def main(args):
assert os.path.isfile(args.checkpoint), "Checkpoint file not found: {}".format(args.checkpoint)
args.cuda = not args.no_cuda and torch.cuda.is_available()
test_transforms = transforms.Compose([transforms.Resize((128, 128)),
transforms.ToTensor()])
# Initialize CLEVR Loader
clevr_dataset_images = ClevrDatasetImages(args.clevr_dir, 'val', test_transforms)
clevr_feat_extraction_loader = DataLoader(clevr_dataset_images, batch_size=args.batch_size,
shuffle=False, num_workers=8, drop_last=True)
args.features_dirs = './features'
if not os.path.exists(args.features_dirs):
os.makedirs(args.features_dirs)
max_features = os.path.join(args.features_dirs, 'max_features.pickle')
avg_features = os.path.join(args.features_dirs, 'avg_features.pickle')
print('Building word dictionaries from all the words in the dataset...')
dictionaries = utils.build_dictionaries(args.clevr_dir)
print('Word dictionary completed!')
args.qdict_size = len(dictionaries[0])
args.adict_size = len(dictionaries[1])
model = RN(args)
if torch.cuda.device_count() > 1 and args.cuda:
model = torch.nn.DataParallel(model)
model.module.cuda() # call cuda() overridden method
if args.cuda:
model.cuda()
# Load the model checkpoint
print('==> loading checkpoint {}'.format(args.checkpoint))
checkpoint = torch.load(args.checkpoint)
#removes 'module' from dict entries, pytorch bug #3805
checkpoint = {k.replace('module.',''): v for k,v in checkpoint.items()}
model.load_state_dict(checkpoint)
print('==> loaded checkpoint {}'.format(args.checkpoint))
max_features = open(max_features, 'wb')
avg_features = open(avg_features, 'wb')
extract_features_rl(clevr_feat_extraction_loader, max_features, avg_features, model, args)
def main(args):
args.model_dirs = './model_{}_b{}_lr{}'.format(args.model, args.batch_size,
args.lr)
args.features_dirs = './features'
if not os.path.exists(args.model_dirs):
os.makedirs(args.model_dirs)
args.test_results_dir = './test_results'
if not os.path.exists(args.test_results_dir):
os.makedirs(args.test_results_dir)
args.cuda = not args.no_cuda and torch.cuda.is_available()
torch.manual_seed(args.seed)
if args.cuda:
torch.cuda.manual_seed(args.seed)
print('Building word dictionaries from all the words in the dataset...')
dictionaries = utils.build_dictionaries(args.clevr_dir)
print('Word dictionary completed!')
print('Initializing CLEVR dataset...')
if (not args.state_description):
train_transforms = transforms.Compose([
transforms.Resize((128, 128)),
transforms.Pad(8),
transforms.RandomCrop((128, 128)),
transforms.RandomRotation(2.8), # .05 rad
transforms.ToTensor()
])
test_transforms = transforms.Compose(
[transforms.Resize((128, 128)),
transforms.ToTensor()])
clevr_dataset_train = ClevrDataset(args.clevr_dir, True, dictionaries,
train_transforms)
clevr_dataset_test = ClevrDataset(args.clevr_dir, False, dictionaries,
test_transforms)
# Use a weighted sampler for training:
weights = clevr_dataset_train.answer_weights()
sampler = torch.utils.data.sampler.WeightedRandomSampler(
weights, len(weights))
# Initialize Clevr dataset loaders
clevr_train_loader = DataLoader(clevr_dataset_train,
batch_size=args.batch_size,
sampler=sampler,
num_workers=8,
collate_fn=utils.collate_samples_image)
clevr_test_loader = DataLoader(clevr_dataset_test,
batch_size=args.batch_size,
shuffle=False,
num_workers=8,
collate_fn=utils.collate_samples_image)
else:
clevr_dataset_train = ClevrDatasetStateDescription(
args.clevr_dir, True, dictionaries)
clevr_dataset_test = ClevrDatasetStateDescription(
args.clevr_dir, False, dictionaries)
# Initialize Clevr dataset loaders
clevr_train_loader = DataLoader(
clevr_dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=8,
collate_fn=utils.collate_samples_state_description)
clevr_test_loader = DataLoader(
clevr_dataset_test,
batch_size=args.batch_size,
shuffle=False,
num_workers=8,
collate_fn=utils.collate_samples_state_description)
print('CLEVR dataset initialized!')
