def main(_argv):
# init
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'
os.environ['CUDA_VISIBLE_DEVICES'] = FLAGS.gpu
logger = tf.get_logger()
logger.disabled = True
logger.setLevel(logging.FATAL)
set_memory_growth()
cfg = load_yaml(FLAGS.cfg_path)
# load dataset
test_dataset = load_cifar10_dataset(
cfg['val_batch_size'], split='test', shuffle=False,
drop_remainder=False, using_crop=False, using_flip=False,
using_cutout=False)
# define network
# TODO : change cfg
for num_arch in range(50):
model = CifarModel(cfg, training=False)
model.summary(line_length=80)
print("param size = {:f}MB".format(count_parameters_in_MB(model)))
# load checkpoint
checkpoint_path = './checkpoints/' + cfg['sub_name'] + '/best.ckpt'
try:
model.load_weights('./checkpoints/' + cfg['sub_name'] + '/best.ckpt')
print("[*] load ckpt from {}.".format(checkpoint_path))
except:
print("[*] Cannot find ckpt from {}.".format(checkpoint_path))
exit()
# inference
top1 = AvgrageMeter()
top5 = AvgrageMeter()
for step, (inputs, labels) in enumerate(test_dataset):
# run model
logits = model(inputs)
# cacludate top1, top5 acc
prec1, prec5 = accuracy(logits.numpy(), labels.numpy(), topk=(1, 5))
n = inputs.shape[0]
top1.update(prec1, n)
top5.update(prec5, n)
print(" {:03d}: top1 {:f}, top5 {:f}".format(step, top1.avg, top5.avg))
print("Test Acc: top1 {:.2f}%, top5 {:.2f}%".format(top1.avg, top5.avg))
def main(_):
# init
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'
os.environ['CUDA_VISIBLE_DEVICES'] = FLAGS.gpu
logger = tf.get_logger()
logger.disabled = True
logger.setLevel(logging.FATAL)
set_memory_growth()
cfg = load_yaml(FLAGS.cfg_path)
# define training step function
@tf.function
def train_step(inputs, labels, drop_path_prob):
with tf.GradientTape() as tape:
logits, logits_aux = model((inputs, drop_path_prob), training=True)
losses = {}
losses['reg'] = tf.reduce_sum(model.losses)
losses['ce'] = criterion(labels, logits)
losses['ce_auxiliary'] = \
cfg['auxiliary_weight'] * criterion(labels, logits_aux)
total_loss = tf.add_n([l for l in losses.values()])
grads = tape.gradient(total_loss, model.trainable_variables)
grads = [(tf.clip_by_norm(grad, cfg['grad_clip'])) for grad in grads]
optimizer.apply_gradients(zip(grads, model.trainable_variables))
return logits, total_loss, losses
# Used to store the final accuracy for every arch
final_acc = pd.DataFrame(data=None, columns=['arch_name', 'acc'])
loop_num = 50
if Debug:
# debugpy.wait_for_client()
loop_num = 1
# define network
for arch_num in range(loop_num):
# read the arch
arch = str(f"{cfg['sub_name']}_{arch_num}")
cfg['arch'] = arch
model = CifarModel(cfg, training=True, file_name=FLAGS.file_name)
if Debug:
model.summary(line_length=80)
print("param size = {:f}MB".format(count_parameters_in_MB(model)))
# load dataset
train_dataset = load_cifar10_dataset(
cfg['batch_size'],
split='train',
shuffle=True,
drop_remainder=True,
using_normalize=cfg['using_normalize'],
using_crop=cfg['using_crop'],
using_flip=cfg['using_flip'],
using_cutout=cfg['using_cutout'],
cutout_length=cfg['cutout_length'])
val_dataset = load_cifar10_dataset(
cfg['val_batch_size'],
split='test',
shuffle=False,
drop_remainder=False,
using_normalize=cfg['using_normalize'],
using_crop=False,
using_flip=False,
using_cutout=False)
# define optimizer
steps_per_epoch = cfg['dataset_len'] // cfg['batch_size']
learning_rate = CosineAnnealingLR(initial_learning_rate=cfg['init_lr'],
t_period=cfg['epoch'] *
steps_per_epoch,
lr_min=cfg['lr_min'])
optimizer = tf.keras.optimizers.SGD(learning_rate=learning_rate,
momentum=cfg['momentum'])
# define losses function
criterion = CrossEntropyLoss()
# load checkpoint
checkpoint_dir = './checkpoints/' + arch
checkpoint = tf.train.Checkpoint(step=tf.Variable(0, name='step'),
optimizer=optimizer,
model=model)
manager = tf.train.CheckpointManager(checkpoint=checkpoint,
directory=checkpoint_dir,
max_to_keep=3)
if manager.latest_checkpoint:
checkpoint.restore(manager.latest_checkpoint)
print('[*] load ckpt from {} at step {}.'.format(
manager.latest_checkpoint, checkpoint.step.numpy()))
else:
print("[*] training from scratch.")
