def train(n_gpus,
rank,
output_directory,
epochs,
optim_algo,
learning_rate,
weight_decay,
sigma,
iters_per_checkpoint,
batch_size,
seed,
checkpoint_path,
ignore_layers,
include_layers,
finetune_layers,
warmstart_checkpoint_path,
with_tensorboard,
grad_clip_val,
fp16_run,
tensorboard_path=None):
fp16_run = bool(fp16_run)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
if n_gpus > 1:
init_distributed(rank, n_gpus, **dist_config)
criterion = FlowtronLoss(sigma, bool(model_config['n_components']),
bool(model_config['use_gate_layer']))
model = Flowtron(**model_config).cuda()
if len(finetune_layers):
for name, param in model.named_parameters():
if name in finetune_layers:
param.requires_grad = True
else:
param.requires_grad = False
print("Initializing %s optimizer" % (optim_algo))
if optim_algo == 'Adam':
optimizer = torch.optim.Adam(model.parameters(),
lr=learning_rate,
weight_decay=weight_decay)
elif optim_algo == 'RAdam':
optimizer = RAdam(model.parameters(),
lr=learning_rate,
weight_decay=weight_decay)
else:
print("Unrecognized optimizer %s!" % (optim_algo))
exit(1)
# Load checkpoint if one exists
iteration = 0
if warmstart_checkpoint_path != "":
model = warmstart(warmstart_checkpoint_path, model)
if checkpoint_path != "":
model, optimizer, iteration = load_checkpoint(checkpoint_path, model,
optimizer, ignore_layers)
iteration += 1 # next iteration is iteration + 1
if n_gpus > 1:
model = apply_gradient_allreduce(model)
print(model)
scaler = amp.GradScaler(enabled=fp16_run)
train_loader, valset, collate_fn = prepare_dataloaders(
data_config, n_gpus, batch_size)
# Get shared output_directory ready
if rank == 0 and not os.path.isdir(output_directory):
os.makedirs(output_directory)
os.chmod(output_directory, 0o775)
print("Output directory", output_directory)
if with_tensorboard and rank == 0:
tboard_out_path = tensorboard_path
if tensorboard_path is None:
tboard_out_path = os.path.join(output_directory, "logs/run1")
print("Setting up Tensorboard log in %s" % (tboard_out_path))
logger = FlowtronLogger(tboard_out_path)
# force set the learning rate to what is specified
for param_group in optimizer.param_groups:
param_group['lr'] = learning_rate
model.train()
epoch_offset = max(0, int(iteration / len(train_loader)))
# ================ MAIN TRAINNIG LOOP! ===================
for epoch in range(epoch_offset, epochs):
print("Epoch: {}".format(epoch))
for batch in train_loader:
model.zero_grad()
mel, speaker_vecs, text, in_lens, out_lens, gate_target, attn_prior = batch
mel, speaker_vecs, text = mel.cuda(), speaker_vecs.cuda(
), text.cuda()
in_lens, out_lens, gate_target = in_lens.cuda(), out_lens.cuda(
), gate_target.cuda()
attn_prior = attn_prior.cuda() if valset.use_attn_prior else None
with amp.autocast(enabled=fp16_run):
z, log_s_list, gate_pred, attn, mean, log_var, prob = model(
mel, speaker_vecs, text, in_lens, out_lens, attn_prior)
loss_nll, loss_gate = criterion(
(z, log_s_list, gate_pred, mean, log_var, prob),
gate_target, out_lens)
loss = loss_nll + loss_gate
if n_gpus > 1:
reduced_loss = reduce_tensor(loss.data, n_gpus).item()
reduced_gate_loss = reduce_tensor(loss_gate.data,
n_gpus).item()
reduced_nll_loss = reduce_tensor(loss_nll.data, n_gpus).item()
else:
reduced_loss = loss.item()
reduced_gate_loss = loss_gate.item()
reduced_nll_loss = loss_nll.item()
scaler.scale(loss).backward()
if grad_clip_val > 0:
scaler.unscale_(optimizer)
torch.nn.utils.clip_grad_norm_(model.parameters(),
grad_clip_val)
scaler.step(optimizer)
scaler.update()
if rank == 0:
print("{}:\t{:.9f}".format(iteration, reduced_loss),
flush=True)
if with_tensorboard and rank == 0:
logger.add_scalar('training_loss', reduced_loss, iteration)
logger.add_scalar('training_loss_gate', reduced_gate_loss,
iteration)