# Build the model
args.qdict_size = len(dictionaries[0])
args.adict_size = len(dictionaries[1])
model = RN(args)
if torch.cuda.device_count() > 1 and args.cuda:
model = torch.nn.DataParallel(model)
model.module.cuda() # call cuda() overridden method
if args.cuda:
model.cuda()
start_epoch = 1
if args.resume:
filename = args.resume
if os.path.isfile(filename):
print('==> loading checkpoint {}'.format(filename))
checkpoint = torch.load(filename)
#removes 'module' from dict entries, pytorch bug #3805
#checkpoint = {k.replace('module.',''): v for k,v in checkpoint.items()}
model.load_state_dict(checkpoint)
print('==> loaded checkpoint {}'.format(filename))
start_epoch = int(
re.match(r'.*epoch_(\d+).pth', args.resume).groups()[0]) + 1
if args.conv_transfer_learn:
if os.path.isfile(args.conv_transfer_learn):
# TODO: there may be problems caused by pytorch issue #3805 if using DataParallel
print('==> loading conv layer from {}'.format(
args.conv_transfer_learn))
# pretrained dict is the dictionary containing the already trained conv layer
pretrained_dict = torch.load(args.conv_transfer_learn)
if torch.cuda.device_count() == 1:
conv_dict = model.conv.state_dict()
else:
conv_dict = model.module.conv.state_dict()
# filter only the conv layer from the loaded dictionary
conv_pretrained_dict = {
k.replace('conv.', '', 1): v
for k, v in pretrained_dict.items() if 'conv.' in k
}
# overwrite entries in the existing state dict
conv_dict.update(conv_pretrained_dict)
# load the new state dict
if torch.cuda.device_count() == 1:
model.conv.load_state_dict(conv_dict)
params = model.conv.parameters()
else:
model.module.conv.load_state_dict(conv_dict)
params = model.module.conv.parameters()
# freeze the weights for the convolutional layer by disabling gradient evaluation
# for param in params:
# param.requires_grad = False
print("==> conv layer loaded!")
else:
print('Cannot load file {}'.format(args.conv_transfer_learn))
progress_bar = trange(start_epoch, args.epochs + 1)
if args.test:
# perform a single test
print('Testing epoch {}'.format(start_epoch))
test(clevr_test_loader, model, start_epoch, dictionaries, args)
else:
# perform a full training
optimizer = optim.Adam(filter(lambda p: p.requires_grad,
model.parameters()),
lr=args.lr,
weight_decay=1e-4)
print('Training ({} epochs) is starting...'.format(args.epochs))
for epoch in progress_bar:
# TRAIN
progress_bar.set_description('TRAIN')
train(clevr_train_loader, model, optimizer, epoch, args)
# TEST
progress_bar.set_description('TEST')
test(clevr_test_loader, model, epoch, dictionaries, args)
# SAVE MODEL
filename = 'RN_epoch_{:02d}.pth'.format(epoch)
torch.save(model.state_dict(),
os.path.join(args.model_dirs, filename))
def main(args):
#load hyperparameters from configuration file
with open(args.config) as config_file:
hyp = json.load(config_file)['hyperparams'][args.model]
#override configuration dropout
if args.question_injection >= 0:
hyp['question_injection_position'] = args.question_injection
