def save_best_model_test(self):
# create a dummy model
model = Prenet(256, out_features=[256, 256])
model = T.nn.DataParallel(layer)
# save the model
save_best_model(model, None, 0, 100, OUT_PATH, 10, 1)
# load the model to CPU
model_dict = T.load(MODEL_PATH,
map_location=lambda storage, loc: storage)
model.load_state_dict(model_dict['model'])
def main(args): #pylint: disable=redefined-outer-name
# Audio processor
ap = AudioProcessor(**c.audio)
# DISTRUBUTED
if num_gpus > 1:
init_distributed(args.rank, num_gpus, args.group_id,
c.distributed["backend"], c.distributed["url"])
num_chars = len(phonemes) if c.use_phonemes else len(symbols)
if c.use_speaker_embedding:
speakers = get_speakers(c.data_path, c.meta_file_train, c.dataset)
if args.restore_path:
prev_out_path = os.path.dirname(args.restore_path)
speaker_mapping = load_speaker_mapping(prev_out_path)
assert all([speaker in speaker_mapping
for speaker in speakers]), "As of now you, you cannot " \
"introduce new speakers to " \
"a previously trained model."
else:
speaker_mapping = {name: i for i, name in enumerate(speakers)}
save_speaker_mapping(OUT_PATH, speaker_mapping)
num_speakers = len(speaker_mapping)
print("Training with {} speakers: {}".format(num_speakers,
", ".join(speakers)))
else:
num_speakers = 0
model = setup_model(num_chars, num_speakers, c)
print(" | > Num output units : {}".format(ap.num_freq), flush=True)
optimizer = RAdam(model.parameters(), lr=c.lr, weight_decay=0)
if c.stopnet and c.separate_stopnet:
optimizer_st = RAdam(model.decoder.stopnet.parameters(),
lr=c.lr,
weight_decay=0)
else:
optimizer_st = None
if c.loss_masking:
criterion = L1LossMasked() if c.model in ["Tacotron", "TacotronGST"
] else MSELossMasked()
else:
criterion = nn.L1Loss() if c.model in ["Tacotron", "TacotronGST"
] else nn.MSELoss()
criterion_st = nn.BCEWithLogitsLoss() if c.stopnet else None
if args.restore_path:
checkpoint = torch.load(args.restore_path)
try:
# TODO: fix optimizer init, model.cuda() needs to be called before
# optimizer restore
# optimizer.load_state_dict(checkpoint['optimizer'])
if c.reinit_layers:
raise RuntimeError
model.load_state_dict(checkpoint['model'])
except:
print(" > Partial model initialization.")
model_dict = model.state_dict()
model_dict = set_init_dict(model_dict, checkpoint, c)
model.load_state_dict(model_dict)
del model_dict
for group in optimizer.param_groups:
group['lr'] = c.lr
print(" > Model restored from step %d" % checkpoint['step'],
flush=True)
args.restore_step = checkpoint['step']
else:
args.restore_step = 0
if use_cuda:
model = model.cuda()
criterion.cuda()
if criterion_st:
criterion_st.cuda()
# DISTRUBUTED
if num_gpus > 1:
model = apply_gradient_allreduce(model)
if c.lr_decay:
scheduler = NoamLR(optimizer,
warmup_steps=c.warmup_steps,
last_epoch=args.restore_step - 1)
else:
scheduler = None
num_params = count_parameters(model)
print("\n > Model has {} parameters".format(num_params), flush=True)
if 'best_loss' not in locals():
best_loss = float('inf')
global_step = args.restore_step
for epoch in range(0, c.epochs):
# set gradual training
if c.gradual_training is not None:
r, c.batch_size = gradual_training_scheduler(global_step, c)
c.r = r
model.decoder.set_r(r)
print(" > Number of outputs per iteration:", model.decoder.r)
train_loss, global_step = train(model, criterion, criterion_st,
optimizer, optimizer_st, scheduler, ap,
global_step, epoch)
val_loss = evaluate(model, criterion, criterion_st, ap, global_step,
epoch)
print(" | > Training Loss: {:.5f} Validation Loss: {:.5f}".format(
train_loss, val_loss),
flush=True)
target_loss = train_loss
if c.run_eval:
target_loss = val_loss
best_loss = save_best_model(model, optimizer, target_loss, best_loss,
OUT_PATH, global_step, epoch)