# training loop
summary_writer = tf.summary.create_file_writer('./logs/' +
cfg['sub_name'])
total_steps = steps_per_epoch * cfg['epoch']
remain_steps = max(total_steps - checkpoint.step.numpy(), 0)
prog_bar = ProgressBar(steps_per_epoch,
checkpoint.step.numpy() % steps_per_epoch)
train_acc = AvgrageMeter()
val_acc = AvgrageMeter()
best_acc = 0.
for inputs, labels in train_dataset.take(remain_steps):
checkpoint.step.assign_add(1)
drop_path_prob = cfg['drop_path_prob'] * (
tf.cast(checkpoint.step, tf.float32) / total_steps)
steps = checkpoint.step.numpy()
epochs = ((steps - 1) // steps_per_epoch) + 1
logits, total_loss, losses = train_step(inputs, labels,
drop_path_prob)
train_acc.update(
accuracy(logits.numpy(), labels.numpy())[0], cfg['batch_size'])
prog_bar.update(
"epoch={}/{}, loss={:.4f}, acc={:.2f}, lr={:.2e}".format(
epochs, cfg['epoch'], total_loss.numpy(), train_acc.avg,
optimizer.lr(steps).numpy()))
if steps % cfg['val_steps'] == 0 and steps > 1:
print("\n[*] validate...", end='')
val_acc.reset()
for inputs_val, labels_val in val_dataset:
logits_val, _ = model((inputs_val, tf.constant([0.])))
val_acc.update(
accuracy(logits_val.numpy(), labels_val.numpy())[0],
inputs_val.shape[0])
if val_acc.avg > best_acc:
best_acc = val_acc.avg
model.save_weights(
f"checkpoints/{cfg['sub_name']}/best.ckpt")
val_str = " val acc {:.2f}%, best acc {:.2f}%"
print(val_str.format(val_acc.avg, best_acc), end='')
if steps % 10 == 0:
with summary_writer.as_default():
tf.summary.scalar('acc/train', train_acc.avg, step=steps)
tf.summary.scalar('acc/val', val_acc.avg, step=steps)
tf.summary.scalar('loss/total_loss',
total_loss,
step=steps)
for k, l in losses.items():
tf.summary.scalar('loss/{}'.format(k), l, step=steps)
tf.summary.scalar('learning_rate',
optimizer.lr(steps),
step=steps)
if steps % cfg['save_steps'] == 0:
manager.save()
print("\n[*] save ckpt file at {}".format(
manager.latest_checkpoint))
if steps % steps_per_epoch == 0:
train_acc.reset()
manager.save()
print("\n[*] training one arch done! save ckpt file at {}".format(
manager.latest_checkpoint))
final_acc.loc[arch_num] = list([arch, best_acc])
print("Whole training ended, the best result is :")
print("\t", final_acc.iloc[final_acc['acc'].idxmax()])
optimizer_centers_reg.step()
else:
optimizer_centers_reg.zero_grad()
optimizer_model.zero_grad()
model_loss.backward(retain_graph=True)
optimizer_model.step()
optimizer_centers_reg.zero_grad()
optimizer_model.zero_grad()
center_reg_loss.backward()
optimizer_centers_reg.step()
# measure accuracy and record loss
if(not args.onevsrest):
"""there is problem with one-vs-rest situation, it'll be solved in following commits"""
train_prec1 = accuracy(outputs.data, labels)[0].item()
