def test_observation_data(self):
""" Test observation data """
transform = transforms.ToTensor()
dataset = RolloutObservationDataset('datasets/carracing', transform)
loader = torch.utils.data.DataLoader(dataset, batch_size=32, shuffle=True,
num_workers=8)
dataset.load_next_buffer()
init_time = time.time()
for i, data in enumerate(loader):
if i == 150:
self.assertEqual(data.size(), torch.Size([32, 3, 96, 96]))
break
end_time = time.time()
print("WallTime: {}s".format(end_time - init_time))
def test_observation_data(self):
""" Test observation data """
transform = transforms.ToTensor()
dataset = RolloutObservationDataset('datasets/carracing', transform)
loader = torch.utils.data.DataLoader(dataset,
batch_size=32,
shuffle=True,
num_workers=8)
dataset.load_next_buffer()
init_time = time.time()
for i, data in enumerate(loader):
if i == 150:
self.assertEqual(data.size(), torch.Size([32, 3, 96, 96]))
break
end_time = time.time()
print("WallTime: {}s".format(end_time - init_time))
def make_vae_dataset(rollout_dir):
step_log('2-1. make_vae_dataset START!!')
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset(rollout_dir,
transform_train,
train=True)
dataset_test = RolloutObservationDataset(rollout_dir,
transform_test,
train=False)
return dataset_train, dataset_test
optimizer_p.load_state_dict(state['optimizer'])
print('prediction load success')
state = torch.load('/home/ld/gym-car/log/vae/vae_checkpoint_52.pkl')
model.load_state_dict(state['state_dict'])
optimizer.load_state_dict(state['optimizer'])
trained=state['epoch']
print('vae load success')
trained=0
cur_best = None
all_data=6000
sample_data=1000
sample_buff=all_data/sample_data
sample_count=0
training_sample=0
for epoch in range(trained+1, args.epochs + 1):
dataset_train = RolloutObservationDataset('/data/result/',transform_train, train=True,sample_data=sample_data,sample_count=sample_count)
#dataset_test = RolloutObservationDataset('/data/result/',transform_test, train=False,sample_data=sample_data,sample_count=sample_count)
sample_count+=1
if sample_count==sample_buff:
sample_count=0
train_loader = torch.utils.data.DataLoader(
dataset_train, batch_size=args.batch_size, shuffle=True, num_workers=32,drop_last=True)
# test_loader = torch.utils.data.DataLoader(
# dataset_test, batch_size=args.batch_size, shuffle=False, num_workers=32,drop_last=True)
training_sample=train(epoch,vae_dir,training_sample)
#exit()
#test_loss = test()
# scheduler.step(test_loss)
# earlystopping.step(test_loss)
# checkpointing
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset('datasets/pacman',
transform_train,
train=True)
dataset_test = RolloutObservationDataset('datasets/pacman',
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
model = VAE(3, LSIZE).to(device)
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset('datasets/carracing',
transform_train,
train=True)
dataset_test = RolloutObservationDataset('datasets/carracing',
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.max_workers)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.max_workers)
model = VAE(3, LSIZE).to(device)
optimizer = optim.Adam(model.parameters())
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
# transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_val = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset(
'datasets/carnav',
transform_train,
train=True,
num_val_rollouts=args.num_val_rollouts)
dataset_val = RolloutObservationDataset('datasets/carnav',
transform_val,
train=False,
num_val_rollouts=args.num_val_rollouts)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
val_loader = torch.utils.data.DataLoader(dataset_val,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
def train_vae(logdir, traindir, epochs=100, testdir=None):
print('Training VAE using traindir', traindir)
batch_size = 100 # maybe should change this back to their initial one of 32
noreload = False #Best model is not reloaded if specified
nosamples = False #'Does not save samples during training if specified'
testdir = testdir if testdir else traindir
torch.manual_seed(123)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset(traindir,
transform_train,
train=True)
dataset_test = RolloutObservationDataset(testdir,
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=batch_size,
shuffle=True,
num_workers=2)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=batch_size,
shuffle=True,
num_workers=2)
model = VAE(3, LSIZE).to(device)
optimizer = optim.Adam(model.parameters())
scheduler = ReduceLROnPlateau(optimizer, 'min', factor=0.5, patience=5)
earlystopping = EarlyStopping('min', patience=30)
# Reconstruction + KL divergence losses summed over all elements and batch
def loss_function(recon_x, x, mu, logsigma):
