def upload_model(self, checkpoint_dir):
try:
s3_client = self.get_client()
num_files = 0
for root, _, files in os.walk("./" + checkpoint_dir):
for filename in files:
abs_name = os.path.abspath(os.path.join(root, filename))
s3_client.upload_file(
abs_name, self.bucket, "%s/%s/%s" %
(self.s3_prefix, checkpoint_dir, filename))
num_files += 1
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Model failed to upload to {}, {}".format(
self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Model failed to upload to {}, {}".format(self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def write_ip_config(self, ip):
try:
s3_client = self.get_client()
data = {"IP": ip}
json_blob = json.dumps(data)
file_handle = io.BytesIO(json_blob.encode())
file_handle_done = io.BytesIO(b'done')
s3_client.upload_fileobj(file_handle, self.bucket, self.config_key)
s3_client.upload_fileobj(file_handle_done, self.bucket,
self.done_file_key)
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Write ip config failed to upload to {}, {}".format(
self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Write ip config failed to upload to {}, {}".format(
self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def wait_for_checkpoint(checkpoint_dir, data_store=None, timeout=10):
"""
block until there is a checkpoint in checkpoint_dir
"""
for i in range(timeout):
if data_store:
data_store.load_from_store()
if has_checkpoint(checkpoint_dir):
return
time.sleep(10)
# one last time
if has_checkpoint(checkpoint_dir):
return
utils.json_format_logger(
"checkpoint never found in {}, Waited {} seconds. Job failed!".format(
checkpoint_dir, timeout),
**utils.build_system_error_dict(
utils.SIMAPP_SIMULATION_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_503))
traceback.print_exc()
raise ValueError(
('Waited {timeout} seconds, but checkpoint never found in '
'{checkpoint_dir}').format(
timeout=timeout,
checkpoint_dir=checkpoint_dir,
))
def download_file(self, s3_key, local_path):
s3_client = self.get_client()
try:
s3_client.download_file(self.bucket, s3_key, local_path)
return True
except botocore.exceptions.ClientError as e:
# It is possible that the file isn't there in which case we should return fasle and let the client decide the next action
if e.response['Error']['Code'] == "404":
return False
else:
utils.json_format_logger(
"Unable to download {} from {}: {}".format(
s3_key, self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Unable to download {} from {}: {}".format(
s3_key, self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def store_ip(self, ip_address):
try:
s3_client = self._get_client()
ip_data = {IP_KEY: ip_address}
ip_data_json_blob = json.dumps(ip_data)
ip_data_file_object = io.BytesIO(ip_data_json_blob.encode())
ip_done_file_object = io.BytesIO(b'done')
s3_client.upload_fileobj(ip_data_file_object, self.params.bucket,
self.ip_data_key)
s3_client.upload_fileobj(ip_done_file_object, self.params.bucket,
self.ip_done_key)
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Unable to store ip to {}, {}".format(
self.params.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Unable to store ip to {}, {}".format(self.params.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def download_preset_if_present(self, local_path):
try:
s3_client = self._get_client()
response = s3_client.list_objects(Bucket=self.params.bucket,
Prefix=self.preset_data_key)
# If we don't find a preset, return false
if "Contents" not in response:
return False
success = s3_client.download_file(Bucket=self.params.bucket,
Key=self.preset_data_key,
Filename=local_path)
return success
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Unable to download presets from {}, {}".format(
self.params.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Unable to download presets from {}, {}".format(
self.params.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def download_file(self, s3_key, local_path):
s3_client = self.get_client()
try:
s3_client.download_file(self.bucket, s3_key, local_path)
return True
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == "404":
logger.info(
"Exception [{}] occured on download file-{} from s3 bucket-{} key-{}"
.format(e.response['Error'], local_path, self.bucket,
s3_key))
return False
else:
utils.json_format_logger(
"boto client exception error [{}] occured on download file-{} from s3 bucket-{} key-{}"
.format(e.response['Error'], local_path, self.bucket,
s3_key),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_401))
return False
except Exception as e:
utils.json_format_logger(
"Exception [{}] occcured on download file-{} from s3 bucket-{} key-{}"
.format(e, local_path, self.bucket, s3_key),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_401))
return False
def get_latest_checkpoint(self):
try:
filename = os.path.abspath(os.path.join(self.params.checkpoint_dir, "latest_ckpt"))
if not os.path.exists(self.params.checkpoint_dir):
os.makedirs(self.params.checkpoint_dir)
while True:
s3_client = self._get_client()
state_file = CheckpointStateFile(os.path.abspath(self.params.checkpoint_dir))
# wait until lock is removed
response = s3_client.list_objects_v2(Bucket=self.params.bucket,
Prefix=self._get_s3_key(SyncFiles.LOCKFILE.value))
if "Contents" not in response:
try:
# fetch checkpoint state file from S3
s3_client.download_file(Bucket=self.params.bucket,
Key=self._get_s3_key(state_file.filename),
Filename=filename)
except Exception as e:
time.sleep(SLEEP_TIME_WHILE_WAITING_FOR_DATA_FROM_TRAINER_IN_SECOND)
continue
else:
time.sleep(SLEEP_TIME_WHILE_WAITING_FOR_DATA_FROM_TRAINER_IN_SECOND)
continue
return self._get_current_checkpoint_number(checkpoint_metadata_filepath=filename)
except Exception as e:
utils.json_format_logger("Exception [{}] occured while getting latest checkpoint from S3.".format(e),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_503))
def log_info(message):
''' Helper method that logs the exception
mesage - Message to send to the log
'''
json_format_logger(
message,
**build_system_error_dict(SIMAPP_MEMORY_BACKEND_EXCEPTION,
SIMAPP_EVENT_ERROR_CODE_500))
def callback_image(self, data):
try:
self.image_queue.put_nowait(data)
except queue.Full:
pass
except Exception as ex:
utils.json_format_logger("Error retrieving frame from gazebo: {}".format(ex),
**utils.build_system_error_dict(utils.SIMAPP_ENVIRONMENT_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
def download_model(self, checkpoint_dir):
s3_client = self.get_client()
filename = "None"
try:
filename = os.path.abspath(
os.path.join(checkpoint_dir, "checkpoint"))
if not os.path.exists(checkpoint_dir):
os.makedirs(checkpoint_dir)
while True:
response = s3_client.list_objects_v2(Bucket=self.bucket,
Prefix=self._get_s3_key(
self.lock_file))
if "Contents" not in response:
# If no lock is found, try getting the checkpoint
try:
s3_client.download_file(
Bucket=self.bucket,
Key=self._get_s3_key("checkpoint"),
Filename=filename)
except Exception as e:
time.sleep(2)
continue
else:
time.sleep(2)
continue
ckpt = CheckpointState()
if os.path.exists(filename):
contents = open(filename, 'r').read()
text_format.Merge(contents, ckpt)
rel_path = ckpt.model_checkpoint_path
checkpoint = int(rel_path.split('_Step')[0])
response = s3_client.list_objects_v2(
Bucket=self.bucket, Prefix=self._get_s3_key(rel_path))
if "Contents" in response:
num_files = 0
for obj in response["Contents"]:
filename = os.path.abspath(
os.path.join(
checkpoint_dir, obj["Key"].replace(
self.model_checkpoints_prefix, "")))
s3_client.download_file(Bucket=self.bucket,
Key=obj["Key"],
Filename=filename)
num_files += 1
return True
except Exception as e:
utils.json_format_logger(
"{} while downloading the model {} from S3".format(
e, filename),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
return False
def download_model(self, checkpoint_dir):
s3_client = self.get_client()
logger.info("Downloading pretrained model from %s/%s %s" % (self.bucket, self.model_checkpoints_prefix, checkpoint_dir))
filename = "None"
try:
filename = os.path.abspath(os.path.join(checkpoint_dir, "checkpoint"))
if not os.path.exists(checkpoint_dir):
logger.info("Model folder %s does not exist, creating" % filename)
os.makedirs(checkpoint_dir)
while True:
response = s3_client.list_objects_v2(Bucket=self.bucket,
Prefix=self._get_s3_key(self.lock_file))
if "Contents" not in response:
# If no lock is found, try getting the checkpoint
try:
key = self._get_s3_key("checkpoint")
logger.info("Downloading %s" % key)
s3_client.download_file(Bucket=self.bucket,
Key=key,
Filename=filename)
