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import warnings | |
warnings.simplefilter(action='ignore', category=FutureWarning) | |
import itertools | |
import os | |
import time | |
import argparse | |
import json | |
import torch | |
import torch.nn.functional as F | |
from torch.utils.tensorboard import SummaryWriter | |
from torch.utils.data import DistributedSampler, DataLoader | |
import torch.multiprocessing as mp | |
from torch.distributed import init_process_group | |
from torch.nn.parallel import DistributedDataParallel | |
from vocoder.hifigan.meldataset import MelDataset, mel_spectrogram, get_dataset_filelist | |
from vocoder.hifigan.models import Generator, MultiPeriodDiscriminator, MultiScaleDiscriminator, feature_loss, generator_loss,\ | |
discriminator_loss | |
from vocoder.hifigan.utils import plot_spectrogram, scan_checkpoint, load_checkpoint, save_checkpoint | |
torch.backends.cudnn.benchmark = True | |
def train(rank, a, h): | |
a.checkpoint_path = a.models_dir.joinpath(a.run_id+'_hifigan') | |
a.checkpoint_path.mkdir(exist_ok=True) | |
a.training_epochs = 3100 | |
a.stdout_interval = 5 | |
a.checkpoint_interval = a.backup_every | |
a.summary_interval = 5000 | |
a.validation_interval = 1000 | |
a.fine_tuning = True | |
a.input_wavs_dir = a.syn_dir.joinpath("audio") | |
a.input_mels_dir = a.syn_dir.joinpath("mels") | |
if h.num_gpus > 1: | |
init_process_group(backend=h.dist_config['dist_backend'], init_method=h.dist_config['dist_url'], | |
world_size=h.dist_config['world_size'] * h.num_gpus, rank=rank) | |
torch.cuda.manual_seed(h.seed) | |
device = torch.device('cuda:{:d}'.format(rank)) | |
generator = Generator(h).to(device) | |
mpd = MultiPeriodDiscriminator().to(device) | |
msd = MultiScaleDiscriminator().to(device) | |
if rank == 0: | |
print(generator) | |
os.makedirs(a.checkpoint_path, exist_ok=True) | |
print("checkpoints directory : ", a.checkpoint_path) | |
if os.path.isdir(a.checkpoint_path): | |
cp_g = scan_checkpoint(a.checkpoint_path, 'g_hifigan_') | |
cp_do = scan_checkpoint(a.checkpoint_path, 'do_hifigan_') | |
steps = 0 | |
if cp_g is None or cp_do is None: | |
state_dict_do = None | |
last_epoch = -1 | |
else: | |
state_dict_g = load_checkpoint(cp_g, device) | |
state_dict_do = load_checkpoint(cp_do, device) | |
generator.load_state_dict(state_dict_g['generator']) | |
mpd.load_state_dict(state_dict_do['mpd']) | |
msd.load_state_dict(state_dict_do['msd']) | |
steps = state_dict_do['steps'] + 1 | |
last_epoch = state_dict_do['epoch'] | |
if h.num_gpus > 1: | |
generator = DistributedDataParallel(generator, device_ids=[rank]).to(device) | |
mpd = DistributedDataParallel(mpd, device_ids=[rank]).to(device) | |
msd = DistributedDataParallel(msd, device_ids=[rank]).to(device) | |
optim_g = torch.optim.AdamW(generator.parameters(), h.learning_rate, betas=[h.adam_b1, h.adam_b2]) | |
optim_d = torch.optim.AdamW(itertools.chain(msd.parameters(), mpd.parameters()), | |
h.learning_rate, betas=[h.adam_b1, h.adam_b2]) | |
if state_dict_do is not None: | |
optim_g.load_state_dict(state_dict_do['optim_g']) | |
optim_d.load_state_dict(state_dict_do['optim_d']) | |
scheduler_g = torch.optim.lr_scheduler.ExponentialLR(optim_g, gamma=h.lr_decay, last_epoch=last_epoch) | |
