for net in [G,D]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {'itr': 0, 'epoch': 0, 'save_num': 0, 'save_best_num': 0,
'best_IS': 0, 'best_FID': 999999, 'config': config}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(G, D, state_dict,
config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
#test_log = utils.MetricsLogger(test_metrics_fname,
# reinitialize=(not config['resume']))
test_log=LogWriter(logdir='%s/%s_log' % (config['logs_root'],
experiment_name))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config, state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps']
* config['num_D_accumulations'])
loaders = utils.get_data_loaders(**{**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']})
# Prepare inception metrics: FID and IS
get_inception_metrics = inception_utils.prepare_inception_metrics(config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'],
device=device, fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size, G.dim_z,
config['n_classes'], device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_,
ema, state_dict, config)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(utils.sample,
G=(G_ema if config['ema'] and config['use_ema']
else G),
z_=z_, y_=y_, config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
x, y=x, y.astype(np.int64) ## special handling for paddle dataloader
if config['ema']:
G_ema.train()
metrics = train(x, y)
train_log.log(itr=int(state_dict['itr']), **metrics)
for tag in metrics:
try:
test_log.add_scalar(step=int(state_dict['itr']),tag="train/"+tag,value=float(metrics[tag]))
except:
pass
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{**utils.get_SVs(G, 'G'), **utils.get_SVs(D, 'D')})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(['itr: %d' % state_dict['itr']]
+ ['%s : %+4.3f' % (key, metrics[key])
for key in metrics]), end=' ')
else:
pbar.set_description(', '.join(['itr: %d' % state_dict['itr']]
+ ['%s : %+4.3f' % (key, metrics[key])
for key in metrics]))
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y,
state_dict, config, experiment_name)
# Test every specified interval
if not (state_dict['itr'] % config['test_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log)
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
E = model.ImgEncoder(**config).to(device)
# E = model.Encoder(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{**config, 'skip_init': True,
'no_optim': True}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GDE = model.G_D_E(G, D, E)
print('Number of params in G: {} D: {} E: {}'.format(
*[sum([p.data.nelement() for p in net.parameters()]) for net in [G, D, E]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {'itr': 0, 'epoch': 0, 'save_num': 0, 'save_best_num': 0,
'best_IS': 0, 'best_FID': 999999, 'config': config}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(G, D, E, state_dict,
config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
if config['parallel']:
GDE = nn.DataParallel(GDE)
if config['cross_replica']:
patch_replication_callback(GDE)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps']
* config['num_D_accumulations'])
loaders, train_dataset = utils.get_data_loaders(**{**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']})
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'],
device=device, fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size, G.dim_z,
config['n_classes'], device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
print("fixed_y original: {} {}".format(fixed_y.shape, fixed_y[:10]))
## TODO: change the sample method to sample x and y
fixed_x, fixed_y_of_x = utils.prepare_x_y(G_batch_size, train_dataset, experiment_name, config, device=device)
# Build image pool to prevent mode collapes
if config['img_pool_size'] != 0:
img_pool = ImagePool(config['img_pool_size'], train_dataset.num_class,\
save_dir=os.path.join(config['imgbuffer_root'], experiment_name),
resume_buffer=config['resume_buffer'])
else:
img_pool = None
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, E, GDE,
ema, state_dict, config, img_pool)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(utils.sample,
G=(G_ema if config['ema'] and config['use_ema']
else G),
z_=z_, y_=y_, config=config)
# print('Beginning training at epoch %f...' % (state_dict['itr'] * D_batch_size / len(train_dataset)))
print("Beginning testing at Epoch {} (iteration {})".format(state_dict['epoch'], state_dict['itr']))
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
# vc visualization
# # print("VC visualization ===============")
# activation_extract(G, D, E, G_ema, fixed_x, fixed_y_of_x, z_, y_,
# state_dict, config, experiment_name, device, normal_eval=False, eval_vc=True, return_mask=False)
# normal activation
print("Normal activation ===============")
activation_extract(G, D, E, G_ema, fixed_x, fixed_y_of_x, z_, y_,
state_dict, config, experiment_name, device, normal_eval=True, eval_vc=False, return_mask=False) # produce normal fully activated images
def run(config):
config['resolution'] = imsize_dict[config['dataset']]
config['n_classes'] = nclass_dict[config['dataset']]
config['G_activation'] = activation_dict[config['G_nl']]
config['D_activation'] = activation_dict[config['D_nl']]
if config['resume']:
config['skip_init'] = True
config = update_config_roots(config)
device = 'cuda'
utils_Task1_KLWGAN_Simulation_Experiment.seed_rng(config['seed'])
utils_Task1_KLWGAN_Simulation_Experiment.prepare_root(config)
torch.backends.cudnn.benchmark = True
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name'] else utils_Task1_KLWGAN_Simulation_Experiment.name_from_config(config))
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
if config['ema']:
G_ema = model.Generator(**{**config, 'skip_init': True, 'no_optim': True}).to(device)
ema = utils_Task1_KLWGAN_Simulation_Experiment.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
if config['G_fp16']:
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
D = D.half()
GD = model.G_D(G, D, config['conditional'])
state_dict = {'itr': 0, 'epoch': 0, 'save_num': 0, 'save_best_num': 0, 'best_IS': 0, 'best_FID': 999999, 'config': config}
if config['resume']:
utils_Task1_KLWGAN_Simulation_Experiment.load_weights(G, D, state_dict, config['weights_root'], experiment_name, config['load_weights'] if config['load_weights'] else None, G_ema if config['ema'] else None)
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'], experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
test_log = utils_Task1_KLWGAN_Simulation_Experiment.MetricsLogger(test_metrics_fname, reinitialize=(not config['resume']))
train_log = utils_Task1_KLWGAN_Simulation_Experiment.MyLogger(train_metrics_fname, reinitialize=(not config['resume']), logstyle=config['logstyle'])
utils_Task1_KLWGAN_Simulation_Experiment.write_metadata(config['logs_root'], experiment_name, config, state_dict)
D_batch_size = (config['batch_size'] * config['num_D_steps'] * config['num_D_accumulations'])
# Use: config['abnormal_class']
#print(config['abnormal_class'])
abnormal_class = config['abnormal_class']
select_dataset = config['select_dataset']
#print(config['select_dataset'])
#print(select_dataset)
loaders = utils_Task1_KLWGAN_Simulation_Experiment.get_data_loaders(**{**config, 'batch_size': D_batch_size, 'start_itr': state_dict['itr'], 'abnormal_class': abnormal_class, 'select_dataset': select_dataset})
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils_Task1_KLWGAN_Simulation_Experiment.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'], device=device, fp16=config['G_fp16'])
fixed_z, fixed_y = utils_Task1_KLWGAN_Simulation_Experiment.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'], device=device, fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
if not config['conditional']:
fixed_y.zero_()
y_.zero_()
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema, state_dict, config)
else:
train = train_fns.dummy_training_function()
sample = functools.partial(utils_Task1_KLWGAN_Simulation_Experiment.sample, G=(G_ema if config['ema'] and config['use_ema'] else G), z_=z_, y_=y_, config=config)
if config['dataset'] == 'C10U' or config['dataset'] == 'C10':
data_moments = 'fid_stats_cifar10_train.npz'
#'../Task1_CIFAR_MNIST_KLWGAN_Simulation_Experiment/fid_stats_cifar10_train.npz'
#data_moments = '../Task1_CIFAR_MNIST_KLWGAN_Simulation_Experiment/fid_stats_cifar10_train.npz'
else:
print("Cannot find the dataset.")