print('Loaded hyperparameters from configuration {}, model: {}: {}'.format(
args.config, args.model, hyp))
assert os.path.isfile(
args.checkpoint), "Checkpoint file not found: {}".format(
args.checkpoint)
args.cuda = not args.no_cuda and torch.cuda.is_available()
# Initialize CLEVR Loader
clevr_dataset_test = initialize_dataset(
args.clevr_dir, True if args.set == 'train' else False,
hyp['state_description'])
clevr_feat_extraction_loader = reload_loaders(clevr_dataset_test,
args.batch_size,
hyp['state_description'])
args.features_dirs = './features'
if not os.path.exists(args.features_dirs):
os.makedirs(args.features_dirs)
files_dict = {}
if args.extr_layer_idx >= 0: #g_layers features
files_dict['max_features'] = \
open(os.path.join(args.features_dirs, '{}_2S-RN_max_features.pickle'.format(args.set,args.extr_layer_idx)),'wb')
files_dict['avg_features'] = \
open(os.path.join(args.features_dirs, '{}_2S-RN_avg_features.pickle'.format(args.set,args.extr_layer_idx)),'wb')
else:
'''files_dict['flatconv_features'] = \
open(os.path.join(args.features_dirs, '{}_flatconv_features.pickle'.format(args.set)),'wb')'''
files_dict['avgconv_features'] = \
open(os.path.join(args.features_dirs, '{}_RN_avg_features.pickle'.format(args.set)),'wb')
files_dict['maxconv_features'] = \
open(os.path.join(args.features_dirs, '{}_RN_max_features.pickle'.format(args.set)),'wb')
print('Building word dictionaries from all the words in the dataset...')
dictionaries = utils.build_dictionaries(args.clevr_dir)
print('Word dictionary completed!')
args.qdict_size = len(dictionaries[0])
args.adict_size = len(dictionaries[1])
print('Cuda: {}'.format(args.cuda))
model = RN(args, hyp, extraction=True)
if torch.cuda.device_count() > 1 and args.cuda:
model = torch.nn.DataParallel(model)
model.module.cuda() # call cuda() overridden method
if args.cuda:
model.cuda()
# Load the model checkpoint
print('==> loading checkpoint {}'.format(args.checkpoint))
checkpoint = torch.load(args.checkpoint,
map_location=lambda storage, loc: storage)
#removes 'module' from dict entries, pytorch bug #3805
#removes 'module' from dict entries, pytorch bug #3805
if torch.cuda.device_count() == 1 and any(
k.startswith('module.') for k in checkpoint.keys()):
print('Removing \'module.\' prefix')
checkpoint = {
k.replace('module.', ''): v
for k, v in checkpoint.items()
}
if torch.cuda.device_count() > 1 and not any(
k.startswith('module.') for k in checkpoint.keys()):
print('Adding \'module.\' prefix')
checkpoint = {'module.' + k: v for k, v in checkpoint.items()}
model.load_state_dict(checkpoint)
print('==> loaded checkpoint {}'.format(args.checkpoint))
extract_features_rl(clevr_feat_extraction_loader,
hyp['question_injection_position'],
args.extr_layer_idx, hyp['lstm_hidden'], files_dict,
model, args)
best_acc = 0
# LOSS
# -----------------------------
if loss_type== 'bce':
criterion = nn.BCELoss()
else:
criterion = nn.MSELoss()
optimizer = torch.optim.Adam(model.parameters(), lr=learning_rate)
print("model and criterion loaded ...")