except Exception as e:
logger.info("Something went wrong, will retry in 2 seconds %s" % e)
time.sleep(2)
continue
else:
logger.info("Found a lock file %s , waiting" % self._get_s3_key(self.lock_file))
time.sleep(2)
continue
ckpt = CheckpointState()
if os.path.exists(filename):
contents = open(filename, 'r').read()
text_format.Merge(contents, ckpt)
rel_path = ckpt.model_checkpoint_path
checkpoint = int(rel_path.split('_Step')[0])
response = s3_client.list_objects_v2(Bucket=self.bucket,
Prefix=self._get_s3_key(rel_path))
if "Contents" in response:
num_files = 0
for obj in response["Contents"]:
filename = os.path.abspath(os.path.join(checkpoint_dir,
obj["Key"].replace(self.model_checkpoints_prefix,
"")))
logger.info("Downloading model file %s" % filename)
s3_client.download_file(Bucket=self.bucket,
Key=obj["Key"],
Filename=filename)
num_files += 1
return True
except Exception as e:
utils.json_format_logger ("{} while downloading the model {} from S3".format(e, filename),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
return False
def upload_file(self, s3_key, local_path):
s3_client = self.get_client()
try:
s3_client.upload_file(Filename=local_path,
Bucket=self.bucket,
Key=s3_key)
return True
except Exception as e:
utils.json_format_logger("{} on upload file-{} to s3 bucket-{} key-{}".format(e, local_path, self.bucket, s3_key),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
return False
def _get_current_checkpoint_number(self, checkpoint_metadata_filepath=None):
try:
if not os.path.exists(checkpoint_metadata_filepath):
return None
with open(checkpoint_metadata_filepath, 'r') as fp:
data = fp.read()
return int(data.split('_')[0])
except Exception as e:
utils.json_format_logger("Exception[{}] occured while reading checkpoint metadata".format(e),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
raise e
def get_ip(self):
s3_client = self.get_client()
self._wait_for_ip_upload()
try:
s3_client.download_file(self.bucket, self.config_key, 'ip.json')
with open("ip.json") as f:
ip = json.load(f)["IP"]
return ip
except Exception as e:
utils.json_format_logger("Exception [{}] occured, Cannot fetch IP of redis server running in SageMaker. Job failed!".format(e),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_503))
sys.exit(1)
def download_customer_reward_function(s3_client, reward_file_s3_key):
reward_function_local_path = os.path.join(CUSTOM_FILES_PATH,
"customer_reward_function.py")
success_reward_function_download = s3_client.download_file(
s3_key=reward_file_s3_key, local_path=reward_function_local_path)
if not success_reward_function_download:
utils.json_format_logger(
"Could not download the customer reward function file. Job failed!",
**utils.build_system_error_dict(
utils.SIMAPP_SIMULATION_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_503))
traceback.print_exc()
sys.exit(1)
def callback_image(self, data):
try:
self.image_queue.put_nowait(data)
except queue.Full:
# Only warn if its the middle of an episode, not during training
if self.allow_servo_step_signals:
logger.info("Warning: dropping image due to queue full")
pass
except Exception as ex:
utils.json_format_logger(
"Error retrieving frame from gazebo: {}".format(ex),
**utils.build_system_error_dict(
utils.SIMAPP_ENVIRONMENT_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
def racecar_reset(self):
try:
for joint in EFFORT_JOINTS:
self.clear_forces_client(joint)
prev_index, next_index = self.find_prev_next_waypoints(self.start_ndist)
self.reset_car_client(self.start_ndist, next_index)
# First clear the queue so that we set the state to the start image
_ = self.image_queue.get(block=True, timeout=None)
self.set_next_state()
except Exception as ex:
utils.json_format_logger("Unable to reset the car: {}".format(ex),
**utils.build_system_error_dict(utils.SIMAPP_ENVIRONMENT_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
def download_customer_reward_function(s3_client, reward_file_s3_key):
reward_function_local_path = os.path.join(CUSTOM_FILES_PATH,
"customer_reward_function.py")
success_reward_function_download = s3_client.download_file(
s3_key=reward_file_s3_key, local_path=reward_function_local_path)
if not success_reward_function_download:
utils.json_format_logger(
"Unable to download the reward function code.",