train_top1.update(train_prec1, inputs.size(0))
if(args.vis2d):
all_features.append(features.data.cpu().numpy())
all_labels.append(labels.data.cpu().numpy())
# measure elapsed time
batch_time.update(time.time() - end)
end = time.time()
if batch_id % args.print_freq == 0:
print('Epoch: [{0}][{1}/{2}]\t'
'Time {batch_time.val:.3f} '
'Model-Loss {model_loss.val:.4f} ({model_loss.avg:.4f}) '
'Center-Reg {center_reg.val:.4f} ({center_reg.avg:.4f}) '
def main(_):
# init
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'
os.environ['CUDA_VISIBLE_DEVICES'] = FLAGS.gpu
logger = tf.get_logger()
logger.disabled = True
logger.setLevel(logging.FATAL)
set_memory_growth()
cfg = load_yaml(FLAGS.cfg_path)
# define network
sna = SearchNetArch(cfg)
sna.model.summary(line_length=80)
print("param size = {:f}MB".format(count_parameters_in_MB(sna.model)))
# load dataset
t_split = f"train[0%:{int(cfg['train_portion'] * 100)}%]"
v_split = f"train[{int(cfg['train_portion'] * 100)}%:100%]"
train_dataset = load_cifar10_dataset(
cfg['batch_size'],
split=t_split,
shuffle=True,
drop_remainder=True,
using_normalize=cfg['using_normalize'],
using_crop=cfg['using_crop'],
using_flip=cfg['using_flip'],
using_cutout=cfg['using_cutout'],
cutout_length=cfg['cutout_length'])
val_dataset = load_cifar10_dataset(cfg['batch_size'],
split=v_split,
shuffle=True,
drop_remainder=True,
using_normalize=cfg['using_normalize'],
using_crop=cfg['using_crop'],
using_flip=cfg['using_flip'],
using_cutout=cfg['using_cutout'],
cutout_length=cfg['cutout_length'])
# define optimizer
steps_per_epoch = int(cfg['dataset_len'] * cfg['train_portion'] //
cfg['batch_size'])
learning_rate = CosineAnnealingLR(initial_learning_rate=cfg['init_lr'],
t_period=cfg['epoch'] * steps_per_epoch,
lr_min=cfg['lr_min'])
optimizer = tf.keras.optimizers.SGD(learning_rate=learning_rate,
momentum=cfg['momentum'])
optimizer_arch = tf.keras.optimizers.Adam(
learning_rate=cfg['arch_learning_rate'], beta_1=0.5, beta_2=0.999)
# define losses function
criterion = CrossEntropyLoss()
# load checkpoint
checkpoint_dir = './checkpoints/' + cfg['sub_name']
checkpoint = tf.train.Checkpoint(step=tf.Variable(0, name='step'),
optimizer=optimizer,
optimizer_arch=optimizer_arch,
model=sna.model,
alphas_normal=sna.alphas_normal,
alphas_reduce=sna.alphas_reduce,
betas_normal=sna.betas_normal,
betas_reduce=sna.betas_reduce)
manager = tf.train.CheckpointManager(checkpoint=checkpoint,
directory=checkpoint_dir,
max_to_keep=3)
if manager.latest_checkpoint:
checkpoint.restore(manager.latest_checkpoint)
print('[*] load ckpt from {} at step {}.'.format(
manager.latest_checkpoint, checkpoint.step.numpy()))
else:
print("[*] training from scratch.")
print(f"[*] searching model after {cfg['start_search_epoch']} epochs.")