checkpoint = torch.load('./saved_models/model_arr_20190223_21_0.0001_64_mse.ckpt')
model.load_state_dict(checkpoint['state_dict'])
optimizer.load_state_dict(checkpoint['optimizer'])
epoch = checkpoint['epoch']
model.eval()
with torch.no_grad():
count = 0
total = 0
prec_count = 0
blankz_count = 0
for i in range(num_val_iters-1):
# x, y = read_csv_batch('../../data/final_plans/final_val.csv', i, val_batch_size)
x,y = read_batch(rows_val, i, val_batch_size)
x = torch.tensor(x)
x = nn.functional.interpolate(x, (75, 75))
class Task():
def __init__(self, args):
print '#' * 60
print ' ' * 20 + ' Task Created ' + ' ' * 20
print '#' * 60
######################################################################################################
# Parameters
self.batchSize = args.batchSize
self.lr = args.lr
self.weightDecay = 1e-4
self.objNumMax = 30
self.wordEmbeddingDim = 128
self.instructionLength = 10
self.pinMemory = True
self.dropout = False
self.epoch = args.epoch
self.epoch_i = 0
self.batchPrint = 100
self.batchModelSave = args.batchModelSave
self.checkPoint = args.checkPoint
# Path
self.vocabularyPath = './data/vocabulary.json'
self.trainDatasetPath = './data/generated_data_train.json'
self.testDatasetPath = './data/generated_data_test.json'
self.logPath = args.logPath
# Dataset
self.trainDataset = DatasetGenerator(
datasetPath=self.trainDatasetPath,
vocabularyPath=self.vocabularyPath)
self.testDataset = DatasetGenerator(datasetPath=self.testDatasetPath,
vocabularyPath=self.vocabularyPath)
# Tokenizer
self.tokenizer = Tokenizer(vocabPath=self.vocabularyPath)
self.num_embedding = self.tokenizer.get_num_embedding()
# DataLoader
self.trainDataLoader = DataLoader(dataset=self.trainDataset,
shuffle=True,
batch_size=self.batchSize,
num_workers=12,
pin_memory=self.pinMemory)
self.testDataLoader = DataLoader(dataset=self.testDataset,
shuffle=False,
batch_size=self.batchSize,
num_workers=12,
pin_memory=self.pinMemory)
# calculate batch numbers
self.trainBatchNum = int(
np.ceil(len(self.trainDataset) / float(self.batchSize)))
self.testBatchNum = int(
np.ceil(len(self.testDataset) / float(self.batchSize)))
# Create model
self.RN = RN(num_embedding=self.num_embedding,
embedding_dim=self.wordEmbeddingDim,
obj_num_max=self.objNumMax)
# Run task on all available GPUs
if torch.cuda.is_available():
if torch.cuda.device_count() > 1:
print("Use ", torch.cuda.device_count(), " GPUs")
self.RN = nn.DataParallel(self.RN)
self.RN = self.RN.cuda()
print 'Model Created on GPUs.'
# Optermizer
self.optimizer = optim.Adam(self.RN.parameters(),
lr=self.lr,
betas=(0.9, 0.999),
eps=1e-08,
weight_decay=self.weightDecay)
# Scheduler
self.scheduler = ReduceLROnPlateau(self.optimizer,
factor=0.1,
patience=10,
mode='min')
# Loss Function
self.loss = torch.nn.CrossEntropyLoss()
# Load model if a checkPoint is given
if self.checkPoint != "":
self.load(self.checkPoint)
# TensorboardX record
self.writer = SummaryWriter()
self.stepCnt_train = 1
self.stepCnt_test = 1
def train(self):
print 'Training task begin.'
print '----Batch Size: %d' % self.batchSize
print '----Learning Rate: %f' % (self.lr)
print '----Epoch: %d' % self.epoch
print '----Log Path: %s' % self.logPath
for self.epoch_i in range(self.epoch):
self.epochTrain()
self.test()
def epochTrain(self):
s = '#' * 30 + ' Epoch %3d / %3d ' % (self.epoch_i + 1,
self.epoch) + '#' * 30
print s