scheduler_d = torch.optim.lr_scheduler.ExponentialLR(optim_d, gamma=h.lr_decay, last_epoch=last_epoch) | |
training_filelist, validation_filelist = get_dataset_filelist(a) | |
# print(training_filelist) | |
# exit() | |
trainset = MelDataset(training_filelist, h.segment_size, h.n_fft, h.num_mels, | |
h.hop_size, h.win_size, h.sampling_rate, h.fmin, h.fmax, n_cache_reuse=0, | |
shuffle=False if h.num_gpus > 1 else True, fmax_loss=h.fmax_for_loss, device=device, | |
fine_tuning=a.fine_tuning, base_mels_path=a.input_mels_dir) | |
train_sampler = DistributedSampler(trainset) if h.num_gpus > 1 else None | |
train_loader = DataLoader(trainset, num_workers=h.num_workers, shuffle=False, | |
sampler=train_sampler, | |
batch_size=h.batch_size, | |
pin_memory=True, | |
drop_last=True) | |
if rank == 0: | |
validset = MelDataset(validation_filelist, h.segment_size, h.n_fft, h.num_mels, | |
h.hop_size, h.win_size, h.sampling_rate, h.fmin, h.fmax, False, False, n_cache_reuse=0, | |
fmax_loss=h.fmax_for_loss, device=device, fine_tuning=a.fine_tuning, | |
base_mels_path=a.input_mels_dir) | |
validation_loader = DataLoader(validset, num_workers=1, shuffle=False, | |
sampler=None, | |
batch_size=1, | |
pin_memory=True, | |
drop_last=True) | |
sw = SummaryWriter(os.path.join(a.checkpoint_path, 'logs')) | |
generator.train() | |
mpd.train() | |
msd.train() | |
for epoch in range(max(0, last_epoch), a.training_epochs): | |
if rank == 0: | |
start = time.time() | |
print("Epoch: {}".format(epoch+1)) | |
if h.num_gpus > 1: | |
train_sampler.set_epoch(epoch) | |
for i, batch in enumerate(train_loader): | |
if rank == 0: | |
start_b = time.time() | |
x, y, _, y_mel = batch | |
x = torch.autograd.Variable(x.to(device, non_blocking=True)) | |
y = torch.autograd.Variable(y.to(device, non_blocking=True)) | |
y_mel = torch.autograd.Variable(y_mel.to(device, non_blocking=True)) | |
y = y.unsqueeze(1) | |
y_g_hat = generator(x) | |
y_g_hat_mel = mel_spectrogram(y_g_hat.squeeze(1), h.n_fft, h.num_mels, h.sampling_rate, h.hop_size, h.win_size, | |
h.fmin, h.fmax_for_loss) | |
if steps > h.disc_start_step: | |
optim_d.zero_grad() | |
# MPD | |
y_df_hat_r, y_df_hat_g, _, _ = mpd(y, y_g_hat.detach()) | |
loss_disc_f, losses_disc_f_r, losses_disc_f_g = discriminator_loss(y_df_hat_r, y_df_hat_g) | |
# MSD | |
y_ds_hat_r, y_ds_hat_g, _, _ = msd(y, y_g_hat.detach()) | |
loss_disc_s, losses_disc_s_r, losses_disc_s_g = discriminator_loss(y_ds_hat_r, y_ds_hat_g) | |
loss_disc_all = loss_disc_s + loss_disc_f | |
loss_disc_all.backward() | |
optim_d.step() | |
# Generator | |
optim_g.zero_grad() | |
# L1 Mel-Spectrogram Loss | |
loss_mel = F.l1_loss(y_mel, y_g_hat_mel) * 45 | |
if steps > h.disc_start_step: | |
y_df_hat_r, y_df_hat_g, fmap_f_r, fmap_f_g = mpd(y, y_g_hat) | |
y_ds_hat_r, y_ds_hat_g, fmap_s_r, fmap_s_g = msd(y, y_g_hat) | |
loss_fm_f = feature_loss(fmap_f_r, fmap_f_g) | |
loss_fm_s = feature_loss(fmap_s_r, fmap_s_g) | |
loss_gen_f, losses_gen_f = generator_loss(y_df_hat_g) | |
loss_gen_s, losses_gen_s = generator_loss(y_ds_hat_g) | |
loss_gen_all = loss_gen_s + loss_gen_f + loss_fm_s + loss_fm_f + loss_mel | |
else: | |
