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trainer.py
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trainer.py
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# See License in third_party/demo2program
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import time
from six.moves import xrange
import tensorflow as tf
import tensorflow.contrib.slim as slim
import numpy as np
import os
import sys
from third_party.demo2program.models.util import log
from model.model_ours import Model
class Trainer(object):
def __init__(self,
config,
dataset,
dataset_test):
self.config = config
hyper_parameter_str = 'bs_{}_lr_{}_{}_cell_{}'.format(
config.batch_size, config.learning_rate,
'lstm',
config.num_lstm_cell_units)
hyper_parameter_str += '_k_{}'.format(self.config.num_k)
self.train_dir = './train_dir/'+config.output
if not os.path.exists(self.train_dir): os.makedirs(self.train_dir)
log.infov("Train Dir: %s", self.train_dir)
# --- input ops ---
self.batch_size = config.batch_size
if config.dataset_type == 'karel':
from third_party.demo2program.karel_env.dsl import get_KarelDSL
self.dsl = get_KarelDSL(dsl_type='prob')
from third_party.demo2program.karel_env.input_ops_karel import create_input_ops
elif config.dataset_type == 'vizdoom':
from third_party.demo2program.vizdoom_env.dsl.vocab import VizDoomDSLVocab
self.dsl = VizDoomDSLVocab(
perception_type=dataset_test.perception_type,
level=dataset_test.level)
from third_party.demo2program.vizdoom_env.input_ops_vizdoom import create_input_ops
else:
raise ValueError(config.dataset)
_, self.batch_train = create_input_ops(dataset, self.batch_size,
is_training=True)
_, self.batch_test = create_input_ops(dataset_test, self.batch_size,
is_training=False)
# --- optimizer ---
self.global_step = tf.contrib.framework.get_or_create_global_step(
graph=None)
# --- create model ---
self.model = Model(config, debug_information=config.debug,
global_step=self.global_step)
self.learning_rate = config.learning_rate
self.check_op = tf.no_op()
# --- checkpoint and monitoring ---
all_vars = tf.trainable_variables()
log.warn("********* var ********** ")
slim.model_analyzer.analyze_vars(all_vars, print_info=True)
self.optimizer = tf.contrib.layers.optimize_loss(
loss=self.model.loss,
global_step=self.global_step,
learning_rate=self.learning_rate,
optimizer=tf.train.AdamOptimizer,
clip_gradients=20.0,
name='optimizer_pixel_loss'
)
self.train_summary_op = tf.summary.merge_all(key='train')
self.test_summary_op = tf.summary.merge_all(key='test')
self.saver = tf.train.Saver(max_to_keep=100)
self.pretrain_saver = tf.train.Saver(var_list=all_vars, max_to_keep=1)
self.summary_writer = tf.summary.FileWriter(self.train_dir)
self.log_step = self.config.log_step
self.test_sample_step = self.config.test_sample_step
self.write_summary_step = self.config.write_summary_step
self.checkpoint_secs = 600 # 10 min
self.supervisor = tf.train.Supervisor(
logdir=self.train_dir,
is_chief=True,
saver=None,
summary_op=None,
summary_writer=self.summary_writer,
save_summaries_secs=300,
save_model_secs=self.checkpoint_secs,
global_step=self.global_step,
)
session_config = tf.ConfigProto(
allow_soft_placement=True,
gpu_options=tf.GPUOptions(allow_growth=True),
device_count={'GPU': 1},
)
self.session = self.supervisor.prepare_or_wait_for_session(
config=session_config)
self.ckpt_path = config.checkpoint
if self.ckpt_path is not None:
log.info("Checkpoint path: %s", self.ckpt_path)
self.pretrain_saver.restore(self.session, self.ckpt_path)
log.info("Loaded the pretrain parameters from the provided" +
"checkpoint path")
def train(self):
log.infov("Training Starts!")