bar = tqdm(self.trainDataLoader)
for idx, (objs_coordinate, objs_category, objs_category_idx,
instruction, instruction_idx, target,
data) in enumerate(bar):
batchSize = objs_coordinate.shape[0]
# to cuda
if torch.cuda.is_available():
objs_coordinate = objs_coordinate.cuda()
objs_category_idx = objs_category_idx.long().cuda()
instruction_idx = instruction_idx.long().cuda()
target = target.cuda()
# Go through the model
output = self.RN(objs_coordinate, objs_category_idx,
instruction_idx)
# calculate loss
lossValue = self.loss(input=output, target=target)
# Tensorboard record
self.writer.add_scalar('Loss/Train', lossValue.item(),
self.stepCnt_train)
# print loss
bar.set_description('Epoch: %d Loss: %f' %
(self.epoch_i + 1, lossValue.item()))
# Backward
self.optimizer.zero_grad()
lossValue.backward()
self.optimizer.step()
# self.scheduler.step(lossValue)
# Save model
if (idx + 1) % self.batchModelSave == 0:
self.save(batchIdx=(idx + 1))
if idx % self.batchPrint == 0:
output = output.detach().cpu().numpy()
target = target.detach().cpu().numpy()
s = ''
for batch_i in range(batchSize):
s += 'Target: '
s += str(target[batch_i])
s += ' Output: '
s += ', '.join(
[str(i) for i in output[batch_i, :].tolist()])
s += ' ######### '
self.writer.add_text('Target & Output', s, self.stepCnt_train)
self.writer.add_histogram('output', output, self.stepCnt_train)
self.writer.add_histogram('target', target, self.stepCnt_train)
for name, param in self.RN.named_parameters():
self.writer.add_histogram(name,
param.clone().cpu().data.numpy(),
self.stepCnt_train)
self.stepCnt_train += 1
del lossValue
def test(self):
s = '#' * 28 + ' Test Epoch %3d / %3d ' % (self.epoch_i + 1,
self.epoch) + '#' * 28
print s
bar = tqdm(self.testDataLoader)
for idx, (objs_coordinate, objs_category, objs_category_idx,
instruction, instruction_idx, target,
data) in enumerate(bar):
batchSize = objs_coordinate.shape[0]
# to cuda
if torch.cuda.is_available():
objs_coordinate = objs_coordinate.cuda()
objs_category_idx = objs_category_idx.cuda()
instruction_idx = instruction_idx.cuda()
target = target.cuda()
# Go through the model
output = self.RN(objs_coordinate, objs_category_idx,
instruction_idx)
# calculate loss
lossValue = self.loss(input=output, target=target)
# Tensorboard record
self.writer.add_scalar('Loss/Test', lossValue.item(),
self.stepCnt_test)
# print loss
bar.set_description('Epoch: %d Loss: %f' %
(self.epoch_i + 1, lossValue.item()))
# Save model
if (idx + 1) % self.batchModelSave == 0:
self.save(batchIdx=(idx + 1))
if idx % self.batchPrint == 0:
output = output.detach().cpu().numpy()
target = target.detach().cpu().numpy()
s = ''
for batch_i in range(batchSize):
s += 'Target: '
s += str(target[batch_i])
s += ' Output: '
s += ', '.join(
[str(i) for i in output[batch_i, :].tolist()])
s += ' ######### '
self.writer.add_text('Target & Output Test', s,
self.stepCnt_test)
self.writer.add_histogram('output', output, self.stepCnt_test)
self.writer.add_histogram('target', target, self.stepCnt_test)
# for name, param in self.RN.named_parameters():
# self.writer.add_histogram(name, param.clone().cpu().data.numpy(), self.stepCnt_test)
self.stepCnt_test += 1
del lossValue
def save(self, batchIdx=None):
dirPath = os.path.join(self.logPath, 'models')
if not os.path.exists(dirPath):
os.mkdir(dirPath)
if batchIdx is None:
path = os.path.join(dirPath,
