forked from SMART-TTS/SMART-Vocoder
-
Notifications
You must be signed in to change notification settings - Fork 0
/
train_merged_stft.py
321 lines (253 loc) · 10.9 KB
/
train_merged_stft.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
import torch
import torch.nn as nn
from torch import optim
from torch.utils.data import DataLoader
from torch.distributions.normal import Normal
from torch.cuda.amp import GradScaler, autocast
from args_merged import parse_args
from data import KORDataset, collate_fn_tr, collate_fn_synth
from hps import Hyperparameters
from model import SmartVocoder
from utils import actnorm_init, get_logger, mkdir, stft
import numpy as np
import librosa
import os
import time
import datetime
import json
import gc
torch.backends.cudnn.benchmark = True
np.set_printoptions(precision=4)
def load_dataset(args):
train_dataset = KORDataset(args.data_path, True, 0.1)
test_dataset = KORDataset(args.data_path, False, 0.1)
collate_fn1 = lambda batch: collate_fn_tr(batch, args.max_time_steps, args.hop_length)
collate_fn2 = lambda batch: collate_fn_synth(batch, args.hop_length)
train_loader = DataLoader(train_dataset, batch_size=args.bsz, shuffle=True, collate_fn=collate_fn1,
num_workers=args.num_workers, pin_memory=True)
test_loader = DataLoader(test_dataset, batch_size=args.bsz, collate_fn=collate_fn1,
num_workers=args.num_workers, pin_memory=True)
synth_loader = DataLoader(test_dataset, batch_size=1, collate_fn=collate_fn2,
num_workers=args.num_workers, pin_memory=True)
print('num of train samples', len(train_loader))
print('num of test samples', len(test_loader))
return train_loader, test_loader, synth_loader
def build_model(hps, log):
model = SmartVocoder(hps)
n_params = sum(p.numel() for p in model.parameters() if p.requires_grad)
# print(model)
print('number of parameters:', n_params)
state = {}
state['n_params'] = n_params
log.write('%s\n' % json.dumps(state))
log.flush()
return model
def train(epoch, model, optimizer, scaler, scheduler, log_train, args):
global global_step
global start_time
epoch_loss = 0.0
running_loss = [0., 0., 0.]
log_interval = args.log_interval
synth_interval = args.synth_interval
timestemp = time.time()
model.train()
criterion_frame = nn.MSELoss()
for batch_idx, (x, c) in enumerate(train_loader):
global_step += 1
optimizer.zero_grad()
with autocast():
x, c = x.to(device), c.to(device)
log_p, log_det = model(x, c)
loss = -(log_p + log_det)
scaler.scale(loss).backward()
with autocast():
z = torch.randn_like(x)
y_gen = model.reverse(z, c)
stft_est = stft(y_gen[:, 0], scale='linear')
stft_gt = stft(x[:, 0], scale='linear')
loss_frame = 0.005 * criterion_frame(stft_est, stft_gt)
scaler.scale(loss_frame).backward()
if torch.isnan(loss) or torch.isnan(loss_frame):
continue
scaler.step(optimizer)
scaler.update()
scheduler.step()
running_loss[0] += loss.item()
running_loss[1] += log_p.item()
running_loss[2] += log_det.item()
epoch_loss += loss.item()
if (batch_idx + 1) % log_interval == 0:
epoch_step = batch_idx + 1
running_loss[0] /= log_interval
running_loss[1] /= log_interval
running_loss[2] /= log_interval
avg_rn_loss = np.array(running_loss)
avg_time = (time.time() - timestemp) / log_interval
print('Global Step : {}, [{}, {}] [NLL, Log p(z), Log Det] : {}, STFT_loss: {}, avg time: {:0.4f}'
.format(global_step, epoch, epoch_step, avg_rn_loss, loss_frame.item(), avg_time))
state = {}
state['Global Step'] = global_step
state['Epoch'] = epoch
state['Epoch Step'] = epoch_step
state['NLL, Log p(z), Log Det'] = running_loss
state['avg time'] = avg_time
state['total time'] = time.time() - start_time
log_train.write('%s\n' % json.dumps(state))
log_train.flush()
timestemp = time.time()
running_loss = [0., 0., 0.]
if (batch_idx + 1) % synth_interval == 0:
with torch.no_grad():
synthesize(model, args.num_sample, args.sr)
model.train()
del x, c, log_p, log_det, loss
del running_loss
gc.collect()
print('{} Epoch Training Loss : {:.4f}'.format(epoch, epoch_loss / (len(train_loader))))
return epoch_loss / len(train_loader)
def evaluate(epoch, model, log_eval):
global global_step
global start_time
running_loss = [0., 0., 0.]
epoch_loss = 0.
