def main():
if not opt.multi_dataset:
if opt.data_format in ['bin', 'raw']:
start = time.time()
if opt.data.endswith(".train.pt"):
print("Loading data from '%s'" % opt.data)
dataset = torch.load(opt.data)
else:
print("Loading data from %s" % opt.data + ".train.pt")
dataset = torch.load(opt.data + ".train.pt")
elapse = str(datetime.timedelta(seconds=int(time.time() - start)))
print("Done after %s" % elapse)
dicts = dataset['dicts']
# For backward compatibility
train_dict = defaultdict(lambda: None, dataset['train'])
valid_dict = defaultdict(lambda: None, dataset['valid'])
if train_dict['src_lang'] is not None:
assert 'langs' in dicts
train_src_langs = train_dict['src_lang']
train_tgt_langs = train_dict['tgt_lang']
else:
# allocate new languages
dicts['langs'] = {'src': 0, 'tgt': 1}
train_src_langs = list()
train_tgt_langs = list()
# Allocation one for the bilingual case
train_src_langs.append(torch.Tensor([dicts['langs']['src']]))
train_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if not opt.streaming:
train_data = onmt.Dataset(
numpy_to_torch(train_dict['src']),
numpy_to_torch(train_dict['tgt']),
train_dict['src_sizes'],
train_dict['tgt_sizes'],
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
augment=opt.augment_speech,
upsampling=opt.upsampling,
num_split=len(opt.gpus))
else:
train_data = onmt.StreamDataset(
train_dict['src'],
train_dict['tgt'],
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
augment=opt.augment_speech,
upsampling=opt.upsampling)
if valid_dict['src_lang'] is not None:
assert 'langs' in dicts
valid_src_langs = valid_dict['src_lang']
valid_tgt_langs = valid_dict['tgt_lang']
else:
# allocate new languages
valid_src_langs = list()
valid_tgt_langs = list()
# Allocation one for the bilingual case
valid_src_langs.append(torch.Tensor([dicts['langs']['src']]))
valid_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if not opt.streaming:
valid_data = onmt.Dataset(
numpy_to_torch(valid_dict['src']),
numpy_to_torch(valid_dict['tgt']),
valid_dict['src_sizes'],
valid_dict['tgt_sizes'],
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
upsampling=opt.upsampling,
num_split=len(opt.gpus))
else:
valid_data = onmt.StreamDataset(
numpy_to_torch(valid_dict['src']),
numpy_to_torch(valid_dict['tgt']),
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
upsampling=opt.upsampling)
print(' * number of training sentences. %d' %
len(dataset['train']['src']))
print(' * maximum batch size (words per batch). %d' %
opt.batch_size_words)
elif opt.data_format in ['scp', 'scpmem', 'mmem']:
print("Loading memory mapped data files ....")
start = time.time()
from onmt.data.mmap_indexed_dataset import MMapIndexedDataset
from onmt.data.scp_dataset import SCPIndexDataset
dicts = torch.load(opt.data + ".dict.pt")
if opt.data_format in ['scp', 'scpmem']:
audio_data = torch.load(opt.data + ".scp_path.pt")
# allocate languages if not
if 'langs' not in dicts:
dicts['langs'] = {'src': 0, 'tgt': 1}
else:
print(dicts['langs'])
train_path = opt.data + '.train'
if opt.data_format in ['scp', 'scpmem']:
train_src = SCPIndexDataset(audio_data['train'],
concat=opt.concat)
else:
train_src = MMapIndexedDataset(train_path + '.src')
train_tgt = MMapIndexedDataset(train_path + '.tgt')
# check the lang files if they exist (in the case of multi-lingual models)
if os.path.exists(train_path + '.src_lang.bin'):
assert 'langs' in dicts
train_src_langs = MMapIndexedDataset(train_path + '.src_lang')
train_tgt_langs = MMapIndexedDataset(train_path + '.tgt_lang')
else:
train_src_langs = list()
train_tgt_langs = list()
# Allocate a Tensor(1) for the bilingual case
train_src_langs.append(torch.Tensor([dicts['langs']['src']]))
train_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
# check the length files if they exist
if os.path.exists(train_path + '.src_sizes.npy'):
train_src_sizes = np.load(train_path + '.src_sizes.npy')
train_tgt_sizes = np.load(train_path + '.tgt_sizes.npy')
else:
train_src_sizes, train_tgt_sizes = None, None
if opt.encoder_type == 'audio':
data_type = 'audio'
else:
data_type = 'text'
if not opt.streaming:
train_data = onmt.Dataset(
train_src,
train_tgt,
train_src_sizes,
train_tgt_sizes,
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