sys.exit()
for epoch in range(state_dict['epoch'], config['num_epochs']):
if config['pbar'] == 'mine':
pbar = utils_Task1_KLWGAN_Simulation_Experiment.progress(loaders[0], displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
state_dict['itr'] += 1
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
#metrics = train(x, y)
print('')
# Random seed
#print(config['seed'])
if epoch==0 and i==0:
print(config['seed'])
metrics = train(x, y)
# We double the learning rate if we double the batch size.
train_log.log(itr=int(state_dict['itr']), **metrics)
if (config['sv_log_interval'] > 0) and (not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']), **{**utils_Task1_KLWGAN_Simulation_Experiment.get_SVs(G, 'G'), **utils_Task1_KLWGAN_Simulation_Experiment.get_SVs(D, 'D')})
if config['pbar'] == 'mine':
print(', '.join(['itr: %d' % state_dict['itr']] + ['%s : %+4.3f' % (key, metrics[key]) for key in metrics]), end=' ')
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y, state_dict, config, experiment_name)
experiment_name = (config['experiment_name'] if config['experiment_name'] else utils_Task1_KLWGAN_Simulation_Experiment.name_from_config(config))
if (not (state_dict['itr'] % config['test_every'])) and (epoch >= config['start_eval']):
if config['G_eval_mode']:
G.eval()
if config['ema']:
G_ema.eval()
utils_Task1_KLWGAN_Simulation_Experiment.sample_inception(G_ema if config['ema'] and config['use_ema'] else G, config, str(epoch))
folder_number = str(epoch)
sample_moments = '%s/%s/%s/samples.npz' % (config['samples_root'], experiment_name, folder_number)
#FID = fid_score.calculate_fid_given_paths([data_moments, sample_moments], batch_size=50, cuda=True, dims=2048)
#train_fns.update_FID(G, D, G_ema, state_dict, config, FID, experiment_name, test_log)
# Use the files train_fns.py and utils_Task1_KLWGAN_Simulation_Experiment.py
# Use the functions update_FID() and save_weights()
# Save the lowest FID score
FID = fid_score.calculate_fid_given_paths([data_moments, sample_moments], batch_size=50, cuda=True, dims=2048)
train_fns.update_FID(G, D, G_ema, state_dict, config, FID, experiment_name, test_log)
# FID also from: https://github.com/DarthSid95/RumiGANs/blob/main/gan_metrics.py
# Implicit generative models and GANs generate sharp, low-FID, realistic, and high-quality images.
# We use implicit generative models and GANs for the challenging task of anomaly detection in high-dimensional spaces.
state_dict['epoch'] += 1
# Save the last model
utils_Task1_KLWGAN_Simulation_Experiment.save_weights(G, D, state_dict, config['weights_root'], experiment_name, 'last%d' % 0, G_ema if config['ema'] else None)
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
E = model.ImgEncoder(**config).to(device)
# E = model.Encoder(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GDE = model.G_D_E(G, D, E)
print('Number of params in G: {} D: {} E: {}'.format(*[
sum([p.data.nelement() for p in net.parameters()])
for net in [G, D, E]
]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(
G, D, E, state_dict, config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
if config['parallel']:
GDE = nn.DataParallel(GDE)
if config['cross_replica']:
patch_replication_callback(GDE)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders, train_dataset = utils.get_data_loaders(
**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
# # Prepare inception metrics: FID and IS
# get_inception_metrics = inception_utils.prepare_inception_metrics(
# config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
print("fixed_y original: {} {}".format(fixed_y.shape, fixed_y[:10]))
## TODO: change the sample method to sample x and y
fixed_x, fixed_y_of_x = utils.prepare_x_y(G_batch_size, train_dataset,
experiment_name, config)
# Build image pool to prevent mode collapes
if config['img_pool_size'] != 0:
img_pool = ImagePool(config['img_pool_size'], train_dataset.num_class,\
save_dir=os.path.join(config['imgbuffer_root'], experiment_name),
resume_buffer=config['resume_buffer'])
else:
img_pool = None
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, E, GDE, ema, state_dict,
config, img_pool)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
# print('Beginning training at epoch %f...' % (state_dict['itr'] * D_batch_size / len(train_dataset)))
print("Beginning training at Epoch {} (iteration {})".format(
state_dict['epoch'], state_dict['itr']))
# # Train for specified number of epochs, although we mostly track G iterations.
# for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(
loaders[0],
displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.eval()
D.eval()
if config['ema']:
G_ema.eval()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] >
0) and (not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
if (not state_dict['itr'] % config['save_img_every']) or (
not state_dict['itr'] % config['save_model_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
save_weights = config['save_weights']
if state_dict['itr'] % config['save_model_every']:
save_weights = False
train_fns.save_and_sample(G,
D,
E,
G_ema,
fixed_x,
fixed_y_of_x,
z_,
y_,
state_dict,
config,
experiment_name,
img_pool,
save_weights=save_weights)
# # Test every specified interval
# if not (state_dict['itr'] % config['test_every']):
# if config['G_eval_mode']:
# print('Switchin G to eval mode...')
# G.eval()
# train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
# get_inception_metrics, experiment_name, test_log)
# Increment epoch counter at end of epoch
state_dict['epoch'] = state_dict['itr'] * D_batch_size / (
len(train_dataset))
print("Finished Epoch {} (iteration {})".format(
state_dict['epoch'], state_dict['itr']))
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[
config['dataset']] * config['cluster_per_class']
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
if config['is_encoder']:
config['E_fp16'] = float(config['D_fp16'])
config['num_E_accumulations'] = int(config['num_D_accumulations'])
config['dataset_channel'] = utils.channel_dict[config['dataset']]
config['lambda_encoder'] = config['resolution']**2 * config[
'dataset_channel']
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
if config['is_encoder']:
E = model.Encoder(**{**config, 'D': D}).to(device)
Prior = layers.Prior(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if not config['prior_type'] == 'default':
Prior = Prior.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
if config['is_encoder'] and config['E_fp16']:
print('Casting E to fp16...')
E = E.half()
print(G)
print(D)
if config['is_encoder']:
print(E)
print(Prior)
if not config['is_encoder']:
GD = model.G_D(G, D)
print('Number of params in G: {} D: {}'.format(*[
sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]
]))
else:
GD = model.G_D(G, D, E, Prior)
GE = model.G_E(G, E, Prior)
print('Number of params in G: {} D: {} E: {}'.format(*[
sum([p.data.nelement() for p in net.parameters()])
for net in [G, D, E]
]))
