def do_train(self,
paths,
dataset,
optimiser,
epochs,
batch_size,
step,
lr=1e-4,
valid_index=[],
use_half=False,
do_clip=False):
if use_half:
import apex
optimiser = apex.fp16_utils.FP16_Optimizer(optimiser,
dynamic_loss_scale=True)
for p in optimiser.param_groups:
p['lr'] = lr
criterion = nn.NLLLoss().cuda()
k = 0
saved_k = 0
pad_left = self.pad_left()
pad_left_encoder = self.pad_left_encoder()
pad_left_decoder = self.pad_left_decoder()
if self.noise_x:
extra_pad_right = 127
else:
extra_pad_right = 0
pad_right = self.pad_right() + extra_pad_right
window = 16 * self.total_scale()
logger.log(
f'pad_left={pad_left_encoder}|{pad_left_decoder}, pad_right={pad_right}, total_scale={self.total_scale()}'
)
for e in range(epochs):
trn_loader = DataLoader(
dataset,
collate_fn=lambda batch: env.collate_multispeaker_samples(
pad_left, window, pad_right, batch),
batch_size=batch_size,
num_workers=2,
shuffle=True,
pin_memory=True)
start = time.time()
running_loss_c = 0.
running_loss_f = 0.
running_loss_vq = 0.
running_loss_vqc = 0.
running_entropy = 0.
running_max_grad = 0.
running_max_grad_name = ""
iters = len(trn_loader)
for i, (speaker, wave16) in enumerate(trn_loader):
speaker = speaker.cuda()
wave16 = wave16.cuda()
coarse = (wave16 + 2**15) // 256
fine = (wave16 + 2**15) % 256
coarse_f = coarse.float() / 127.5 - 1.
fine_f = fine.float() / 127.5 - 1.
total_f = (wave16.float() + 0.5) / 32767.5
if self.noise_y:
noisy_f = total_f * (
0.02 * torch.randn(total_f.size(0), 1).cuda()
).exp() + 0.003 * torch.randn_like(total_f)
else:
noisy_f = total_f
if use_half:
coarse_f = coarse_f.half()
fine_f = fine_f.half()
noisy_f = noisy_f.half()
x = torch.cat([
coarse_f[:, pad_left -
pad_left_decoder:-pad_right].unsqueeze(-1),
fine_f[:, pad_left -
pad_left_decoder:-pad_right].unsqueeze(-1),
coarse_f[:, pad_left - pad_left_decoder + 1:1 -
pad_right].unsqueeze(-1),
],
dim=2)
y_coarse = coarse[:, pad_left + 1:1 - pad_right]
y_fine = fine[:, pad_left + 1:1 - pad_right]
if self.noise_x:
# Randomly translate the input to the encoder to encourage
# translational invariance
total_len = coarse_f.size(1)
translated = []
for j in range(coarse_f.size(0)):
shift = random.randrange(256) - 128
translated.append(
noisy_f[j, pad_left - pad_left_encoder +
shift:total_len - extra_pad_right + shift])
translated = torch.stack(translated, dim=0)
else:
translated = noisy_f[:, pad_left - pad_left_encoder:]
p_cf, vq_pen, encoder_pen, entropy = self(
speaker, x, translated)
p_c, p_f = p_cf
loss_c = criterion(p_c.transpose(1, 2).float(), y_coarse)
loss_f = criterion(p_f.transpose(1, 2).float(), y_fine)
encoder_weight = 0.01 * min(1, max(0.1, step / 1000 - 1))
loss = loss_c + loss_f + vq_pen + encoder_weight * encoder_pen
optimiser.zero_grad()
if use_half:
optimiser.backward(loss)
if do_clip:
raise RuntimeError(
"clipping in half precision is not implemented yet"
)
else:
loss.backward()
if do_clip:
max_grad = 0
max_grad_name = ""
for name, param in self.named_parameters():
if param.grad is not None:
param_max_grad = param.grad.data.abs().max()
if param_max_grad > max_grad:
max_grad = param_max_grad
max_grad_name = name
if 1000000 < param_max_grad:
logger.log(
f'Very large gradient at {name}: {param_max_grad}'
)
if 100 < max_grad:
for param in self.parameters():
if param.grad is not None:
if 1000000 < max_grad:
param.grad.data.zero_()
else:
param.grad.data.mul_(100 / max_grad)
if running_max_grad < max_grad:
running_max_grad = max_grad
running_max_grad_name = max_grad_name
if 100000 < max_grad:
torch.save(self.state_dict(), "bad_model.pyt")
raise RuntimeError(
"Aborting due to crazy gradient (model saved to bad_model.pyt)"
)
optimiser.step()
running_loss_c += loss_c.item()
running_loss_f += loss_f.item()
running_loss_vq += vq_pen.item()
running_loss_vqc += encoder_pen.item()
running_entropy += entropy
self.after_update()
speed = (i + 1) / (time.time() - start)
avg_loss_c = running_loss_c / (i + 1)
avg_loss_f = running_loss_f / (i + 1)
avg_loss_vq = running_loss_vq / (i + 1)
avg_loss_vqc = running_loss_vqc / (i + 1)
avg_entropy = running_entropy / (i + 1)
step += 1
k = step // 1000
logger.status(
f'Epoch: {e+1}/{epochs} -- Batch: {i+1}/{iters} -- Loss: c={avg_loss_c:#.4} f={avg_loss_f:#.4} vq={avg_loss_vq:#.4} vqc={avg_loss_vqc:#.4} -- Entropy: {avg_entropy:#.4} -- Grad: {running_max_grad:#.1} {running_max_grad_name} Speed: {speed:#.4} steps/sec -- Step: {k}k '
)
os.makedirs(paths.checkpoint_dir, exist_ok=True)
torch.save(self.state_dict(), paths.model_path())
np.save(paths.step_path(), step)
logger.log_current_status()
logger.log(
f' <saved>; w[0][0] = {self.overtone.wavernn.gru.weight_ih_l0[0][0]}'
)
if k > saved_k + 50:
torch.save(self.state_dict(), paths.model_hist_path(step))
saved_k = k
self.do_generate(paths, step, dataset.path, valid_index)
def do_train(self,
paths,
dataset,
optimiser,
epochs,
batch_size,
step,
lr=1e-4,
valid_index=[],
use_half=False):
if use_half:
import apex
optimiser = apex.fp16_utils.FP16_Optimizer(optimiser,
dynamic_loss_scale=True)
for p in optimiser.param_groups:
p['lr'] = lr
criterion = nn.NLLLoss().cuda()
k = 0
saved_k = 0
print(win_length, hop_length, win_length / hop_length)
for e in range(epochs):
# trn_loader = DataLoader(dataset, collate_fn=lambda batch: env.collate(0, int( win_length/hop_length), 0, batch), batch_size=batch_size,
# num_workers=2, shuffle=True, pin_memory=True)
trn_loader = DataLoader(
dataset,
collate_fn=lambda batch: env.collate(0, 16, 0, batch),
batch_size=batch_size,
num_workers=2,
shuffle=True,
pin_memory=True)
start = time.time()
running_loss_c = 0.
running_loss_f = 0.