max_steps = self.config.max_steps
ckpt_save_step = 200
debug_step = 100
log_step = self.log_step
test_sample_step = self.test_sample_step
write_summary_step = self.write_summary_step
for s in xrange(max_steps):
step, train_summary, loss, output, step_time = \
self.run_single_step(
self.batch_train, step=s, is_train=True,debug_step=debug_step)
if s % log_step == 0:
self.log_step_message(step, loss, step_time)
if s % test_sample_step == 0:
test_step, test_summary, test_loss, output, test_step_time = \
self.run_test(self.batch_test)
self.summary_writer.add_summary(test_summary,
global_step=test_step)
self.log_step_message(step, test_loss, test_step_time, is_train=False)
if s % write_summary_step == 0:
self.summary_writer.add_summary(train_summary,
global_step=step)
if s % ckpt_save_step == 0:
log.infov("Saved checkpoint at %d", s)
self.saver.save(
self.session, os.path.join(self.train_dir, 'model'),
global_step=step)
def run_single_step(self, batch, step=None, is_train=True, debug_step=None):
_start_time = time.time()
batch_chunk = self.session.run(batch)
fetch = [self.global_step, self.train_summary_op, self.model.output,
self.model.loss, self.check_op, self.optimizer,
self.model.greedy_pred_action_list,
self.model.greedy_pred_per_list,
self.model.action_len]
feed_dict = self.model.get_feed_dict(
batch_chunk, step=step,
is_training=is_train,
)
fetch_values = self.session.run(fetch, feed_dict=feed_dict)
[step, summary, output, loss] = fetch_values[:4]
_end_time = time.time()
return step, summary, loss, output, (_end_time - _start_time)
def run_test(self, batch):
_start_time = time.time()
batch_chunk = self.session.run(batch)
feed_dict = self.model.get_feed_dict(
batch_chunk,
is_training=False,
)
step, summary, loss, output = self.session.run(
[self.global_step, self.test_summary_op, self.model.loss,
self.model.output],
feed_dict=feed_dict
)
_end_time = time.time()
return step, summary, loss, output, (_end_time - _start_time)
def log_step_message(self, step, loss, step_time, is_train=True):
if step_time == 0: step_time = 0.001
log_fn = (is_train and log.info or log.infov)
log_fn((" [{split_mode:5s} step {step:4d}] " +
"Loss: {loss:.5f} " +
"({sec_per_batch:.3f} sec/batch, {instance_per_sec:.3f} " +
"instances/sec) "
).format(split_mode=(is_train and 'train' or 'val'),
step=step,
loss=loss,
sec_per_batch=step_time,
instance_per_sec=self.batch_size / step_time
)
)
def main():
import argparse
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--debug', action='store_true', default=False,
help='set to True to see debugging visualization')
parser.add_argument('--output', type=str, default='default',
help='log folder for training')
parser.add_argument('--dataset_type', type=str, default='karel',
choices=['karel', 'vizdoom'])
parser.add_argument('--dataset_path', type=str,
default='datasets/karel_dataset',
help='the path to your dataset')
parser.add_argument('--checkpoint', type=str, default=None,
help='specify the path to a pre-trained checkpoint')
# log
parser.add_argument('--log_step', type=int, default=100,
help='the frequency of outputing log info')
parser.add_argument('--write_summary_step', type=int, default=100,
help=' the frequency of writing TensorBoard sumamries')
parser.add_argument('--test_sample_step', type=int, default=100,
help='the frequency of performing '
'testing inference during training')
# hyperparameters
parser.add_argument('--num_k', type=int, default=10,
help='the number of seen demonstrations')
parser.add_argument('--batch_size', type=int, default=32)
parser.add_argument('--learning_rate', type=float, default=0.001)
parser.add_argument('--max_steps', type=int, default=10000)
# model hyperparameters
parser.add_argument('--num_lstm_cell_units', type=int, default=512)
config = parser.parse_args()
if config.dataset_type == 'karel':
import third_party.modified.karel_env.dataset_karel as dataset
dataset_train, dataset_test, dataset_val \
= dataset.create_default_splits(config.dataset_path, num_k=config.num_k)
elif config.dataset_type == 'vizdoom':
import third_party.modified.vizdoom_env.dataset_vizdoom as dataset
dataset_train, dataset_test, dataset_val \
= dataset.create_default_splits(config.dataset_path, num_k=config.num_k)
else:
raise ValueError(config.dataset)
data_tuple = dataset_train.get_data(dataset_train.ids[0])
program, _, s_h, test_s_h, a_h, _, _, _, program_len, demo_len, test_demo_len, \
per, test_per = data_tuple[:13]
config.dim_program_token = np.asarray(program.shape)[0]
config.max_program_len = np.asarray(program.shape)[1]
config.k = np.asarray(s_h.shape)[0]
config.test_k = np.asarray(test_s_h.shape)[0]
config.max_demo_len = np.asarray(s_h.shape)[1]
config.h = np.asarray(s_h.shape)[2]
config.w = np.asarray(s_h.shape)[3]
config.depth = np.asarray(s_h.shape)[4]
config.action_space = np.asarray(a_h.shape)[2]
config.per_dim = np.asarray(per.shape)[2]
if config.dataset_type == 'karel':
config.dsl_type = dataset_train.dsl_type
config.env_type = dataset_train.env_type
config.vizdoom_pos_keys = []
config.vizdoom_max_init_pos_len = -1
config.perception_type = ''
config.level = None
elif config.dataset_type == 'vizdoom':
config.dsl_type = 'vizdoom_default' # vizdoom has 1 dsl type for now
config.env_type = 'vizdoom_default' # vizdoom has 1 env type
config.vizdoom_pos_keys = dataset_train.vizdoom_pos_keys
config.vizdoom_max_init_pos_len = dataset_train.vizdoom_max_init_pos_len
config.perception_type = dataset_train.perception_type
config.level = dataset_train.level
trainer = Trainer(config, dataset_train, dataset_test)
log.warning("dataset: %s, learning_rate: %f",
config.dataset_path, config.learning_rate)
trainer.train()
if __name__ == '__main__':
main()