# Prepare state dict, which holds things like epoch # and itr #
# ¡¡¡¡¡¡¡¡¡ Put rec error, discriminator loss and generator loss !!!!!!!!!!!?????????
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'best_error_rec': 99999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(
G,
D,
state_dict,
config['weights_root'],
experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None,
E=None if not config['is_encoder'] else E,
Prior=Prior if not config['prior_type'] == 'default' else None)
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# If parallel, parallelize the GD module
#if config['parallel'] and config['is_encoder']:
# GE = nn.DataParallel(GE)
# if config['cross_replica']:
# patch_replication_callback(GE)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders = utils.get_data_loaders(**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
if config['is_encoder']:
config_aux = config.copy()
config_aux['augment'] = False
dataloader_noaug = utils.get_data_loaders(
**{
**config_aux, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
# Prepare inception metrics: FID and IS
if (config['dataset'] in ['C10']):
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'], config['no_fid'])
else:
get_inception_metrics = None
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(
G, D, GD, Prior, ema, state_dict, config,
losses.Loss_obj(**config), None if not config['is_encoder'] else E)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
Prior=Prior,
config=config)
# Create fixed
fixed_z, fixed_y = Prior.sample_noise_and_y()
fixed_z, fixed_y = fixed_z.clone(), fixed_y.clone()
iter_num = 0
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],
displaytype='s1k' if
config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['is_encoder']:
E.train()
if not config['prior_type'] == 'default':
Prior.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
metrics = train(x, y, iter_num)
train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
if config['is_encoder']:
train_log.log(itr=int(state_dict['itr']),
**{**utils.get_SVs(E, 'E')})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if not config['prior_type'] == 'default':
Prior.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(
G, D, G_ema, Prior, fixed_z, fixed_y, state_dict, config,
experiment_name, None if not config['is_encoder'] else E)
if not (state_dict['itr'] %
config['test_every']) and config['is_encoder']:
if not config['prior_type'] == 'default':
test_acc, test_acc_iter, error_rec = train_fns.test_accuracy(
GE, dataloader_noaug, device, config['D_fp16'], config)
p_mse, p_lik = train_fns.test_p_acc(GE, device, config)
if config['n_classes'] == 10:
utils.reconstruction_sheet(
GE,
classes_per_sheet=utils.classes_per_sheet_dict[
config['dataset']],
num_classes=config['n_classes'],
samples_per_class=20,
parallel=config['parallel'],
samples_root=config['samples_root'],
experiment_name=experiment_name,
folder_number=state_dict['itr'],
dataloader=dataloader_noaug,
device=device,
D_fp16=config['D_fp16'],
config=config)
# Test every specified interval
if not (state_dict['itr'] % config['test_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
if not config['prior_type'] == 'default':
Prior.eval()
G.eval()
train_fns.test(
G, D, G_ema, Prior, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log,
None if not config['is_encoder'] else E,
None if config['prior_type'] == 'default' else
(test_acc, test_acc_iter, error_rec, p_mse, p_lik))
if not (state_dict['itr'] % config['test_every']):
utils.create_curves(train_metrics_fname,
plot_sv=False,
prior_type=config['prior_type'],
is_E=config['is_encoder'])
utils.plot_IS_FID(train_metrics_fname)
# Increment epoch counter at end of epoch
iter_num += 1
state_dict['epoch'] += 1
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
## *** 新增 resolution 使用 I128_hdf5 数据集, 这里也许需要使用 C10数据集
config['resolution'] = utils.imsize_dict[config['dataset']]
## *** 新增 nclass_dict 加载 I128_hdf5 的类别, 这里也许需要使用 C10的类别 10类
config['n_classes'] = utils.nclass_dict[config['dataset']]
## 加载 GD的 激活函数, 都用Relu, 这里的Relu是小写，不知道是否要改大写R
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
## 从头训练吧，么有历史的参数，不用改，默认的就是
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
## 日志加载，也不用改应该
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
## 设置初始随机数种子，都为0，*** 需要修改为paddle的设置
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
## 设置日志根目录，这个应该也不用改
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
## @@@ 这里不需要更改，直接注释掉，Paddle不一定需要这个设置
## 用于加速固定网络结构的参数
# torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
## *** !!! 这个方法很酷哦，直接导入BigGan的model，要看一下BigGAN里面的网络结构配置
model = __import__(config['model'])
## 不用改，把一系列配置作为名字放到了实验名称中
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
## *** 导入参数，需要修改两个方法
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
# If using EMA, prepare it
## *** 默认不开，可以先不改EMA部分
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
## C10比较小，G和D这部分也可以暂时不改，使用默认精度
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
## 把设置完结构G和D打包放入结构模型G_D中
GD = model.G_D(G, D)
## *** 这两个print也许可以删掉，没必要。可能源于继承的nn.Module的一些打印属性
print(G)
print(D)
## *** 这个parameters也是继承torch的属性
print('Number of params in G: {} D: {}'.format(
*
[sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]]))
# Prepare state dict, which holds things like epoch # and itr #
## 初始化统计参数记录表 不用变动
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
## 暂时不用预训练，所以这一块不用更改
if config['resume']:
print('Loading weights...')
utils.load_weights(
G, D, state_dict, config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
## 暂时不用管，GD 默认不并行
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
## 日志中心，应该也可以不用管，如果需要就是把IS和FID的结果看看能不能抽出来
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
## 这个才是重要的，这个是用来做结果统计的。
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
## *** D的数据加载，加载的过程中,get_data_loaders用到了torchvision的transforms方法
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders = utils.get_data_loaders(**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
## 准备评价指标，FID和IS的计算流程，可以使用np版本计算，也不用改
# Prepare inception metrics: FID and IS
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'], config['no_fid'])
## 准备噪声和随机采样的标签组
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
## *** 有一部分torch的numpy用法，需要更改一下，获得噪声和标签
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
## *** 有一部分torch的numpy用法，需要更改一下，获得噪声和标签
## TODO 获得两份噪声和标签，有社么用意吗？
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
## *** 从Distribution中获得采样的方法，可以选择高斯采样和categorical采样
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
## *** 实例化GAN_training_function训练流程
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema,
state_dict, config)
# Else, assume debugging and use the dummy train fn
## 如果没有指定训练模型，那么就用假训走一下流程Debug
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
## *** 把函数utils.sample中部分入参事先占掉，定义为新的函数sample
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
## 这一部分无需翻
## !!! loaders[0] 代表了数据采样对象
pbar = utils.progress(loaders[0],
displaytype='s1k' if
config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
## *** 继承nn.Module中的train, 对应的是
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
## *** 把数据和标签放入训练函数里，train本身有很多需要改写
metrics = train(x, y)
## 记录日志，把metrics信息都输入日志
train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
## 记录资格迹的变化日志
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
## 默认每2000步记录一次结果
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
## *** module中的方法
G.eval()
## 如果采用指数滑动平均
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z,
fixed_y, state_dict, config,
experiment_name)
# Test every specified interval
## 默认每5000步测试一次
if not (state_dict['itr'] % config['test_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name,
test_log)
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
if config['resume']:
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
utils.seed_rng(config['seed'])
utils.prepare_root(config)
torch.backends.cudnn.benchmark = True
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name'] else utils.name_from_config(config))
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
G3 = model.Generator(**config).to(device)
D3 = model.Discriminator(**config).to(device)
if config['ema']:
G_ema = model.Generator(**{**config, 'skip_init': True, 'no_optim': True}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
if config['G_fp16']:
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
D = D.half()
GD = model.G_D(G, D, config['conditional'])
GD3 = model.G_D(G3, D3, config['conditional'])
state_dict = {'itr': 0, 'epoch': 0, 'save_num': 0, 'save_best_num': 0, 'best_IS': 0, 'best_FID': 999999, 'config': config}
if config['resume']:
utils.load_weights(G, D, state_dict, config['weights_root'], experiment_name, config['load_weights'] if config['load_weights'] else None, G_ema if config['ema'] else None)
#utils.load_weights(G, D, state_dict, '../Task3_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'best0', G_ema if config['ema'] else None)
#utils.load_weights(G, D, state_dict, '../Task1_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'best0', G_ema if config['ema'] else None)
#utils.load_weights(G3, D3, state_dict, '../Task2_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'last0', G_ema if config['ema'] else None)
#utils.load_weights(G3, D3, state_dict, '../Task2_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'best0', G_ema if config['ema'] else None)