src_align_right=opt.src_align_right,
augment=opt.augment_speech,
upsampling=opt.upsampling,
cleaning=True,
verbose=True,
num_split=len(opt.gpus))
else:
train_data = onmt.StreamDataset(
train_src,
train_tgt,
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=False,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
upsampling=opt.upsampling)
valid_path = opt.data + '.valid'
if opt.data_format in ['scp', 'scpmem']:
valid_src = SCPIndexDataset(audio_data['valid'],
concat=opt.concat)
else:
valid_src = MMapIndexedDataset(valid_path + '.src')
valid_tgt = MMapIndexedDataset(valid_path + '.tgt')
if os.path.exists(valid_path + '.src_lang.bin'):
assert 'langs' in dicts
valid_src_langs = MMapIndexedDataset(valid_path + '.src_lang')
valid_tgt_langs = MMapIndexedDataset(valid_path + '.tgt_lang')
else:
valid_src_langs = list()
valid_tgt_langs = list()
# Allocation one for the bilingual case
valid_src_langs.append(torch.Tensor([dicts['langs']['src']]))
valid_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
# check the length files if they exist
if os.path.exists(valid_path + '.src_sizes.npy'):
valid_src_sizes = np.load(valid_path + '.src_sizes.npy')
valid_tgt_sizes = np.load(valid_path + '.tgt_sizes.npy')
else:
valid_src_sizes, valid_tgt_sizes = None, None
if not opt.streaming:
valid_data = onmt.Dataset(
valid_src,
valid_tgt,
valid_src_sizes,
valid_tgt_sizes,
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents,
src_align_right=opt.src_align_right,
cleaning=True,
verbose=True,
debug=True,
num_split=len(opt.gpus))
else:
# for validation data, we have to go through sentences (very slow but to ensure correctness)
valid_data = onmt.StreamDataset(
valid_src,
valid_tgt,
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents)
elapse = str(datetime.timedelta(seconds=int(time.time() - start)))
print("Done after %s" % elapse)
else:
raise NotImplementedError
print(' * number of sentences in training data: %d' %
train_data.size())
print(' * number of sentences in validation data: %d' %
valid_data.size())
else:
print("[INFO] Reading multiple dataset ...")
# raise NotImplementedError
dicts = torch.load(opt.data + ".dict.pt")
root_dir = os.path.dirname(opt.data)
print("Loading training data ...")
train_dirs, valid_dirs = dict(), dict()
# scan the data directory to find the training data
for dir_ in os.listdir(root_dir):
if os.path.isdir(os.path.join(root_dir, dir_)):
if str(dir_).startswith("train"):
idx = int(dir_.split(".")[1])
train_dirs[idx] = dir_
if dir_.startswith("valid"):
idx = int(dir_.split(".")[1])
valid_dirs[idx] = dir_
train_sets, valid_sets = list(), list()
for (idx_, dir_) in sorted(train_dirs.items()):
data_dir = os.path.join(root_dir, dir_)
print("[INFO] Loading training data %i from %s" % (idx_, dir_))
if opt.data_format in ['bin', 'raw']:
raise NotImplementedError
elif opt.data_format in ['scp', 'scpmem', 'mmem']:
from onmt.data.mmap_indexed_dataset import MMapIndexedDataset
from onmt.data.scp_dataset import SCPIndexDataset
if opt.data_format in ['scp', 'scpmem']:
audio_data = torch.load(
os.path.join(data_dir, "data.scp_path.pt"))
src_data = SCPIndexDataset(audio_data, concat=opt.concat)
else:
src_data = MMapIndexedDataset(
os.path.join(data_dir, "data.src"))
tgt_data = MMapIndexedDataset(
os.path.join(data_dir, "data.tgt"))
src_lang_data = MMapIndexedDataset(
os.path.join(data_dir, 'data.src_lang'))
tgt_lang_data = MMapIndexedDataset(
os.path.join(data_dir, 'data.tgt_lang'))
if os.path.exists(os.path.join(data_dir,
'data.src_sizes.npy')):
src_sizes = np.load(
os.path.join(data_dir, 'data.src_sizes.npy'))
tgt_sizes = np.load(
os.path.join(data_dir, 'data.tgt_sizes.npy'))
else:
src_sizes, sizes = None, None
if opt.encoder_type == 'audio':
data_type = 'audio'
else:
data_type = 'text'
if not opt.streaming:
train_data = onmt.Dataset(
src_data,
tgt_data,
src_sizes,
tgt_sizes,
src_lang_data,
tgt_lang_data,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
src_align_right=opt.src_align_right,
augment=opt.augment_speech,
upsampling=opt.upsampling,
cleaning=True,
verbose=True,
num_split=len(opt.gpus))
train_sets.append(train_data)
else:
print("Multi-dataset not implemented for Streaming tasks.")