**utils.build_user_error_dict(
utils.SIMAPP_SIMULATION_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
traceback.print_exc()
utils.simapp_exit_gracefully()
def write_simtrace_data(self,jsondata):
if self.data_state != SIMTRACE_DATA_UPLOAD_UNKNOWN_STATE:
try:
csvdata = []
for key in SIMTRACE_CSV_DATA_HEADER:
csvdata.append(jsondata[key])
self.csvwriter.writerow(csvdata)
self.total_upload_size += sys.getsizeof(csvdata)
logger.debug ("csvdata={} size data={} csv={}".format(csvdata, sys.getsizeof(csvdata), sys.getsizeof(self.simtrace_csv_data.getvalue())))
except Exception as ex:
utils.json_format_logger("Invalid SIM_TRACE data format , Exception={}. Job failed!".format(ex),
**utils.build_system_error_dict(utils.SIMAPP_SIMULATION_WORKER_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
traceback.print_exc()
utils.simapp_exit_gracefully()
def _get_current_checkpoint(self):
try:
checkpoint_metadata_filepath = os.path.abspath(
os.path.join(self.params.checkpoint_dir, CHECKPOINT_METADATA_FILENAME))
checkpoint = CheckpointState()
if os.path.exists(checkpoint_metadata_filepath) == False:
return None
contents = open(checkpoint_metadata_filepath, 'r').read()
text_format.Merge(contents, checkpoint)
return checkpoint
except Exception as e:
utils.json_format_logger("Exception[{}] occured while reading checkpoint metadata".format(e),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_500))
raise e
def get_latest_checkpoint(self):
try:
filename = os.path.abspath(
os.path.join(self.params.checkpoint_dir, "latest_ckpt"))
if not os.path.exists(self.params.checkpoint_dir):
os.makedirs(self.params.checkpoint_dir)
while True:
s3_client = self._get_client()
# Check if there's a lock file
response = s3_client.list_objects_v2(
Bucket=self.params.bucket,
Prefix=self._get_s3_key(self.params.lock_file))
if "Contents" not in response:
try:
# If no lock is found, try getting the checkpoint
s3_client.download_file(
Bucket=self.params.bucket,
Key=self._get_s3_key(CHECKPOINT_METADATA_FILENAME),
Filename=filename)
except Exception as e:
logger.info(
"Error occured while getting latest checkpoint %s. Waiting."
% e)
time.sleep(
SLEEP_TIME_WHILE_WAITING_FOR_DATA_FROM_TRAINER_IN_SECOND
)
continue
else:
time.sleep(
SLEEP_TIME_WHILE_WAITING_FOR_DATA_FROM_TRAINER_IN_SECOND
)
continue
checkpoint = self._get_current_checkpoint(
checkpoint_metadata_filepath=filename)
if checkpoint:
checkpoint_number = self._get_checkpoint_number(checkpoint)
return checkpoint_number
except Exception as e:
utils.json_format_logger(
"Exception [{}] occured while getting latest checkpoint from S3."
.format(e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_503))
def _wait_for_ip_upload(self, timeout=600):
s3_client = self.get_client()
time_elapsed = 0
while True:
response = s3_client.list_objects(Bucket=self.bucket, Prefix=self.done_file_key)
if "Contents" not in response:
time.sleep(1)
time_elapsed += 1
if time_elapsed % 5 == 0:
logger.info ("Waiting for SageMaker Redis server IP... Time elapsed: %s seconds" % time_elapsed)
if time_elapsed >= timeout:
#raise RuntimeError("Cannot retrieve IP of redis server running in SageMaker")
utils.json_format_logger("Cannot retrieve IP of redis server running in SageMaker. Job failed!",
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION, utils.SIMAPP_EVENT_ERROR_CODE_503))
sys.exit(1)
else:
return
def upload_finished_file(self):
try:
s3_client = self._get_client()
s3_client.upload_fileobj(Fileobj=io.BytesIO(b''),
Bucket=self.params.bucket,
Key=self._get_s3_key(SyncFiles.FINISHED.value))
except botocore.exceptions.ClientError as e:
utils.json_format_logger("Unable to upload finished file to {}, {}"
.format(self.params.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger("Unable to upload finished file to {}, {}"
.format(self.params.bucket, e),
**utils.build_system_error_dict(utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def upload_file(self, s3_key, local_path):
s3_client = self.get_client()
try:
s3_client.upload_file(Filename=local_path,
Bucket=self.bucket,
Key=s3_key)
return True
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Unable to upload {} to {}: {}".format(
s3_key, self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
except Exception as e:
utils.json_format_logger(