'Epoch-%03d-end.pth.tar' % (self.epoch_i + 1))
else:
path = os.path.join(
dirPath,
'Epoch-%03d-Batch-%04d.pth.tar' % (self.epoch_i + 1, batchIdx))
torch.save(
{
'epochs': self.epoch_i + 1,
'batch_size': self.batchSize,
'lr': self.lr,
'weight_dacay': self.weightDecay,
'RN_model_state_dict': self.RN.state_dict()
}, path)
print 'Training log saved to %s' % path
def load(self, path):
modelCheckpoint = torch.load(path)
self.RN.load_state_dict(modelCheckpoint['RN_model_state_dict'])
print 'Load model from %s' % path
for img, relations, norelations in test_datasets:
img = np.swapaxes(img, 0, 2)
for qst, ans in zip(relations[0], relations[1]):
rel_test.append((img, qst, ans))
for qst, ans in zip(norelations[0], norelations[1]):
norel_test.append((img, qst, ans))
return (rel_train, rel_test, norel_train, norel_test)
rel_train, rel_test, norel_train, norel_test = load_data()
try:
os.makedirs(model_dirs)
except:
print('directory {} already exists'.format(model_dirs))
if args.resume:
filename = os.path.join(model_dirs, args.resume)
if os.path.isfile(filename):
print('==> loading checkpoint {}'.format(filename))
checkpoint = torch.load(filename)
model.load_state_dict(checkpoint)
print('==> loaded checkpoint {}'.format(filename))
for epoch in range(1, args.epochs + 1):
train(epoch, rel_train, norel_train)
test(epoch, rel_test, norel_test)
model.save_model(epoch)
def main(args):
#load hyperparameters from configuration file
with open(args.config) as config_file:
hyp = json.load(config_file)['hyperparams'][args.model]
#override configuration dropout
if args.dropout > 0:
hyp['dropout'] = args.dropout
if args.question_injection >= 0:
hyp['question_injection_position'] = args.question_injection
print('Loaded hyperparameters from configuration {}, model: {}: {}'.format(
args.config, args.model, hyp))
args.model_dirs = '{}/model_{}_drop{}_bstart{}_bstep{}_bgamma{}_bmax{}_lrstart{}_'+ \
'lrstep{}_lrgamma{}_lrmax{}_invquests-{}_clipnorm{}_glayers{}_qinj{}_fc1{}_fc2{}'
args.model_dirs = args.model_dirs.format(
args.exp_dir, args.model, hyp['dropout'], args.batch_size,
args.bs_step, args.bs_gamma, args.bs_max, args.lr, args.lr_step,
args.lr_gamma, args.lr_max, args.invert_questions, args.clip_norm,
hyp['g_layers'], hyp['question_injection_position'], hyp['f_fc1'],
hyp['f_fc2'])
if not os.path.exists(args.model_dirs):
os.makedirs(args.model_dirs)
#create a file in this folder containing the overall configuration
args_str = str(args)
hyp_str = str(hyp)
all_configuration = args_str + '\n\n' + hyp_str
filename = os.path.join(args.model_dirs, 'config.txt')
with open(filename, 'w') as config_file:
config_file.write(all_configuration)
args.features_dirs = '{}/features'.format(args.exp_dir)
args.test_results_dir = '{}/test_results'.format(args.exp_dir)
if not os.path.exists(args.test_results_dir):
os.makedirs(args.test_results_dir)
args.cuda = not args.no_cuda and torch.cuda.is_available()
torch.manual_seed(args.seed)
if args.cuda:
torch.cuda.manual_seed(args.seed)
print('Building word dictionaries from all the words in the dataset...')
dictionaries = utils.build_dictionaries(args.clevr_dir, args.exp_dir)
print('Word dictionary completed!')
print('Initializing CLEVR dataset...')
clevr_dataset_train, clevr_dataset_test = initialize_dataset(
args.clevr_dir, args.exp_dir, dictionaries, hyp['state_description'])
print('CLEVR dataset initialized!')