utils.load_weights(G3, D3, state_dict, '../Task2_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'last0', G_ema if config['ema'] else None)
utils.load_weights(G, D, state_dict, '../Task3_CIFAR_MNIST_KLWGAN_Simulation_Experiment/weights', 'C10Ukl5', 'best0', G_ema if config['ema'] else None)
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'], experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
test_log = utils.MetricsLogger(test_metrics_fname, reinitialize=(not config['resume']))
train_log = utils.MyLogger(train_metrics_fname, reinitialize=(not config['resume']), logstyle=config['logstyle'])
utils.write_metadata(config['logs_root'], experiment_name, config, state_dict)
D_batch_size = (config['batch_size'] * config['num_D_steps'] * config['num_D_accumulations'])
# Use: config['abnormal_class']
#print(config['abnormal_class'])
abnormal_class = config['abnormal_class']
select_dataset = config['select_dataset']
#print(config['select_dataset'])
#print(select_dataset)
loaders = utils.get_data_loaders(**{**config, 'batch_size': D_batch_size, 'start_itr': state_dict['itr'], 'abnormal_class': abnormal_class, 'select_dataset': select_dataset})
# Usage: --select_dataset cifar10 --abnormal_class 0 --shuffle --batch_size 64 --parallel --num_G_accumulations 1 --num_D_accumulations 1 --num_epochs 500 --num_D_steps 4 --G_lr 2e-4 --D_lr 2e-4 --dataset C10 --data_root ../Task2_CIFAR_MNIST_KLWGAN_Simulation_Experiment/data/ --G_ortho 0.0 --G_attn 0 --D_attn 0 --G_init N02 --D_init N02 --ema --use_ema --ema_start 1000 --start_eval 50 --test_every 5000 --save_every 2000 --num_best_copies 5 --num_save_copies 2 --loss_type kl_5 --seed 2 --which_best FID --model BigGAN --experiment_name C10Ukl5
# Use: --select_dataset mnist --abnormal_class 1 --shuffle --batch_size 64 --parallel --num_G_accumulations 1 --num_D_accumulations 1 --num_epochs 500 --num_D_steps 4 --G_lr 2e-4 --D_lr 2e-4 --dataset C10 --data_root ../Task2_CIFAR_MNIST_KLWGAN_Simulation_Experiment/data/ --G_ortho 0.0 --G_attn 0 --D_attn 0 --G_init N02 --D_init N02 --ema --use_ema --ema_start 1000 --start_eval 50 --test_every 5000 --save_every 2000 --num_best_copies 5 --num_save_copies 2 --loss_type kl_5 --seed 2 --which_best FID --model BigGAN --experiment_name C10Ukl5
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'], device=device, fp16=config['G_fp16'])
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size, G.dim_z, config['n_classes'], device=device, fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
if not config['conditional']:
fixed_y.zero_()
y_.zero_()
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G3, D3, GD3, G3, D3, GD3, G, D, GD, z_, y_, ema, state_dict, config)
else:
train = train_fns.dummy_training_function()
sample = functools.partial(utils.sample, G=(G_ema if config['ema'] and config['use_ema'] else G), z_=z_, y_=y_, config=config)
if config['dataset'] == 'C10U' or config['dataset'] == 'C10':
data_moments = 'fid_stats_cifar10_train.npz'
#'../Task1_CIFAR_MNIST_KLWGAN_Simulation_Experiment/fid_stats_cifar10_train.npz'
#data_moments = '../Task1_CIFAR_MNIST_KLWGAN_Simulation_Experiment/fid_stats_cifar10_train.npz'
else:
print("Cannot find the data set.")
sys.exit()
for epoch in range(state_dict['epoch'], config['num_epochs']):
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0], displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
state_dict['itr'] += 1
G.eval()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
print('')
# Random seed
#print(config['seed'])
if epoch==0 and i==0:
print(config['seed'])
metrics = train(x, y)
# We double the learning rate if we double the batch size.
train_log.log(itr=int(state_dict['itr']), **metrics)
if (config['sv_log_interval'] > 0) and (not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']), **{**utils.get_SVs(G, 'G'), **utils.get_SVs(D, 'D')})
if config['pbar'] == 'mine':
print(', '.join(['itr: %d' % state_dict['itr']] + ['%s : %+4.3f' % (key, metrics[key]) for key in metrics]), end=' ')
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y, state_dict, config, experiment_name)
experiment_name = (config['experiment_name'] if config['experiment_name'] else utils.name_from_config(config))
if (not (state_dict['itr'] % config['test_every'])) and (epoch >= config['start_eval']):
if config['G_eval_mode']:
G.eval()
if config['ema']:
G_ema.eval()
utils.sample_inception(
G_ema if config['ema'] and config['use_ema'] else G, config, str(epoch))
folder_number = str(epoch)
sample_moments = '%s/%s/%s/samples.npz' % (config['samples_root'], experiment_name, folder_number)
FID = fid_score.calculate_fid_given_paths([data_moments, sample_moments], batch_size=50, cuda=True, dims=2048)
train_fns.update_FID(G, D, G_ema, state_dict, config, FID, experiment_name, test_log)
state_dict['epoch'] += 1
#utils.save_weights(G, D, state_dict, config['weights_root'], experiment_name, 'be01Bes01Best%d' % state_dict['save_best_num'], G_ema if config['ema'] else None)
utils.save_weights(G, D, state_dict, config['weights_root'], experiment_name, 'last%d' % 0, G_ema if config['ema'] else None)
def run(config):
import train_fns
print(config['name'])
if config["dataset"] == "coco_animals":
folders = [
'bird', 'cat', 'dog', 'horse', 'sheep', 'cow', 'elephant',
'monkey', 'zebra', 'giraffe'
]
# Update the config dict as necessary This is for convenience, to add settings derived from the user-specified configuration into the
# config-dict (e.g. inferring the number of classes and size of the images from the dataset, passing in a pytorch object for the
# activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
print("RESOLUTION: ", config['resolution'])
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed, but only if not more than 4 gpus are used
if "4" not in config["gpus"]:
torch.backends.cudnn.benchmark = True
print(":::::::::::/nCUDNN BENCHMARK", torch.backends.cudnn.benchmark,
"::::::::::::::")
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
print("::: weights saved at ",
'/'.join([config['weights_root'], experiment_name]))
# Next, build the model
keys = sorted(config.keys())
for k in keys:
print(k, ": ", config[k])
G = model.Generator(**config).to(device)
D = model.Unet_Discriminator(**config).to(device)
print(G)
for n, p in G.named_parameters():
print(n, p.size())
print(D)
for n, p in D.named_parameters():
print(n, p.size())
# return
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GD = model.G_D(G, D, config)
print(G)
print(D)
print('Number of params in G: {} D: {}'.format(
*
[sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]]))
# Prepare noise and randomly sampled label arrays Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
G_batch_size = int(G_batch_size * config["num_G_accumulations"])
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
if config["epoch_id"] != "":
epoch_id = config["epoch_id"]
try:
print("LOADING EMA")
utils.load_weights(
G, D, state_dict, config['weights_root'], experiment_name,
config, epoch_id,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
except:
print(
"Ema weight wasn't found, copying G weights to G_ema instead")
utils.load_weights(
G, D, state_dict, config['weights_root'], experiment_name,
config, epoch_id,
config['load_weights'] if config['load_weights'] else None,
None)
G_ema.load_state_dict(G.state_dict())
print("loaded weigths")
G.init_shared_layers(config['learn_ratio'])
G_ema.init_shared_layers(config['learn_ratio'])
G.init_shared_optim()
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# Prepare loggers for stats; metrics holds test metrics, lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed to the dataloader, as G doesn't require dataloading. Note
# that at every loader iteration we pass in enough data to complete a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
if config["dataset"] == "FFHQ":
root = config["data_folder"]
root_perm = config["data_folder"]
transform = transforms.Compose([
transforms.Scale(config["resolution"]),
transforms.CenterCrop(config["resolution"]),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize([0.5, 0.5, 0.5], [0.5, 0.5, 0.5]),
])
batch_size = config['batch_size']
print("rooooot:", root)
dataset = ImageFolder(root=root, transform=transform)
data_loader = DataLoader(dataset,
batch_size,
shuffle=True,
drop_last=True)
loaders = [data_loader]
print("Loaded ", config["dataset"])
inception_metrics_dict = {"fid": [], "is_mean": [], "is_std": []}
# Prepare inception metrics: FID and IS
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'],
config['parallel'],
config['no_fid'],
use_torch=False)
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema,
state_dict, config)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
if config["debug"]:
loss_steps = 10
else:
loss_steps = 100
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
warmup_epochs = config["warmup_epochs"]
for epoch in range(state_dict['epoch'], config['num_epochs']):
if config["progress_bar"]:
if config['pbar'] == 'mine':
pbar = utils.progress(
loaders[0],
displaytype='s1k'
if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
else:
pbar = loaders[0]
target_map = None
for i, batch_data in enumerate(pbar):
x = batch_data[0]
y = batch_data[1]
#H = batch_data[2]
# Increment the iteration counter
state_dict['itr'] += 1
if config["debug"] and state_dict['itr'] > config["stop_it"]:
print("code didn't break :)")
#exit(0)
break #better for profiling
# Make sure G and D are in training mode, just in case they got set to eval For D, which typically doesn't have BN, this shouldn't