# define training step function for model
@tf.function
def train_step(inputs, labels):
with tf.GradientTape() as tape:
logits = sna.model((inputs, *sna.arch_parameters), training=True)
losses = {}
losses['reg'] = tf.reduce_sum(sna.model.losses)
losses['ce'] = criterion(labels, logits)
total_loss = tf.add_n([l for l in losses.values()])
grads = tape.gradient(total_loss, sna.model.trainable_variables)
grads = [(tf.clip_by_norm(grad, cfg['grad_clip'])) for grad in grads]
optimizer.apply_gradients(zip(grads, sna.model.trainable_variables))
return logits, total_loss, losses
# define training step function for arch_parameters
@tf.function
def train_step_arch(inputs, labels):
with tf.GradientTape() as tape:
logits = sna.model((inputs, *sna.arch_parameters), training=True)
losses = {}
losses['reg'] = cfg['arch_weight_decay'] * tf.add_n(
[tf.reduce_sum(p**2) for p in sna.arch_parameters])
losses['ce'] = criterion(labels, logits)
total_loss = tf.add_n([l for l in losses.values()])
grads = tape.gradient(total_loss, sna.arch_parameters)
optimizer_arch.apply_gradients(zip(grads, sna.arch_parameters))
return losses
# training loop
summary_writer = tf.summary.create_file_writer('./logs/' + cfg['sub_name'])
total_steps = steps_per_epoch * cfg['epoch']
remain_steps = max(total_steps - checkpoint.step.numpy(), 0)
prog_bar = ProgressBar(steps_per_epoch,
checkpoint.step.numpy() % steps_per_epoch)
train_acc = AvgrageMeter()
for inputs, labels in train_dataset.take(remain_steps):
checkpoint.step.assign_add(1)
steps = checkpoint.step.numpy()
epochs = ((steps - 1) // steps_per_epoch) + 1
if epochs > cfg['start_search_epoch']:
inputs_val, labels_val = next(iter(val_dataset))
arch_losses = train_step_arch(inputs_val, labels_val)
logits, total_loss, losses = train_step(inputs, labels)
train_acc.update(
accuracy(logits.numpy(), labels.numpy())[0], cfg['batch_size'])
prog_bar.update(
"epoch={:d}/{:d}, loss={:.4f}, acc={:.2f}, lr={:.2e}".format(
epochs, cfg['epoch'], total_loss.numpy(), train_acc.avg,
optimizer.lr(steps).numpy()))
if steps % 10 == 0:
with summary_writer.as_default():
tf.summary.scalar('acc/train', train_acc.avg, step=steps)
tf.summary.scalar('loss/total_loss', total_loss, step=steps)
for k, l in losses.items():
tf.summary.scalar('loss/{}'.format(k), l, step=steps)
tf.summary.scalar('learning_rate',
optimizer.lr(steps),
step=steps)
if epochs > cfg['start_search_epoch']:
for k, l in arch_losses.items():
tf.summary.scalar('arch_losses/{}'.format(k),
l,
step=steps)
tf.summary.scalar('arch_learning_rate',
cfg['arch_learning_rate'],
step=steps)
if steps % cfg['save_steps'] == 0:
manager.save()
print("\n[*] save ckpt file at {}".format(
manager.latest_checkpoint))
if steps % steps_per_epoch == 0:
train_acc.reset()
if epochs > cfg['start_search_epoch']:
genotype = sna.get_genotype()
print(f"\nsearch arch: {genotype}")
f = open(
os.path.join('./logs', cfg['sub_name'],
'search_arch_genotype.py'), 'a')
f.write(f"\n{cfg['sub_name']}_{epochs} = {genotype}\n")
f.close()
manager.save()
print("\n[*] training done! save ckpt file at {}".format(
manager.latest_checkpoint))
classes = dataset.classes
test_loader = DataLoader(dataset, batch_size=64, shuffle=True)
model_path = 'models/test/best_model.pth'
model = ConvClassifier()
model.load_state_dict(torch.load(model_path))
device = 'cpu'
model.to(device)
model.eval()
test_accuracy = 0.0
with torch.no_grad():
for image, label in tqdm(test_loader):
image = image.to(device)
preds = model(image)
test_accuracy += accuracy(preds, label)
test_accuracy /= len(test_loader.dataset)
print('test accuracy', 100 * test_accuracy.item())
# image = image.data.numpy()[0, :, :, :]
# print('label', classes[label.data.numpy()[0]])
# print('preds', classes[torch.argmax(preds, axis=1).data.numpy()[0]])
# print(image.shape)
# # image = cv2.cvtColor(image, cv2.COLOR_GRAY2BGR)
# image = (255 * image).astype(np.uint8)
# print(image)
# cv2.imshow('image', image)
# cv2.waitKey(0)
# cv2.destroyAllWindows()