# Build the model
args.qdict_size = len(dictionaries[0])
args.adict_size = len(dictionaries[1])
model = RN(args, hyp)
if torch.cuda.device_count() > 1 and args.cuda:
model = torch.nn.DataParallel(model)
model.module.cuda() # call cuda() overridden method
if args.cuda:
model.cuda()
start_epoch = 1
if args.resume:
filename = args.resume
if os.path.isfile(filename):
print('==> loading checkpoint {}'.format(filename))
checkpoint = torch.load(filename)
#removes 'module' from dict entries, pytorch bug #3805
if torch.cuda.device_count() == 1 and any(
k.startswith('module.') for k in checkpoint.keys()):
checkpoint = {
k.replace('module.', ''): v
for k, v in checkpoint.items()
}
if torch.cuda.device_count() > 1 and not any(
k.startswith('module.') for k in checkpoint.keys()):
checkpoint = {'module.' + k: v for k, v in checkpoint.items()}
model.load_state_dict(checkpoint)
print('==> loaded checkpoint {}'.format(filename))
start_epoch = int(
re.match(r'.*epoch_(\d+).pth', args.resume).groups()[0]) + 1
if args.conv_transfer_learn:
if os.path.isfile(args.conv_transfer_learn):
# TODO: there may be problems caused by pytorch issue #3805 if using DataParallel
print('==> loading conv layer from {}'.format(
args.conv_transfer_learn))
# pretrained dict is the dictionary containing the already trained conv layer
pretrained_dict = torch.load(args.conv_transfer_learn)
if torch.cuda.device_count() == 1:
conv_dict = model.conv.state_dict()
else:
conv_dict = model.module.conv.state_dict()
# filter only the conv layer from the loaded dictionary
conv_pretrained_dict = {
k.replace('conv.', '', 1): v
for k, v in pretrained_dict.items() if 'conv.' in k
}
# overwrite entries in the existing state dict
conv_dict.update(conv_pretrained_dict)
# load the new state dict
if torch.cuda.device_count() == 1:
model.conv.load_state_dict(conv_dict)
params = model.conv.parameters()
else:
model.module.conv.load_state_dict(conv_dict)
params = model.module.conv.parameters()
# freeze the weights for the convolutional layer by disabling gradient evaluation
# for param in params:
# param.requires_grad = False
print("==> conv layer loaded!")
else:
print('Cannot load file {}'.format(args.conv_transfer_learn))
progress_bar = trange(start_epoch, args.epochs + 1)
if args.test:
# perform a single test
print('Testing epoch {}'.format(start_epoch))
_, clevr_test_loader = reload_loaders(clevr_dataset_train,
clevr_dataset_test,
args.batch_size,
args.test_batch_size,
hyp['state_description'])
test(clevr_test_loader, model, start_epoch, dictionaries, args)
else:
bs = args.batch_size
# perform a full training
#TODO: find a better solution for general lr scheduling policies
candidate_lr = args.lr * args.lr_gamma**(start_epoch -
1 // args.lr_step)
lr = candidate_lr if candidate_lr <= args.lr_max else args.lr_max
optimizer = optim.Adam(filter(lambda p: p.requires_grad,
model.parameters()),
lr=lr,
weight_decay=1e-4)
# scheduler = lr_scheduler.ReduceLROnPlateau(optimizer, 'min', factor=0.5, min_lr=1e-6, verbose=True)
scheduler = lr_scheduler.StepLR(optimizer,
args.lr_step,
gamma=args.lr_gamma)
scheduler.last_epoch = start_epoch
print('Training ({} epochs) is starting...'.format(args.epochs))
for epoch in progress_bar:
if ((args.bs_max > 0 and bs < args.bs_max)
or args.bs_max < 0) and (epoch % args.bs_step == 0
or epoch == start_epoch):
bs = math.floor(args.batch_size *
(args.bs_gamma**(epoch // args.bs_step)))
if bs > args.bs_max and args.bs_max > 0:
bs = args.bs_max
clevr_train_loader, clevr_test_loader = reload_loaders(
clevr_dataset_train, clevr_dataset_test, bs,
args.test_batch_size, hyp['state_description'])
#restart optimizer in order to restart learning rate scheduler
#for param_group in optimizer.param_groups:
# param_group['lr'] = args.lr
#scheduler = lr_scheduler.CosineAnnealingLR(optimizer, step, min_lr)
print('Dataset reinitialized with batch size {}'.format(bs))
if ((args.lr_max > 0 and scheduler.get_lr()[0] < args.lr_max)
or args.lr_max < 0):
scheduler.step()
print('Current learning rate: {}'.format(
optimizer.param_groups[0]['lr']))
# TRAIN
progress_bar.set_description('TRAIN')
train(clevr_train_loader, model, optimizer, epoch, args)
# TEST
progress_bar.set_description('TEST')
test(clevr_test_loader, model, epoch, dictionaries, args)
# SAVE MODEL
filename = 'RN_epoch_{:02d}.pth'.format(epoch)
torch.save(model.state_dict(),
os.path.join(args.model_dirs, filename))