raise NotImplementedError
for (idx_, dir_) in sorted(valid_dirs.items()):
data_dir = os.path.join(root_dir, dir_)
print("[INFO] Loading validation data %i from %s" % (idx_, dir_))
if opt.data_format in ['bin', 'raw']:
raise NotImplementedError
elif opt.data_format in ['scp', 'scpmem', 'mmem']:
if opt.data_format in ['scp', 'scpmem']:
audio_data = torch.load(
os.path.join(data_dir, "data.scp_path.pt"))
src_data = SCPIndexDataset(audio_data, concat=opt.concat)
else:
src_data = MMapIndexedDataset(
os.path.join(data_dir, "data.src"))
tgt_data = MMapIndexedDataset(
os.path.join(data_dir, "data.tgt"))
src_lang_data = MMapIndexedDataset(
os.path.join(data_dir, 'data.src_lang'))
tgt_lang_data = MMapIndexedDataset(
os.path.join(data_dir, 'data.tgt_lang'))
if os.path.exists(os.path.join(data_dir,
'data.src_sizes.npy')):
src_sizes = np.load(
os.path.join(data_dir, 'data.src_sizes.npy'))
tgt_sizes = np.load(
os.path.join(data_dir, 'data.tgt_sizes.npy'))
else:
src_sizes, sizes = None, None
if opt.encoder_type == 'audio':
data_type = 'audio'
else:
data_type = 'text'
if not opt.streaming:
valid_data = onmt.Dataset(
src_data,
tgt_data,
src_sizes,
tgt_sizes,
src_lang_data,
tgt_lang_data,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents,
src_align_right=opt.src_align_right,
cleaning=True,
verbose=True,
debug=True,
num_split=len(opt.gpus))
valid_sets.append(valid_data)
else:
raise NotImplementedError
train_data = train_sets
valid_data = valid_sets
if opt.load_from:
checkpoint = torch.load(opt.load_from,
map_location=lambda storage, loc: storage)
print("* Loading dictionaries from the checkpoint")
dicts = checkpoint['dicts']
else:
dicts['tgt'].patch(opt.patch_vocab_multiplier)
checkpoint = None
# Put the vocab mask from dicts to the datasets
for data in [train_data, valid_data]:
if isinstance(data, list):
for i, data_ in enumerate(data):
data_.set_mask(dicts['tgt'].vocab_mask)
data[i] = data_
else:
data.set_mask(dicts['tgt'].vocab_mask)
if "src" in dicts:
print(' * vocabulary size. source = %d; target = %d' %
(dicts['src'].size(), dicts['tgt'].size()))
else:
print('[INFO] vocabulary size. target = %d' % (dicts['tgt'].size()))
print('* Building model...')
if not opt.fusion:
if opt.bayes_by_backprop:
model = build_bayesian_model(opt, dicts)
else:
model = build_model(opt, dicts)
""" Building the loss function """
# if opt.ctc_loss != 0:
# pass
# loss_function = NMTAndCTCLossFunc(dicts['tgt'].size(),
# label_smoothing=opt.label_smoothing,
# ctc_weight=opt.ctc_loss)
if opt.nce:
from onmt.modules.nce.nce_loss import NCELoss
loss_function = NCELoss(opt.model_size,
dicts['tgt'].size(),
noise_ratio=opt.nce_noise,
logz=9,
label_smoothing=opt.label_smoothing)
else:
loss_function = NMTLossFunc(opt.model_size,
dicts['tgt'].size(),
label_smoothing=opt.label_smoothing,
mirror=opt.mirror_loss,
fast_xentropy=opt.fast_xentropy)
# This function replaces modules with the more optimized counterparts so that it can run faster
# Currently exp with LayerNorm
if not opt.memory_profiling:
optimize_model(model, fp16=opt.fp16)
else:
from onmt.model_factory import build_fusion
from onmt.modules.loss import FusionLoss
model = build_fusion(opt, dicts)
loss_function = FusionLoss(dicts['tgt'].size(),
label_smoothing=opt.label_smoothing)
n_params = sum([p.nelement() for p in model.parameters()])
print('* number of parameters: %d' % n_params)
if not opt.debugging and len(opt.gpus) == 1:
if opt.bayes_by_backprop:
from onmt.train_utils.bayes_by_backprop_trainer import BayesianTrainer
trainer = BayesianTrainer(model, loss_function, train_data,
valid_data, dicts, opt)
else:
trainer = XETrainer(model, loss_function, train_data, valid_data,
dicts, opt)
else:
from onmt.train_utils.new_trainer import Trainer
trainer = Trainer(model, loss_function, train_data, valid_data, dicts,
opt)
trainer.run(checkpoint=checkpoint)
def main():
if opt.data_format in ['bin', 'raw']:
start = time.time()
if opt.data.endswith(".train.pt"):
print("Loading data from '%s'" % opt.data)