# matter much.
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device).view(-1)
else:
x, y = x.to(device), y.to(device).view(-1)
x.requires_grad = False
y.requires_grad = False
if config["unet_mixup"]:
# Here we load cutmix masks for every image in the batch
n_mixed = int(x.size(0) / config["num_D_accumulations"])
target_map = torch.cat([
CutMix(config["resolution"]).cuda().view(
1, 1, config["resolution"], config["resolution"])
for _ in range(n_mixed)
],
dim=0)
if config["slow_mixup"] and config["full_batch_mixup"]:
# r_mixup is the chance that we select a mixed batch instead of
# a normal batch. This only happens in the setting full_batch_mixup.
# Otherwise the mixed loss is calculated on top of the normal batch.
r_mixup = 0.5 * min(
1.0, state_dict["epoch"] / warmup_epochs
) # r is at most 50%, after reaching warmup_epochs
elif not config["slow_mixup"] and config["full_batch_mixup"]:
r_mixup = 0.5
else:
r_mixup = 0.0
metrics = train(x,
y,
state_dict["epoch"],
batch_size,
target_map=target_map,
r_mixup=r_mixup)
if (i + 1) % 200 == 0:
# print this just to have some peace of mind that the model is training
print("alive and well at ", state_dict['itr'])
if (i + 1) % 20 == 0:
#try:
train_log.log(itr=int(state_dict['itr']), **metrics)
#except:
# print("ouch")
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G,
D,
G_ema,
z_,
y_,
fixed_z,
fixed_y,
state_dict,
config,
experiment_name,
sample_only=False)
go_ahead_and_sample = (
not (state_dict['itr'] % config['sample_every'])) or (
state_dict['itr'] < 1001 and not (state_dict['itr'] % 100))
if go_ahead_and_sample:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G,
D,
G_ema,
z_,
y_,
fixed_z,
fixed_y,
state_dict,
config,
experiment_name,
sample_only=True)
# with torch.no_grad():
# real_batch = dataset.fixed_batch()
# train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y,
# state_dict, config, experiment_name, sample_only=True, use_real = True, real_batch = real_batch)
# also, visualize mixed images and the decoder predicitions
if config["unet_mixup"]:
with torch.no_grad():
n = int(
min(target_map.size(0),
fixed_z.size(0) / 2))
which_G = G_ema if config['ema'] and config[
'use_ema'] else G
utils.accumulate_standing_stats(
G_ema if config['ema'] and config['use_ema']
else G, z_, y_, config['n_classes'],
config['num_standing_accumulations'])
if config["dataset"] == "coco_animals":
# real_batch, real_y = dataset.fixed_batch(return_labels = True)
fixed_Gz = nn.parallel.data_parallel(
which_G,
(fixed_z[:n], which_G.shared(real_y[:n])))
mixed = target_map[:n] * real_batch[:n] + (
1 - target_map[:n]) * fixed_Gz
train_fns.save_and_sample(
G,
D,
G_ema,
z_[:n],
y_[:n],
fixed_z[:n],
fixed_y[:n],
state_dict,
config,
experiment_name + "_mix",
sample_only=True,
use_real=True,
real_batch=mixed,
mixed=True,
target_map=target_map[:n])
# else:
# real_batch = dataset.fixed_batch()
# fixed_Gz = nn.parallel.data_parallel(which_G, (fixed_z[:n], which_G.shared(fixed_z[:n]))) #####shouldnt that be fixed_y?
# mixed = target_map[:n]*real_batch[:n]+(1-target_map[:n])*fixed_Gz
# train_fns.save_and_sample(G, D, G_ema, z_[:n], y_[:n], fixed_z[:n], fixed_y[:n],
# state_dict, config, experiment_name+"_mix", sample_only=True, use_real = True, real_batch = mixed, mixed=True, target_map = target_map[:n])
# Test every specified interval
if not (state_dict['itr'] % config['test_every']):
#if state_dict['itr'] % 100 == 0:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
is_mean, is_std, fid = train_fns.test(G,
D,
G_ema,
z_,
y_,
state_dict,
config,
sample,
get_inception_metrics,
experiment_name,
test_log,
moments="train")
###
# Here, the bn statistics are updated
###
if config['accumulate_stats']:
print("accumulate stats")
utils.accumulate_standing_stats(
G_ema if config['ema'] and config['use_ema'] else G,
z_, y_, config['n_classes'],
config['num_standing_accumulations'])
inception_metrics_dict["is_mean"].append(
(state_dict['itr'], is_mean))
inception_metrics_dict["is_std"].append(
(state_dict['itr'], is_std))
inception_metrics_dict["fid"].append((state_dict['itr'], fid))
if (i + 1) % loss_steps == 0:
with open(
os.path.join(
config["base_root"], "logs/inception_metrics_" +
config["random_number_string"] + ".p"), "wb") as h:
pickle.dump(inception_metrics_dict, h)
print(
"saved FID and IS at",
os.path.join(
config["base_root"], "logs/inception_metrics_" +
config["random_number_string"] + ".p"))
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
if config['base_root']:
os.makedirs(config['base_root'],exist_ok=True)
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(config['ema_decay']))
G_ema = model.Generator(**{**config, 'skip_init':True,
'no_optim': True}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GD = model.G_D(G, D)
print(G)
print(D)
print('Number of params in G: {} D: {}'.format(
*[sum([p.data.nelement() for p in net.parameters()]) for net in [G,D]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {'itr': 0, 'epoch': 0, 'save_num': 0, 'save_best_num': 0,
'best_IS': 0, 'best_FID': 999999, 'config': config}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(G, D, state_dict,
config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None,
)
if G.lr_sched is not None:G.lr_sched.step(state_dict['epoch'])
if D.lr_sched is not None:D.lr_sched.step(state_dict['epoch'])
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config, state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps']
* config['num_D_accumulations'])
loaders = utils.get_data_loaders(**{**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']})
# Prepare inception metrics: FID and IS
if not config['on_kaggle']:
get_inception_metrics = inception_utils.prepare_inception_metrics(config['base_root'],config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
if config['use_dog_cnt']:
y_dist='categorical_dog_cnt'
else:
y_dist = 'categorical'
dim_z=G.dim_z*2 if config['mix_style'] else G.dim_z
z_, y_ = utils.prepare_z_y(G_batch_size, dim_z, config['n_classes'],
device=device, fp16=config['G_fp16'],z_dist=config['z_dist'],
threshold=config['truncated_threshold'],y_dist=y_dist)
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size, dim_z,
config['n_classes'], device=device,
fp16=config['G_fp16'],z_dist=config['z_dist'],
threshold=config['truncated_threshold'],y_dist=y_dist)
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_,
ema, state_dict, config)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(utils.sample,
G=(G_ema if config['ema'] and config['use_ema']
else G),
z_=z_, y_=y_, config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
#I find by epoch is more convelient,so I suggest change to it.if save_every<100,I will change to py epoch
by_epoch=False if config['save_every']>100 else True
# Train for specified number of epochs, although we mostly track G iterations.
start_time = time.time()
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['on_kaggle']:
pbar = loaders[0]
elif config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
epoch_start_time = time.time()
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['ema']:
G_ema.train()
if type(y) == list or type(y)==tuple:
y=torch.cat([yi.unsqueeze(1) for yi in y],dim=1)
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
metrics = train(x, y)
train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{**utils.get_SVs(G, 'G'), **utils.get_SVs(D, 'D')})