loss_gen_all = loss_mel | |
loss_gen_all.backward() | |
optim_g.step() | |
if rank == 0: | |
# STDOUT logging | |
if steps % a.stdout_interval == 0: | |
with torch.no_grad(): | |
mel_error = F.l1_loss(y_mel, y_g_hat_mel).item() | |
print('Steps : {:d}, Gen Loss Total : {:4.3f}, Mel-Spec. Error : {:4.3f}, s/b : {:4.3f}'. | |
format(steps, loss_gen_all, mel_error, time.time() - start_b)) | |
# checkpointing | |
if steps % a.checkpoint_interval == 0 and steps != 0: | |
checkpoint_path = "{}/g_hifigan_{:08d}.pt".format(a.checkpoint_path, steps) | |
save_checkpoint(checkpoint_path, | |
{'generator': (generator.module if h.num_gpus > 1 else generator).state_dict()}) | |
checkpoint_path = "{}/do_hifigan_{:08d}.pt".format(a.checkpoint_path, steps) | |
save_checkpoint(checkpoint_path, | |
{'mpd': (mpd.module if h.num_gpus > 1 else mpd).state_dict(), | |
'msd': (msd.module if h.num_gpus > 1 else msd).state_dict(), | |
'optim_g': optim_g.state_dict(), 'optim_d': optim_d.state_dict(), 'steps': steps, | |
'epoch': epoch}) | |
# Tensorboard summary logging | |
if steps % a.summary_interval == 0: | |
sw.add_scalar("training/gen_loss_total", loss_gen_all, steps) | |
sw.add_scalar("training/mel_spec_error", mel_error, steps) | |
# save temperate hifigan model | |
if steps % a.save_every == 0: | |
checkpoint_path = "{}/g_hifigan.pt".format(a.checkpoint_path) | |
save_checkpoint(checkpoint_path, | |
{'generator': (generator.module if h.num_gpus > 1 else generator).state_dict()}) | |
checkpoint_path = "{}/do_hifigan.pt".format(a.checkpoint_path) | |
save_checkpoint(checkpoint_path, | |
{'mpd': (mpd.module if h.num_gpus > 1 else mpd).state_dict(), | |
'msd': (msd.module if h.num_gpus > 1 else msd).state_dict(), | |
'optim_g': optim_g.state_dict(), 'optim_d': optim_d.state_dict(), 'steps': steps, | |
'epoch': epoch}) | |
# Validation | |
if steps % a.validation_interval == 0: # and steps != 0: | |
generator.eval() | |
torch.cuda.empty_cache() | |
val_err_tot = 0 | |
with torch.no_grad(): | |
for j, batch in enumerate(validation_loader): | |
x, y, _, y_mel = batch | |
y_g_hat = generator(x.to(device)) | |
y_mel = torch.autograd.Variable(y_mel.to(device, non_blocking=True)) | |
y_g_hat_mel = mel_spectrogram(y_g_hat.squeeze(1), h.n_fft, h.num_mels, h.sampling_rate, | |
h.hop_size, h.win_size, | |
h.fmin, h.fmax_for_loss) | |
# val_err_tot += F.l1_loss(y_mel, y_g_hat_mel).item() | |
if j <= 4: | |
if steps == 0: | |
sw.add_audio('gt/y_{}'.format(j), y[0], steps, h.sampling_rate) | |
sw.add_figure('gt/y_spec_{}'.format(j), plot_spectrogram(x[0]), steps) | |
sw.add_audio('generated/y_hat_{}'.format(j), y_g_hat[0], steps, h.sampling_rate) | |
y_hat_spec = mel_spectrogram(y_g_hat.squeeze(1), h.n_fft, h.num_mels, | |
h.sampling_rate, h.hop_size, h.win_size, | |
h.fmin, h.fmax) | |
sw.add_figure('generated/y_hat_spec_{}'.format(j), | |
plot_spectrogram(y_hat_spec.squeeze(0).cpu().numpy()), steps) | |
val_err = val_err_tot / (j+1) | |
sw.add_scalar("validation/mel_spec_error", val_err, steps) | |
generator.train() | |
steps += 1 | |
scheduler_g.step() | |
scheduler_d.step() | |
if rank == 0: | |
print('Time taken for epoch {} is {} sec\n'.format(epoch + 1, int(time.time() - start))) | |