dataset = torch.load(opt.data)
else:
print("Loading data from %s" % opt.data + ".train.pt")
dataset = torch.load(opt.data + ".train.pt")
elapse = str(datetime.timedelta(seconds=int(time.time() - start)))
print("Done after %s" % elapse)
dicts = dataset['dicts']
# For backward compatibility
train_dict = defaultdict(lambda: None, dataset['train'])
valid_dict = defaultdict(lambda: None, dataset['valid'])
if train_dict['src_lang'] is not None:
assert 'langs' in dicts
train_src_langs = train_dict['src_lang']
train_tgt_langs = train_dict['tgt_lang']
else:
# allocate new languages
dicts['langs'] = {'src': 0, 'tgt': 1}
train_src_langs = list()
train_tgt_langs = list()
# Allocation one for the bilingual case
train_src_langs.append(torch.Tensor([dicts['langs']['src']]))
train_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if not opt.streaming:
train_data = onmt.Dataset(train_dict['src'],
train_dict['tgt'],
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
augment=opt.augment_speech,
upsampling=opt.upsampling)
else:
train_data = onmt.StreamDataset(
train_dict['src'],
train_dict['tgt'],
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
augment=opt.augment_speech,
upsampling=opt.upsampling)
if valid_dict['src_lang'] is not None:
assert 'langs' in dicts
valid_src_langs = valid_dict['src_lang']
valid_tgt_langs = valid_dict['tgt_lang']
else:
# allocate new languages
valid_src_langs = list()
valid_tgt_langs = list()
# Allocation one for the bilingual case
valid_src_langs.append(torch.Tensor([dicts['langs']['src']]))
valid_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if not opt.streaming:
valid_data = onmt.Dataset(valid_dict['src'],
valid_dict['tgt'],
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
upsampling=opt.upsampling)
else:
valid_data = onmt.StreamDataset(
valid_dict['src'],
valid_dict['tgt'],
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=dataset.get("type", "text"),
sorting=True,
batch_size_sents=opt.batch_size_sents,
upsampling=opt.upsampling)
print(' * number of training sentences. %d' %
len(dataset['train']['src']))
print(' * maximum batch size (words per batch). %d' %
opt.batch_size_words)
elif opt.data_format == 'mmem':
print("Loading memory mapped data files ....")
start = time.time()
from onmt.data.mmap_indexed_dataset import MMapIndexedDataset
dicts = torch.load(opt.data + ".dict.pt")
# allocate languages if not
if 'langs' not in dicts:
dicts['langs'] = {'src': 0, 'tgt': 1}
else:
print(dicts['langs'])
train_path = opt.data + '.train'
train_src = MMapIndexedDataset(train_path + '.src')
train_tgt = MMapIndexedDataset(train_path + '.tgt')
# check the lang files if they exist (in the case of multi-lingual models)
if os.path.exists(train_path + '.src_lang.bin'):
assert 'langs' in dicts
train_src_langs = MMapIndexedDataset(train_path + '.src_lang')
train_tgt_langs = MMapIndexedDataset(train_path + '.tgt_lang')
else:
train_src_langs = list()
train_tgt_langs = list()
# Allocate a Tensor(1) for the bilingual case
train_src_langs.append(torch.Tensor([dicts['langs']['src']]))
train_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if opt.encoder_type == 'audio':
data_type = 'audio'
else:
data_type = 'text'
if not opt.streaming:
train_data = onmt.Dataset(train_src,
train_tgt,
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=True,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
src_align_right=opt.src_align_right,
upsampling=opt.upsampling,
cleaning=True,
verbose=True)
else:
train_data = onmt.StreamDataset(
train_src,
train_tgt,
train_src_langs,
train_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type=data_type,
sorting=False,
batch_size_sents=opt.batch_size_sents,
multiplier=opt.batch_size_multiplier,
upsampling=opt.upsampling)
valid_path = opt.data + '.valid'
valid_src = MMapIndexedDataset(valid_path + '.src')
valid_tgt = MMapIndexedDataset(valid_path + '.tgt')
if os.path.exists(valid_path + '.src_lang.bin'):
assert 'langs' in dicts
valid_src_langs = MMapIndexedDataset(valid_path + '.src_lang')