# If using my progbar, print metrics.
if config['on_kaggle']:
if i == len(loaders[0])-1:
metrics_str = ', '.join(['%s : %+4.3f' % (key, metrics[key]) for key in metrics])
epoch_time = (time.time()-epoch_start_time) / 60
total_time = (time.time()-start_time) / 60
print(f"[{epoch+1}/{config['num_epochs']}][{epoch_time:.1f}min/{total_time:.1f}min] {metrics_str}")
elif config['pbar'] == 'mine':
if D.lr_sched is None:
print(', '.join(['epoch:%d' % (epoch+1),'itr: %d' % state_dict['itr']]
+ ['%s : %+4.3f' % (key, metrics[key])
for key in metrics]), end=' ')
else:
print(', '.join(['epoch:%d' % (epoch+1),'lr:%.5f' % D.lr_sched.get_lr()[0] ,'itr: %d' % state_dict['itr']]
+ ['%s : %+4.3f' % (key, metrics[key])
for key in metrics]), end=' ')
if not by_epoch:
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']) and not config['on_kaggle']:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y,
state_dict, config, experiment_name)
# Test every specified interval
if not (state_dict['itr'] % config['test_every']) and not config['on_kaggle']:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log)
if by_epoch:
# Save weights and copies as configured at specified interval
if not ((epoch+1) % config['save_every']) and not config['on_kaggle']:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z, fixed_y,
state_dict, config, experiment_name)
# Test every specified interval
if not ((epoch+1) % config['test_every']) and not config['on_kaggle']:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log)
if G_ema is not None and (epoch+1) % config['test_every'] == 0 and not config['on_kaggle']:
torch.save(G_ema.state_dict(), '%s/%s/G_ema_epoch_%03d.pth' %
(config['weights_root'], config['experiment_name'], epoch+1))
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
if G.lr_sched is not None:
G.lr_sched.step()
if D.lr_sched is not None:
D.lr_sched.step()
if config['on_kaggle']:
train_fns.generate_submission(sample, config, experiment_name)
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
num_devices = torch.cuda.device_count()
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.ImageDiscriminator(**config).to(device)
if config['no_Dv'] == False:
Dv = model.VideoDiscriminator(**config).to(device)
else:
Dv = None
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
if config['no_Dv'] == False:
Dv = Dv.half()
# Consider automatically reducing SN_eps?
GD = model.G_D(
G, D, Dv, config['k'],
config['T_into_B']) #xiaodan: add an argument k and T_into_B
# print('GD.k in train.py line 91',GD.k)
# print(G) # xiaodan: print disabled by xiaodan. Too many stuffs
# print(D)
if config['no_Dv'] == False:
print('Number of params in G: {} D: {} Dv: {}'.format(*[
sum([p.data.nelement() for p in net.parameters()])
for net in [G, D, Dv]
]))
else:
print('Number of params in G: {} D: {}'.format(*[
sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]
]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained BigGAN model, load weights
if config['biggan_init']:
print('Loading weights from pre-trained BigGAN...')
utils.load_biggan_weights(G,
D,
state_dict,
config['biggan_weights_root'],
G_ema if config['ema'] else None,
load_optim=False)
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(
G, D, Dv, state_dict, config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
if config['dataset'] == 'C10':
loaders = utils.get_video_cifar_data_loader(
**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
else:
loaders = utils.get_video_data_loaders(**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
# print(loaders)
# print(loaders[0])
print('D loss weight:', config['D_loss_weight'])
# Prepare inception metrics: FID and IS
if config['skip_testing'] == False:
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(
config['G_batch_size'], config['batch_size']
) # * num_devices #xiaodan: num_devices added by xiaodan
# print('num_devices:',num_devices,'G_batch_size:',G_batch_size)
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# print('z_,y_ shapes after prepare_z_y:',z_.shape,y_.shape)
# print('z_,y_ size:',z_.shape,y_.shape)
# print('G.dim_z:',G.dim_z)
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, Dv, GD, z_, y_, ema,
state_dict, config)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
unique_id = datetime.datetime.now().strftime('%Y%m-%d%H-%M%S-')
tensorboard_path = os.path.join(config['logs_root'], 'tensorboard_logs',
unique_id)
os.makedirs(tensorboard_path)
# Train for specified number of epochs, although we mostly track G iterations.
writer = SummaryWriter(log_dir=tensorboard_path)
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],
displaytype='s1k' if
config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
iteration = epoch * len(pbar)
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['no_Dv'] == False:
Dv.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
metrics = train(x, y, writer, iteration + i)
train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
if config['no_Dv'] == False:
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D'),
**utils.get_SVs(Dv, 'Dv')
})
else:
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, Dv, G_ema, z_, y_, fixed_z,
fixed_y, state_dict, config,
experiment_name)
#xiaodan: Disabled test for now because we don't have inception data
# Test every specified interval
if not (state_dict['itr'] %
config['test_every']) and config['skip_testing'] == False:
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
IS_mean, IS_std, FID = train_fns.test(
G, D, Dv, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log)
writer.add_scalar('Inception/IS', IS_mean, iteration + i)
writer.add_scalar('Inception/IS_std', IS_std, iteration + i)
writer.add_scalar('Inception/FID', FID, iteration + i)
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
def len_parallelloader(self):
return len(self._loader._loader)
pl.PerDeviceLoader.__len__ = len_parallelloader
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
xm.master_print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different
# files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
xm.master_print('Experiment name is %s' % experiment_name)
device = xm.xla_device(devkind='TPU')
# Next, build the model
G = model.Generator(**config)
D = model.Discriminator(**config)
# If using EMA, prepare it
if config['ema']:
xm.master_print(
'Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{**config, 'skip_init': True,
'no_optim': True})
else:
xm.master_print('Not using ema...')
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
xm.master_print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
xm.master_print('Casting D to fp16...')
D = D.half()
# Prepare state dict, which holds things like itr #
state_dict = {'itr': 0, 'save_num': 0, 'save_best_num': 0,
'best_IS': 0, 'best_FID': 999999, 'config': config}
# If loading from a pre-trained model, load weights
if config['resume']:
xm.master_print('Loading weights...')
utils.load_weights(
G,
D,
state_dict,
config['weights_root'],
experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# move everything to TPU
G = G.to(device)
D = D.to(device)
G.optim = optim.Adam(params=G.parameters(), lr=G.lr,
betas=(G.B1, G.B2), weight_decay=0,
eps=G.adam_eps)
D.optim = optim.Adam(params=D.parameters(), lr=D.lr,
betas=(D.B1, D.B2), weight_decay=0,
eps=D.adam_eps)
# for key, val in G.optim.state.items():
# G.optim.state[key]['exp_avg'] = G.optim.state[key]['exp_avg'].to(device)
# G.optim.state[key]['exp_avg_sq'] = G.optim.state[key]['exp_avg_sq'].to(device)
# for key, val in D.optim.state.items():
# D.optim.state[key]['exp_avg'] = D.optim.state[key]['exp_avg'].to(device)
# D.optim.state[key]['exp_avg_sq'] = D.optim.state[key]['exp_avg_sq'].to(device)
if config['ema']:
G_ema = G_ema.to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
# Consider automatically reducing SN_eps?
GD = model.G_D(G, D)
xm.master_print(G)
xm.master_print(D)
xm.master_print('Number of params in G: {} D: {}'.format(
*[sum([p.data.nelement() for p in net.parameters()]) for net in [G, D]]))
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
xm.master_print(
'Test Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
xm.master_print(
'Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
if xm.is_master_ordinal():
# Write metadata
utils.write_metadata(
config['logs_root'],
experiment_name,
config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps']
* config['num_D_accumulations'])
xm.master_print('Preparing data...')
loader = utils.get_data_loaders(**{**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']})
# Prepare inception metrics: FID and IS
xm.master_print('Preparing metrics...')
