forked from keithito/tacotron
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train.py
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train.py
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import argparse
from datetime import datetime
import math
import os
import subprocess
import time
import tensorflow as tf
import traceback
from datasets.datafeeder import DataFeeder
from hparams import hparams, hparams_debug_string
from models import create_model
from text import sequence_to_text
from util import audio, infolog, plot, ValueWindow
log = infolog.log
def get_git_commit():
subprocess.check_output(['git', 'diff-index', '--quiet', 'HEAD']) # Verify client is clean
commit = subprocess.check_output(['git', 'rev-parse', 'HEAD']).decode().strip()[:10]
log('Git commit: %s' % commit)
return commit
def add_stats(model):
with tf.variable_scope('stats') as scope:
tf.summary.histogram('linear_outputs', model.linear_outputs)
tf.summary.histogram('linear_targets', model.linear_targets)
tf.summary.histogram('mel_outputs', model.mel_outputs)
tf.summary.histogram('mel_targets', model.mel_targets)
tf.summary.scalar('loss_mel', model.mel_loss)
tf.summary.scalar('loss_linear', model.linear_loss)
tf.summary.scalar('learning_rate', model.learning_rate)
tf.summary.scalar('loss', model.loss)
gradient_norms = [tf.norm(grad) for grad in model.gradients]
tf.summary.histogram('gradient_norm', gradient_norms)
tf.summary.scalar('max_gradient_norm', tf.reduce_max(gradient_norms))
return tf.summary.merge_all()
def time_string():
return datetime.now().strftime('%Y-%m-%d %H:%M')
def train(log_dir, args):
commit = get_git_commit() if args.git else 'None'
checkpoint_path = os.path.join(log_dir, 'model.ckpt')
input_path = os.path.join(args.base_dir, args.input)
log('Checkpoint path: %s' % checkpoint_path)
log('Loading training data from: %s' % input_path)
log('Using model: %s' % args.model)
log(hparams_debug_string())
# Set up DataFeeder:
coord = tf.train.Coordinator()
with tf.variable_scope('datafeeder') as scope:
feeder = DataFeeder(coord, input_path, hparams)
# Set up model:
global_step = tf.Variable(0, name='global_step', trainable=False)
with tf.variable_scope('model') as scope:
model = create_model(args.model, hparams)
model.initialize(feeder.inputs, feeder.input_lengths, feeder.mel_targets, feeder.linear_targets)
model.add_loss()
model.add_optimizer(global_step)
stats = add_stats(model)
# Bookkeeping:
step = 0
time_window = ValueWindow(100)
loss_window = ValueWindow(100)
saver = tf.train.Saver(max_to_keep=5, keep_checkpoint_every_n_hours=2)
# Train!
with tf.Session() as sess:
try:
summary_writer = tf.summary.FileWriter(log_dir, sess.graph)
sess.run(tf.global_variables_initializer())
if args.restore_step:
# Restore from a checkpoint if the user requested it.
restore_path = '%s-%d' % (checkpoint_path, args.restore_step)
saver.restore(sess, restore_path)
log('Resuming from checkpoint: %s at commit: %s' % (restore_path, commit), slack=True)
else:
log('Starting new training run at commit: %s' % commit, slack=True)
feeder.start_in_session(sess)
while not coord.should_stop():
start_time = time.time()
step, loss, opt = sess.run([global_step, model.loss, model.optimize])
time_window.append(time.time() - start_time)
loss_window.append(loss)
message = 'Step %-7d [%.03f sec/step, loss=%.05f, avg_loss=%.05f]' % (
step, time_window.average, loss, loss_window.average)
log(message, slack=(step % args.checkpoint_interval == 0))
if loss > 100 or math.isnan(loss):
log('Loss exploded to %.05f at step %d!' % (loss, step), slack=True)
raise Exception('Loss Exploded')
if step % args.summary_interval == 0:
log('Writing summary at step: %d' % step)
summary_writer.add_summary(sess.run(stats), step)
if step % args.checkpoint_interval == 0:
log('Saving checkpoint to: %s-%d' % (checkpoint_path, step))
saver.save(sess, checkpoint_path, global_step=step)
log('Saving audio and alignment...')
input_seq, spectrogram, alignment = sess.run([
model.inputs[0], model.linear_outputs[0], model.alignments[0]])
waveform = audio.inv_spectrogram(spectrogram.T)
audio.save_wav(waveform, os.path.join(log_dir, 'step-%d-audio.wav' % step))
plot.plot_alignment(alignment, os.path.join(log_dir, 'step-%d-align.png' % step),
info='%s, %s, %s, step=%d, loss=%.5f' % (args.model, commit, time_string(), step, loss))
log('Input: %s' % sequence_to_text(input_seq))
except Exception as e:
log('Exiting due to exception: %s' % e, slack=True)
traceback.print_exc()
coord.request_stop(e)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--base_dir', default=os.path.expanduser('~/tacotron'))
parser.add_argument('--input', default='training/train.txt')
parser.add_argument('--model', default='tacotron')
parser.add_argument('--name', help='Name of the run. Used for logging. Defaults to model name.')
parser.add_argument('--hparams', default='',
help='Hyperparameter overrides as a comma-separated list of name=value pairs')
parser.add_argument('--restore_step', type=int, help='Global step to restore from checkpoint.')
parser.add_argument('--summary_interval', type=int, default=100,
help='Steps between running summary ops.')
parser.add_argument('--checkpoint_interval', type=int, default=1000,
help='Steps between writing checkpoints.')
parser.add_argument('--slack_url', help='Slack webhook URL to get periodic reports.')
parser.add_argument('--tf_log_level', type=int, default=1, help='Tensorflow C++ log level.')
parser.add_argument('--git', action='store_true', help='If set, verify that the client is clean.')
args = parser.parse_args()
os.environ['TF_CPP_MIN_LOG_LEVEL'] = str(args.tf_log_level)
run_name = args.name or args.model
log_dir = os.path.join(args.base_dir, 'logs-%s' % run_name)
os.makedirs(log_dir, exist_ok=True)
infolog.init(os.path.join(log_dir, 'train.log'), run_name, args.slack_url)
hparams.parse(args.hparams)
train(log_dir, args)
if __name__ == '__main__':
main()