valid_tgt_langs = MMapIndexedDataset(valid_path + '.tgt_lang')
else:
valid_src_langs = list()
valid_tgt_langs = list()
# Allocation one for the bilingual case
valid_src_langs.append(torch.Tensor([dicts['langs']['src']]))
valid_tgt_langs.append(torch.Tensor([dicts['langs']['tgt']]))
if not opt.streaming:
valid_data = onmt.Dataset(valid_src,
valid_tgt,
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type="text",
sorting=False,
batch_size_sents=opt.batch_size_sents,
src_align_right=opt.src_align_right,
cleaning=True,
verbose=True)
else:
# for validation data, we have to go through sentences (very slow but to ensure correctness)
valid_data = onmt.StreamDataset(
valid_src,
valid_tgt,
valid_src_langs,
valid_tgt_langs,
batch_size_words=opt.batch_size_words,
data_type="text",
sorting=True,
batch_size_sents=opt.batch_size_sents)
elapse = str(datetime.timedelta(seconds=int(time.time() - start)))
print("Done after %s" % elapse)
else:
raise NotImplementedError
# additional_data = []
# if opt.additional_data != "none":
# add_data = opt.additional_data.split(";")
# add_format = opt.additional_data_format.split(";")
# assert (len(add_data) == len(add_format))
# for i in range(len(add_data)):
# if add_format[i] == 'raw':
# if add_data[i].endswith(".train.pt"):
# print("Loading data from '%s'" % opt.data)
# add_dataset = torch.load(add_data[i])
# else:
# print("Loading data from %s" % opt.data + ".train.pt")
# add_dataset = torch.load(add_data[i] + ".train.pt")
#
# additional_data.append(onmt.Dataset(add_dataset['train']['src'],
# dataset['train']['tgt'], batch_size_words=opt.batch_size_words,
# data_type=dataset.get("type", "text"), sorting=True,
# batch_size_sents=opt.batch_size_sents,
# multiplier=opt.batch_size_multiplier,
# reshape_speech=opt.reshape_speech,
# augment=opt.augment_speech))
# elif add_format[i] == 'bin':
#
# from onmt.data.indexed_dataset import IndexedInMemoryDataset
#
# train_path = add_data[i] + '.train'
# train_src = IndexedInMemoryDataset(train_path + '.src')
# train_tgt = IndexedInMemoryDataset(train_path + '.tgt')
#
# additional_data.append(onmt.Dataset(train_src,
# train_tgt,
# batch_size_words=opt.batch_size_words,
# data_type=opt.encoder_type,
# batch_size_sents=opt.batch_size_sents,
# multiplier=opt.batch_size_multiplier))
if opt.load_from:
checkpoint = torch.load(opt.load_from,
map_location=lambda storage, loc: storage)
print("* Loading dictionaries from the checkpoint")
dicts = checkpoint['dicts']
else:
dicts['tgt'].patch(opt.patch_vocab_multiplier)
checkpoint = None
if "src" in dicts:
print(' * vocabulary size. source = %d; target = %d' %
(dicts['src'].size(), dicts['tgt'].size()))
else:
print(' * vocabulary size. target = %d' % (dicts['tgt'].size()))
print(' * number of sentences in training data: %d' % train_data.size())
print(' * number of sentences in validation data: %d' % valid_data.size())
print('* Building model...')
if not opt.fusion:
model = build_model(opt, dicts)
""" Building the loss function """
if opt.ctc_loss != 0:
loss_function = NMTAndCTCLossFunc(
dicts['tgt'].size(),
label_smoothing=opt.label_smoothing,
ctc_weight=opt.ctc_loss)
else:
loss_function = NMTLossFunc(opt.model_size,
dicts['tgt'].size(),
label_smoothing=opt.label_smoothing,
mirror=opt.mirror_loss)
# This function replaces modules with the more optimized counterparts so that it can run faster
# Currently exp with LayerNorm
optimize_model(model)
else:
from onmt.model_factory import build_fusion
from onmt.modules.loss import FusionLoss
model = build_fusion(opt, dicts)
loss_function = FusionLoss(dicts['tgt'].size(),
label_smoothing=opt.label_smoothing)
n_params = sum([p.nelement() for p in model.parameters()])
print('* number of parameters: %d' % n_params)
if len(opt.gpus) > 1 or opt.virtual_gpu > 1:
raise NotImplementedError(
"Multi-GPU training is not supported at the moment.")
else:
trainer = XETrainer(model, loss_function, train_data, valid_data,
dicts, opt)
trainer.run(checkpoint=checkpoint)