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'],
no_inception=config['no_inception'],
no_fid=config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
def sample(): return utils.prepare_z_y(G_batch_size, G.dim_z,
config['n_classes'], device=device,
fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout
# training
fixed_z, fixed_y = sample()
train = train_fns.GAN_training_function(G, D, GD, sample, ema, state_dict,
config)
xm.master_print('Beginning training...')
if xm.is_master_ordinal():
pbar = tqdm(total=config['total_steps'])
pbar.n = state_dict['itr']
pbar.refresh()
xm.rendezvous('training_starts')
while (state_dict['itr'] < config['total_steps']):
pl_loader = pl.ParallelLoader(
loader, [device]).per_device_loader(device)
for i, (x, y) in enumerate(pl_loader):
if xm.is_master_ordinal():
# Increment the iteration counter
pbar.update(1)
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter
# much.
G.train()
D.train()
if config['ema']:
G_ema.train()
xm.rendezvous('data_collection')
metrics = train(x, y)
# train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
if ((config['sv_log_interval'] > 0) and (not (state_dict['itr'] % config['sv_log_interval']))) :
if xm.is_master_ordinal():
train_log.log(itr=int(state_dict['itr']),
**{**utils.get_SVs(G, 'G'), **utils.get_SVs(D, 'D')})
xm.rendezvous('Log SVs.')
# Save weights and copies as configured at specified interval
if (not (state_dict['itr'] % config['save_every'])):
if config['G_eval_mode']:
xm.master_print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(
G,
D,
G_ema,
sample,
fixed_z,
fixed_y,
state_dict,
config,
experiment_name)
# Test every specified interval
if (not (state_dict['itr'] % config['test_every'])):
which_G = G_ema if config['ema'] and config['use_ema'] else G
if config['G_eval_mode']:
xm.master_print('Switchin G to eval mode...')
which_G.eval()
def G_sample():
z, y = sample()
return which_G(z, which_G.shared(y))
train_fns.test(
G,
D,
G_ema,
sample,
state_dict,
config,
G_sample,
get_inception_metrics,
experiment_name,
test_log)
# Debug : Message print
# if True:
# xm.master_print(met.metrics_report())
if state_dict['itr'] >= config['total_steps']:
break
def run(config):
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
model = BigGAN
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
# If using EMA, prepare it (Earth Moving Averaging for parameters)
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
ema = None
GD = model.G_D(G, D)
print('Number of params in G: {} D: {}'.format(
*
[sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(
G, D, state_dict, config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders = utils.get_data_loaders(**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
# Prepare inception metrics: FID and IS
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema, state_dict,
config)
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
pbar = utils.progress(
loaders[0],
displaytype='s1k' if config['use_multiepoch_sampler'] else 'eta')
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
metrics = train(x, y)
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z,
fixed_y, state_dict, config,
experiment_name)
# Test every specified interval
if not (state_dict['itr'] % config['test_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name,
test_log)
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
logger = logging.getLogger('tl')
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
config['n_classes'] = utils.nclass_dict[config['dataset']]
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = importlib.import_module(config['model'])
# model = __import__(config['model'])
experiment_name = 'exp'
# experiment_name = (config['experiment_name'] if config['experiment_name']
# else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config, cfg=getattr(global_cfg, 'generator',
None)).to(device)
D = model.Discriminator(**config,
cfg=getattr(global_cfg, 'discriminator',
None)).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
},
cfg=getattr(global_cfg, 'generator',
None)).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GD = model.G_D(G, D)
logger.info(G)
logger.info(D)
logger.info('Number of params in G: {} D: {}'.format(
*
[sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num': 0,
'best_IS': 0,
'best_FID': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(G=G,
D=D,
state_dict=state_dict,
weights_root=global_cfg.resume_cfg.weights_root,
experiment_name='',
name_suffix=config['load_weights']
if config['load_weights'] else None,
G_ema=G_ema if config['ema'] else None)
logger.info(f"Resume IS={state_dict['best_IS']}")
logger.info(f"Resume FID={state_dict['best_FID']}")
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.jsonl' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders = utils.get_data_loaders(
**{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr'],
**getattr(global_cfg, 'train_dataloader', {})
})
val_loaders = None
if hasattr(global_cfg, 'val_dataloader'):
val_loaders = utils.get_data_loaders(
**{
**config, 'batch_size': config['batch_size'],
'start_itr': state_dict['itr'],
**global_cfg.val_dataloader
})[0]
val_loaders = iter(val_loaders)
# Prepare inception metrics: FID and IS
if global_cfg.get('use_unofficial_FID', False):
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['inception_file'], config['parallel'], config['no_fid'])
else:
get_inception_metrics = inception_utils.prepare_FID_IS(global_cfg)
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema,
state_dict, config,
val_loaders)
# Else, assume debugging and use the dummy train fn
elif config['which_train_fn'] == 'dummy':
train = train_fns.dummy_training_function()
else:
train_fns_module = importlib.import_module(config['which_train_fn'])
train = train_fns_module.GAN_training_function(G, D, GD, z_, y_, ema,
state_dict, config,
val_loaders)
# Prepare Sample function for use with inception metrics
if global_cfg.get('use_unofficial_FID', False):
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
else:
sample = functools.partial(
utils.sample_imgs,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
state_dict['shown_images'] = state_dict['itr'] * D_batch_size
if global_cfg.get('resume_cfg', {}).get('eval', False):
logger.info(f'Evaluating model.')
G_ema.eval()
G.eval()
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name, test_log)
return
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],
desc=f'Epoch:{epoch}, Itr: ',
displaytype='s1k' if
config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
for i, (x, y) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y = x.to(device).half(), y.to(device)
else:
x, y = x.to(device), y.to(device)
default_dict = train(x, y)
state_dict['shown_images'] += D_batch_size
metrics = default_dict['D_loss']
train_log.log(itr=int(state_dict['itr']), **metrics)
summary_defaultdict2txtfig(default_dict=default_dict,
prefix='train',
step=state_dict['shown_images'],
textlogger=textlogger)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ',
flush=True)
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z,
fixed_y, state_dict, config,
experiment_name)
# Test every specified interval
if state_dict['itr'] == 1 or \
(config['test_every'] > 0 and state_dict['itr'] % config['test_every'] == 0) or \
(state_dict['shown_images'] % global_cfg.get('test_every_images', float('inf'))) < D_batch_size:
if config['G_eval_mode']:
print('Switchin G to eval mode...', flush=True)
G.eval()
print('\n' + config['tl_outdir'])
train_fns.test(G, D, G_ema, z_, y_, state_dict, config, sample,
get_inception_metrics, experiment_name,
test_log)
# Increment epoch counter at end of epoch
state_dict['epoch'] += 1
def run(config):
# Update the config dict as necessary
# This is for convenience, to add settings derived from the user-specified
# configuration into the config-dict (e.g. inferring the number of classes
# and size of the images from the dataset, passing in a pytorch object
# for the activation specified as a string)
config['resolution'] = utils.imsize_dict[config['dataset']]
# config['n_classes'] = utils.nclass_dict[config['dataset']]
# NOTE: setting n_classes to 1 except in conditional case to train as unconditional model
config['n_classes'] = 1
if config['conditional']:
config['n_classes'] = 2
print('n classes: {}'.format(config['n_classes']))
config['G_activation'] = utils.activation_dict[config['G_nl']]
config['D_activation'] = utils.activation_dict[config['D_nl']]
# By default, skip init if resuming training.
if config['resume']:
print('Skipping initialization for training resumption...')
config['skip_init'] = True
config = utils.update_config_roots(config)
device = 'cuda'
# Seed RNG
utils.seed_rng(config['seed'])
# Prepare root folders if necessary
utils.prepare_root(config)
# Setup cudnn.benchmark for free speed
torch.backends.cudnn.benchmark = True
# Import the model--this line allows us to dynamically select different files.
model = __import__(config['model'])
experiment_name = (config['experiment_name'] if config['experiment_name']
else utils.name_from_config(config))
print('Experiment name is %s' % experiment_name)
# Next, build the model
G = model.Generator(**config).to(device)
D = model.Discriminator(**config).to(device)
# If using EMA, prepare it
if config['ema']:
print('Preparing EMA for G with decay of {}'.format(
config['ema_decay']))
G_ema = model.Generator(**{
**config, 'skip_init': True,
'no_optim': True
}).to(device)
ema = utils.ema(G, G_ema, config['ema_decay'], config['ema_start'])
else:
G_ema, ema = None, None
# FP16?
if config['G_fp16']:
print('Casting G to float16...')