""" VAE loss function """
BCE = F.mse_loss(recon_x, x, size_average=False)
# see Appendix B from VAE paper:
# Kingma and Welling. Auto-Encoding Variational Bayes. ICLR, 2014
# https://arxiv.org/abs/1312.6114
# 0.5 * sum(1 + log(sigma^2) - mu^2 - sigma^2)
KLD = -0.5 * torch.sum(1 + 2 * logsigma - mu.pow(2) -
(2 * logsigma).exp())
return BCE + KLD
def train(epoch):
""" One training epoch """
model.train()
dataset_train.load_next_buffer()
train_loss = 0
for batch_idx, data in enumerate(train_loader):
data = data.to(device)
optimizer.zero_grad()
recon_batch, mu, logvar = model(data)
loss = loss_function(recon_batch, data, mu, logvar)
loss.backward()
train_loss += loss.item()
optimizer.step()
if batch_idx % 20 == 0:
print('Train Epoch: {} [{}/{} ({:.0f}%)]\tLoss: {:.6f}'.format(
epoch, batch_idx * len(data), len(train_loader.dataset),
100. * batch_idx / len(train_loader),
loss.item() / len(data)))
print('====> Epoch: {} Average loss: {:.4f}'.format(
epoch, train_loss / len(train_loader.dataset)))
def test():
""" One test epoch """
model.eval()
dataset_test.load_next_buffer()
test_loss = 0
with torch.no_grad():
for data in test_loader:
data = data.to(device)
recon_batch, mu, logvar = model(data)
test_loss += loss_function(recon_batch, data, mu,
logvar).item()
test_loss /= len(test_loader.dataset)
print('====> Test set loss: {:.4f}'.format(test_loss))
return test_loss
# check vae dir exists, if not, create it
vae_dir = join(logdir, 'vae')
if not exists(vae_dir):
mkdir(vae_dir)
mkdir(join(vae_dir, 'samples'))
reload_file = join(vae_dir, 'best.tar')
if not noreload and exists(reload_file):
state = torch.load(reload_file)
print("Reloading model at epoch {}"
", with test error {}".format(state['epoch'],
state['precision']))
model.load_state_dict(state['state_dict'])
optimizer.load_state_dict(state['optimizer'])
scheduler.load_state_dict(state['scheduler'])
earlystopping.load_state_dict(state['earlystopping'])
cur_best = None
for epoch in range(1, epochs + 1):
train(epoch)
test_loss = test()
scheduler.step(test_loss)
earlystopping.step(test_loss)
# checkpointing
best_filename = join(vae_dir, 'best.tar')
filename = join(vae_dir, 'checkpoint.tar')
is_best = not cur_best or test_loss < cur_best
if is_best:
cur_best = test_loss
save_checkpoint(
{
'epoch': epoch,
'state_dict': model.state_dict(),
'precision': test_loss,
'optimizer': optimizer.state_dict(),
'scheduler': scheduler.state_dict(),
'earlystopping': earlystopping.state_dict()
}, is_best, filename, best_filename)
if not nosamples:
with torch.no_grad():
sample = torch.randn(RED_SIZE, LSIZE).to(device)
sample = model.decoder(sample).cpu()
save_image(
sample.view(64, 3, RED_SIZE, RED_SIZE),
join(vae_dir, 'samples/sample_' + str(epoch) + '.png'))
if earlystopping.stop:
print(
"End of Training because of early stopping at epoch {}".format(
epoch))
break
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
# transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset('./datasets/control',
transform_train,
train=True)
dataset_test = RolloutObservationDataset('./datasets/control',
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=8,
drop_last=True)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=8,
drop_last=True)
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_dir = args.dataset_dir
if args.iteration_num is not None:
dataset_dir = join(args.dataset_dir, 'iter_{}'.format(args.iteration_num))
dataset_train = RolloutObservationDataset(dataset_dir,
transform_train,
train=True)
dataset_test = RolloutObservationDataset(dataset_dir,
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
model = VAE(3, LSIZE).to(device)
optimizer = optim.Adam(model.parameters())
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset(root=args.datadir,
transform=transform_train,
train_size=60,
train=True)
dataset_test = RolloutObservationDataset(root=args.datadir,
transform=transform_test,
train_size=60,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
model = VAE(3, LSIZE).to(device)
transform_train = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToPILImage(),
transforms.Resize((RED_SIZE, RED_SIZE)),
transforms.ToTensor(),
])
dataset_train = RolloutObservationDataset(join(args.datasets, 'carracing'),
transform_train,
train=True)
dataset_test = RolloutObservationDataset(join(args.datasets, 'carracing'),
transform_test,
train=False)
train_loader = torch.utils.data.DataLoader(dataset_train,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
test_loader = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
shuffle=True,
num_workers=2)
model = VAE(3, LSIZE).to(device)
optimizer = optim.Adam(model.parameters())