timestemp = time.time()
model.eval()
for _, (x, c) in enumerate(test_loader):
with autocast():
x, c = x.to(device), c.to(device)
log_p, log_det = model(x, c)
loss = -(log_p + log_det)
if torch.isnan(loss):
continue
running_loss[0] += loss.item()
running_loss[1] += log_p.item()
running_loss[2] += log_det.item()
epoch_loss += loss.item()
del x, c, log_p, log_det, loss
running_loss[0] /= len(test_loader)
running_loss[1] /= len(test_loader)
running_loss[2] /= len(test_loader)
avg_rn_loss = np.array(running_loss)
avg_time = (time.time() - timestemp) / len(test_loader)
print('Global Step : {}, [{}, Eval] [NLL, Log p(z), Log Det] : {}, avg time: {:0.4f}'
.format(global_step, epoch, avg_rn_loss, avg_time))
state = {}
state['Global Step'] = global_step
state['Epoch'] = epoch
state['NLL, Log p(z), Log Det'] = running_loss
state['avg time'] = avg_time
state['total time'] = time.time() - start_time
log_eval.write('%s\n' % json.dumps(state))
log_eval.flush()
del running_loss
epoch_loss /= len(test_loader)
print('Evaluation Loss : {:.4f}'.format(epoch_loss))
return epoch_loss
def synthesize(model, num_sample, sr):
global global_step
model.eval()
for batch_idx, (x, c) in enumerate(synth_loader):
if batch_idx < num_sample:
x, c = x.to(device), c.to(device)
q_0 = Normal(x.new_zeros(x.size()), x.new_ones(x.size()))
z = q_0.sample()
timestemp = time.time()
with torch.no_grad():
y_gen = model.reverse(z, c).squeeze()
wav = y_gen.to(torch.device("cpu")).data.numpy()
wav_name = '{}/generate_{}_{}.wav'.format(
sample_path, global_step, batch_idx)
print('{} seconds'.format(time.time() - timestemp))
librosa.output.write_wav(wav_name, wav, sr=sr)
print('{} Saved!'.format(wav_name))
wav_orig = x.squeeze().to(torch.device("cpu")).data.numpy()
wav_orig_name = '{}/orig_{}.wav'.format(
sample_path, batch_idx)
librosa.output.write_wav(wav_orig_name, wav_orig, sr=sr)
del x, c, z, q_0, y_gen, wav
else:
break
def save_checkpoint(model, optimizer, scaler, scheduler, global_step, global_epoch):
checkpoint_path = os.path.join(
save_path, "checkpoint_step{:09d}.pth".format(global_step))
optimizer_state = optimizer.state_dict()
scaler_state = scaler.state_dict()
scheduler_state = scheduler.state_dict()
torch.save({"state_dict": model.state_dict(),
"optimizer": optimizer_state,
"scheduler": scheduler_state,
"scaler_state": scaler_state,
"global_step": global_step,
"global_epoch": global_epoch}, checkpoint_path)
def load_checkpoint(step, model, optimizer, scheduler):
checkpoint_path = os.path.join(
load_path, "checkpoint_step{:09d}.pth".format(step))
print("Load checkpoint from: {}".format(checkpoint_path))
checkpoint = torch.load(checkpoint_path)
# generalized load procedure for both single-gpu and DataParallel models
# https://discuss.pytorch.org/t/solved-keyerror-unexpected-key-module-encoder-embedding-weight-in-state-dict/1686/3
try:
model.load_state_dict(checkpoint["state_dict"])
except RuntimeError:
print("INFO: this model is trained with DataParallel. Creating new state_dict without module...")
state_dict = checkpoint["state_dict"]
from collections import OrderedDict
new_state_dict = OrderedDict()
for k, v in state_dict.items():
name = k[7:] # remove `module.`
new_state_dict[name] = v
model.load_state_dict(new_state_dict)
optimizer.load_state_dict(checkpoint["optimizer"])
scheduler.load_state_dict(checkpoint["scheduler"])
g_epoch = checkpoint["global_epoch"]
g_step = checkpoint["global_step"]
return model, optimizer, scheduler, g_epoch, g_step
if __name__ == "__main__":
global global_step
global start_time
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
args = parse_args()
sample_path, save_path, load_path, log_path = mkdir(args)
log, log_train, log_eval = get_logger(log_path, args.model_name)
train_loader, test_loader, synth_loader = load_dataset(args)
hps = Hyperparameters(args)
model = build_model(hps, log)
model.to(device)
optimizer = optim.Adam(model.parameters(), lr=args.lr)
scaler = GradScaler()
scheduler = optim.lr_scheduler.StepLR(optimizer, step_size=args.step_size, gamma=args.gamma)
state = {k: v for k, v in args._get_kwargs()}
if args.load_step == 0:
# new model
global_epoch = 0
global_step = 0
actnorm_init(train_loader, model, device)
else:
# saved model
model, optimizer, scheduler, global_epoch, global_step = load_checkpoint(args.load_step, model, optimizer, scheduler)
log.write('\n ! --- load the model and continue training --- ! \n')
log_train.write('\n ! --- load the model and continue training --- ! \n')
log_eval.write('\n ! --- load the model and continue training --- ! \n')
log.flush()
log_train.flush()
log_eval.flush()
start_time = time.time()
dateTime = datetime.datetime.fromtimestamp(start_time).strftime('%Y-%m-%d %H:%M:%S')
print('training starts at ', dateTime)
for epoch in range(global_epoch + 1, args.epochs + 1):
training_epoch_loss = train(epoch, model, optimizer, scaler, scheduler, log_train, args)
with torch.no_grad():
eval_epoch_loss = evaluate(epoch, model, log_eval)
state['training_loss'] = training_epoch_loss
state['eval_loss'] = eval_epoch_loss
state['epoch'] = epoch
log.write('%s\n' % json.dumps(state))
log.flush()
save_checkpoint(model, optimizer, scaler, scheduler, global_step, epoch)
print('Epoch {} Model Saved! Loss : {:.4f}'.format(epoch, eval_epoch_loss))
with torch.no_grad():
synthesize(model, args.num_sample, args.sr)
gc.collect()
log_train.close()
log_eval.close()
log.close()