G = G.half()
if config['ema']:
G_ema = G_ema.half()
if config['D_fp16']:
print('Casting D to fp16...')
D = D.half()
# Consider automatically reducing SN_eps?
GD = model.G_D(
G, D,
config['conditional']) # check if labels are 0's if "unconditional"
print(G)
print(D)
print('Number of params in G: {} D: {}'.format(
*
[sum([p.data.nelement() for p in net.parameters()])
for net in [G, D]]))
# Prepare state dict, which holds things like epoch # and itr #
state_dict = {
'itr': 0,
'epoch': 0,
'save_num': 0,
'save_best_num_fair': 0,
'save_best_num_fid': 0,
'best_IS': 0,
'best_FID': 999999,
'best_fair_d': 999999,
'config': config
}
# If loading from a pre-trained model, load weights
if config['resume']:
print('Loading weights...')
utils.load_weights(
G, D, state_dict, config['weights_root'], experiment_name,
config['load_weights'] if config['load_weights'] else None,
G_ema if config['ema'] else None)
# If parallel, parallelize the GD module
if config['parallel']:
GD = nn.DataParallel(GD)
if config['cross_replica']:
patch_replication_callback(GD)
# Prepare loggers for stats; metrics holds test metrics,
# lmetrics holds any desired training metrics.
test_metrics_fname = '%s/%s_log.json' % (config['logs_root'],
experiment_name)
train_metrics_fname = '%s/%s' % (config['logs_root'], experiment_name)
print('Inception Metrics will be saved to {}'.format(test_metrics_fname))
test_log = utils.MetricsLogger(test_metrics_fname,
reinitialize=(not config['resume']))
print('Training Metrics will be saved to {}'.format(train_metrics_fname))
train_log = utils.MyLogger(train_metrics_fname,
reinitialize=(not config['resume']),
logstyle=config['logstyle'])
# Write metadata
utils.write_metadata(config['logs_root'], experiment_name, config,
state_dict)
# Prepare data; the Discriminator's batch size is all that needs to be passed
# to the dataloader, as G doesn't require dataloading.
# Note that at every loader iteration we pass in enough data to complete
# a full D iteration (regardless of number of D steps and accumulations)
D_batch_size = (config['batch_size'] * config['num_D_steps'] *
config['num_D_accumulations'])
loaders = utils.get_data_loaders(
config, **{
**config, 'batch_size': D_batch_size,
'start_itr': state_dict['itr']
})
# Prepare inception metrics: FID and IS
get_inception_metrics = inception_utils.prepare_inception_metrics(
config['dataset'], config['parallel'], config['no_fid'])
# Prepare noise and randomly sampled label arrays
# Allow for different batch sizes in G
G_batch_size = max(config['G_batch_size'], config['batch_size'])
z_, y_ = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'],
true_prop=config['true_prop'])
# Prepare a fixed z & y to see individual sample evolution throghout training
fixed_z, fixed_y = utils.prepare_z_y(G_batch_size,
G.dim_z,
config['n_classes'],
device=device,
fp16=config['G_fp16'])
fixed_z.sample_()
fixed_y.sample_()
# NOTE: "unconditional" GAN
if not config['conditional']:
fixed_y.zero_()
y_.zero_()
# Loaders are loaded, prepare the training function
if config['which_train_fn'] == 'GAN':
train = train_fns.GAN_training_function(G, D, GD, z_, y_, ema,
state_dict, config)
# Else, assume debugging and use the dummy train fn
else:
train = train_fns.dummy_training_function()
# Prepare Sample function for use with inception metrics
sample = functools.partial(
utils.sample,
G=(G_ema if config['ema'] and config['use_ema'] else G),
z_=z_,
y_=y_,
config=config)
print('Beginning training at epoch %d...' % state_dict['epoch'])
# Train for specified number of epochs, although we mostly track G iterations.
for epoch in range(state_dict['epoch'], config['num_epochs']):
# Which progressbar to use? TQDM or my own?
if config['pbar'] == 'mine':
pbar = utils.progress(loaders[0],
displaytype='s1k' if
config['use_multiepoch_sampler'] else 'eta')
else:
pbar = tqdm(loaders[0])
# iterate through the dataloaders
for i, (x, y, ratio) in enumerate(pbar):
# Increment the iteration counter
state_dict['itr'] += 1
# Make sure G and D are in training mode, just in case they got set to eval
# For D, which typically doesn't have BN, this shouldn't matter much.
G.train()
D.train()
if config['ema']:
G_ema.train()
if config['D_fp16']:
x, y, ratio = x.to(device).half(), y.to(device), ratio.to(
device)
else:
x, y, ratio = x.to(device), y.to(device), ratio.to(device)
metrics = train(x, y, ratio)
train_log.log(itr=int(state_dict['itr']), **metrics)
# Every sv_log_interval, log singular values
if (config['sv_log_interval'] > 0) and (
not (state_dict['itr'] % config['sv_log_interval'])):
train_log.log(itr=int(state_dict['itr']),
**{
**utils.get_SVs(G, 'G'),
**utils.get_SVs(D, 'D')
})
# If using my progbar, print metrics.
if config['pbar'] == 'mine':
print(', '.join(
['itr: %d' % state_dict['itr']] +
['%s : %+4.3f' % (key, metrics[key]) for key in metrics]),
end=' ')
# Save weights and copies as configured at specified interval
if not (state_dict['itr'] % config['save_every']):
if config['G_eval_mode']:
print('Switchin G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
train_fns.save_and_sample(G, D, G_ema, z_, y_, fixed_z,
fixed_y, state_dict, config,
experiment_name)
# Test every epoch (not specified interval)
if (epoch >= config['start_eval']):
# First, find correct inception moments
data_moments = '../../fid_stats/unbiased_all_gender_fid_stats.npz'
if config['multi']:
data_moments = '../../fid_stats/unbiased_all_multi_fid_stats.npz'
fid_type = 'multi'
else:
fid_type = 'gender'
# load appropriate moments
print('Loaded data moments at: {}'.format(data_moments))
experiment_name = (config['experiment_name']
if config['experiment_name'] else
utils.name_from_config(config))
# eval mode for FID computation
if config['G_eval_mode']:
print('Switching G to eval mode...')
G.eval()
if config['ema']:
G_ema.eval()
utils.sample_inception(
G_ema if config['ema'] and config['use_ema'] else G, config,
str(epoch))
# Get saved sample path
folder_number = str(epoch)
sample_moments = '%s/%s/%s/samples.npz' % (
config['samples_root'], experiment_name, folder_number)
# Calculate FID
FID = fid_score.calculate_fid_given_paths(
[data_moments, sample_moments],
batch_size=100,
cuda=True,
dims=2048)
print("FID calculated")
train_fns.update_FID(G, D, G_ema, state_dict, config, FID,
experiment_name, test_log,
epoch) # added epoch logging
# Increment epoch counter at end of epoch
print('Completed epoch {}'.format(epoch))
state_dict['epoch'] += 1