iters = len(trn_loader)
for i, (mels, coarse, fine, coarse_f,
fine_f) in enumerate(trn_loader):
mels, coarse, fine, coarse_f, fine_f = mels.cuda(
), coarse.cuda(), fine.cuda(), coarse_f.cuda(), fine_f.cuda()
coarse, fine, coarse_f, fine_f = [
t[:, hop_length:1 - hop_length]
for t in [coarse, fine, coarse_f, fine_f]
]
if use_half:
mels = mels.half()
coarse_f = coarse_f.half()
fine_f = fine_f.half()
x = torch.cat([
coarse_f[:, :-1].unsqueeze(-1),
fine_f[:, :-1].unsqueeze(-1), coarse_f[:, 1:].unsqueeze(-1)
],
dim=2)
p_c, p_f, _h_n = self(x, mels)
loss_c = criterion(p_c.transpose(1, 2).float(), coarse[:, 1:])
loss_f = criterion(p_f.transpose(1, 2).float(), fine[:, 1:])
loss = loss_c + loss_f
optimiser.zero_grad()
if use_half:
optimiser.backward(loss)
else:
loss.backward()
optimiser.step()
running_loss_c += loss_c.item()
running_loss_f += loss_f.item()
self.after_update()
speed = (i + 1) / (time.time() - start)
avg_loss_c = running_loss_c / (i + 1)
avg_loss_f = running_loss_f / (i + 1)
step += 1
k = step // 1000
logger.status(
f'Epoch: {e+1}/{epochs} -- Batch: {i+1}/{iters} -- Loss: c={avg_loss_c:#.4} f={avg_loss_f:#.4} -- Speed: {speed:#.4} steps/sec -- Step: {k}k '
)
os.makedirs(paths.checkpoint_dir, exist_ok=True)
torch.save(self.state_dict(), paths.model_path())
np.save(paths.step_path(), step)
logger.log_current_status()
logger.log(
f' <saved>; w[0][0] = {self.wavernn.gru.weight_ih_l0[0][0]}')
if k > saved_k + 50:
torch.save(self.state_dict(), paths.model_hist_path(step))
saved_k = k
self.do_generate(paths,
step,
dataset.path,
valid_index,
use_half=use_half)
def do_train(self,
paths,
dataset,
optimiser,
epochs,
batch_size,
step,
lr=1e-4,
valid_index=[],
use_half=False):
if use_half:
import apex
optimiser = apex.fp16_utils.FP16_Optimizer(optimiser,
dynamic_loss_scale=True)
for p in optimiser.param_groups:
p['lr'] = lr
criterion = nn.NLLLoss().cuda()
k = 0
saved_k = 0
pad_left = self.overtone.pad()
time_span = 16 * 64
for e in range(epochs):
trn_loader = DataLoader(
dataset,
collate_fn=lambda batch: env.collate_samples(
pad_left, time_span, 1, batch),
batch_size=batch_size,
num_workers=2,
shuffle=True,
pin_memory=True)
start = time.time()
running_loss_c = 0.
running_loss_f = 0.
max_grad = 0.
max_grad_name = ""
iters = len(trn_loader)
for i, wave16 in enumerate(trn_loader):
wave16 = wave16.to(self.DEVICE)
coarse = (wave16 + 2**15) // 256
fine = (wave16 + 2**15) % 256
coarse_f = coarse.float() / 127.5 - 1.
fine_f = fine.float() / 127.5 - 1.
if use_half:
coarse_f = coarse_f.half()
fine_f = fine_f.half()
x = torch.cat([
coarse_f[:, :-1].unsqueeze(-1),
fine_f[:, :-1].unsqueeze(-1),
coarse_f[:, 1:].unsqueeze(-1),
],
dim=2)
y_coarse = coarse[:, pad_left + 1:]
y_fine = fine[:, pad_left + 1:]
p_c, p_f = self(x)
loss_c = criterion(p_c.transpose(1, 2).float(), y_coarse)
loss_f = criterion(p_f.transpose(1, 2).float(), y_fine)
loss = loss_c + loss_f
optimiser.zero_grad()
if use_half:
optimiser.backward(loss)
else:
loss.backward()
for name, param in self.named_parameters():
param_max_grad = param.grad.data.abs().max()
if param_max_grad > max_grad:
max_grad = param_max_grad
max_grad_name = name
nn.utils.clip_grad_norm_(self.parameters(), 1, 'inf')
optimiser.step()
running_loss_c += loss_c.item()
running_loss_f += loss_f.item()
self.after_update()
speed = (i + 1) / (time.time() - start)
avg_loss_c = running_loss_c / (i + 1)
avg_loss_f = running_loss_f / (i + 1)
step += 1
k = step // 1000
logger.status(
f'Epoch: {e+1}/{epochs} -- Batch: {i+1}/{iters} -- Loss: c={avg_loss_c:#.4} f={avg_loss_f:#.4} -- Grad: {max_grad:#.1} {max_grad_name} Speed: {speed:#.4} steps/sec -- Step: {k}k '
)
torch.save(self.state_dict(), paths.model_path())
np.save(paths.step_path(), step)
logger.log_current_status()
logger.log(
f' <saved>; w[0][0] = {self.overtone.wavernn.gru.weight_ih_l0[0][0]}'
)
if k > saved_k + 50:
torch.save(self.state_dict(), paths.model_hist_path(step))
saved_k = k
self.do_generate(paths, step, dataset.path, valid_index)
logger.log('done generation')