logger.add_scalar('training_loss_nll', reduced_nll_loss,
iteration)
logger.add_scalar('learning_rate', learning_rate, iteration)
if iteration % iters_per_checkpoint == 0:
val_loss, val_loss_nll, val_loss_gate, attns, gate_pred, gate_target = compute_validation_loss(
model, criterion, valset, collate_fn, batch_size, n_gpus)
if rank == 0:
print("Validation loss {}: {:9f} ".format(
iteration, val_loss))
if with_tensorboard:
logger.log_validation(val_loss, val_loss_nll,
val_loss_gate, attns, gate_pred,
gate_target, iteration)
checkpoint_path = "{}/model_{}".format(
output_directory, iteration)
save_checkpoint(model, optimizer, learning_rate, iteration,
checkpoint_path)
iteration += 1
def train(n_gpus, rank, output_directory, epochs, learning_rate, weight_decay,
sigma, iters_per_checkpoint, batch_size, seed, checkpoint_path,
ignore_layers, include_layers, warmstart_checkpoint_path,
with_tensorboard, fp16_run):
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
if n_gpus > 1:
init_distributed(rank, n_gpus, **dist_config)
criterion = FlowtronLoss(sigma, bool(model_config['n_components']),
model_config['use_gate_layer'])
model = Flowtron(**model_config).cuda()
optimizer = torch.optim.Adam(model.parameters(),
lr=learning_rate,
weight_decay=weight_decay)
# Load checkpoint if one exists
iteration = 0
if warmstart_checkpoint_path != "":
model = warmstart(warmstart_checkpoint_path, model)
if checkpoint_path != "":
model, optimizer, iteration = load_checkpoint(checkpoint_path, model,
optimizer, ignore_layers)
iteration += 1 # next iteration is iteration + 1
if n_gpus > 1:
model = apply_gradient_allreduce(model)
print(model)
if fp16_run:
from apex import amp
model, optimizer = amp.initialize(model, optimizer, opt_level='O1')
train_loader, valset, collate_fn = prepare_dataloaders(
data_config, n_gpus, batch_size)
# Get shared output_directory ready
if rank == 0 and not os.path.isdir(output_directory):
os.makedirs(output_directory)
os.chmod(output_directory, 0o775)
print("output directory", output_directory)
if with_tensorboard and rank == 0:
logger = FlowtronLogger(os.path.join(output_directory, 'logs'))
model.train()
epoch_offset = max(0, int(iteration / len(train_loader)))
# ================ MAIN TRAINNIG LOOP! ===================
for epoch in range(epoch_offset, epochs):
print("Epoch: {}".format(epoch))
for batch in train_loader:
model.zero_grad()
mel, speaker_vecs, text, in_lens, out_lens, gate_target = batch
mel, speaker_vecs, text = mel.cuda(), speaker_vecs.cuda(
), text.cuda()
in_lens, out_lens, gate_target = in_lens.cuda(), out_lens.cuda(
), gate_target.cuda()
z, log_s_list, gate_pred, attn, mean, log_var, prob = model(
mel, speaker_vecs, text, in_lens, out_lens)
loss = criterion((z, log_s_list, gate_pred, mean, log_var, prob),
gate_target, out_lens)
if n_gpus > 1:
reduced_loss = reduce_tensor(loss.data, n_gpus).item()
else:
reduced_loss = loss.item()
if fp16_run:
with amp.scale_loss(loss, optimizer) as scaled_loss:
scaled_loss.backward()
else:
loss.backward()
optimizer.step()
if rank == 0:
print("{}:\t{:.9f}".format(iteration, reduced_loss),
flush=True)
if with_tensorboard and rank == 0:
logger.add_scalar('training_loss', reduced_loss, iteration)
logger.add_scalar('learning_rate', learning_rate, iteration)
if (iteration % iters_per_checkpoint == 0):
val_loss, attns, gate_pred, gate_target = compute_validation_loss(
model, criterion, valset, collate_fn, batch_size, n_gpus)
if rank == 0:
print("Validation loss {}: {:9f} ".format(
iteration, val_loss))
if with_tensorboard:
logger.log_validation(val_loss, attns, gate_pred,
gate_target, iteration)
checkpoint_path = "{}/model_{}".format(
output_directory, iteration)
save_checkpoint(model, optimizer, learning_rate, iteration,
checkpoint_path)
iteration += 1