"Unable to upload {} to {}: {}".format(s3_key, self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
return False
def upload_hyperparameters(self, hyperparams_json):
try:
s3_client = self.get_client()
file_handle = io.BytesIO(hyperparams_json.encode())
s3_client.upload_fileobj(file_handle, self.bucket,
self.hyperparameters_key)
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Hyperparameters failed to upload to {}, {}".format(
self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Hyperparameters failed to upload to {}, {}".format(
self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def get_ip(self):
s3_client = self.get_client()
self._wait_for_ip_upload()
try:
s3_client.download_file(self.bucket, self.config_key, 'ip.json')
with open("ip.json") as f:
ip = json.load(f)["IP"]
return ip
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Unable to retrieve redis ip from {}: {}".format(
self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Unable to retrieve redis ip from {}: {}".format(
self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def wait_for_checkpoint(checkpoint_dir, data_store=None, timeout=10):
"""
block until there is a checkpoint in checkpoint_dir
"""
for i in range(timeout):
if data_store:
data_store.load_from_store()
if has_checkpoint(checkpoint_dir):
return
time.sleep(10)
# one last time
if has_checkpoint(checkpoint_dir):
return
utils.json_format_logger(
"Checkpoint never found in {}, waited {} seconds.".format(
checkpoint_dir, timeout),
**utils.build_system_error_dict(
utils.SIMAPP_SIMULATION_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
traceback.print_exc()
utils.simapp_exit_gracefully()
def _wait_for_ip_upload(self, timeout=600):
s3_client = self.get_client()
time_elapsed = 0
while time_elapsed < timeout:
try:
response = s3_client.list_objects(Bucket=self.bucket,
Prefix=self.done_file_key)
except botocore.exceptions.ClientError as e:
utils.json_format_logger(
"Unable to access {}: {}".format(
self.bucket, e.response['Error']['Code']),
**utils.build_user_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400))
utils.simapp_exit_gracefully()
except Exception as e:
utils.json_format_logger(
"Unable to access {}: {}".format(self.bucket, e),
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
if "Contents" in response:
return
time.sleep(1)
time_elapsed += 1
if time_elapsed % 5 == 0:
logger.info(
"Waiting for SageMaker Redis server IP... Time elapsed: %s seconds"
% time_elapsed)
utils.json_format_logger(
"Timed out while attempting to retrieve the Redis IP",
**utils.build_system_error_dict(
utils.SIMAPP_S3_DATA_STORE_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
def training_worker(graph_manager, task_parameters, user_batch_size,
user_episode_per_rollout):
try:
# initialize graph
graph_manager.create_graph(task_parameters)
# save initial checkpoint
graph_manager.save_checkpoint()
# training loop
steps = 0
graph_manager.setup_memory_backend()
graph_manager.signal_ready()
# To handle SIGTERM
door_man = utils.DoorMan()
while steps < graph_manager.improve_steps.num_steps:
graph_manager.phase = core_types.RunPhase.TRAIN
graph_manager.fetch_from_worker(graph_manager.agent_params.algorithm.num_consecutive_playing_steps)
graph_manager.phase = core_types.RunPhase.UNDEFINED
episodes_in_rollout = graph_manager.memory_backend.get_total_episodes_in_rollout()
for level in graph_manager.level_managers:
for agent in level.agents.values():
agent.ap.algorithm.num_consecutive_playing_steps.num_steps = episodes_in_rollout
agent.ap.algorithm.num_steps_between_copying_online_weights_to_target.num_steps = episodes_in_rollout
if graph_manager.should_train():
# Make sure we have enough data for the requested batches
rollout_steps = graph_manager.memory_backend.get_rollout_steps()
if any(rollout_steps.values()) <= 0:
utils.json_format_logger("No rollout data retrieved from the rollout worker",
**utils.build_system_error_dict(utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
episode_batch_size = user_batch_size if min(rollout_steps.values()) > user_batch_size else 2**math.floor(math.log(min(rollout_steps.values()), 2))
# Set the batch size to the closest power of 2 such that we have at least two batches, this prevents coach from crashing
# as batch size less than 2 causes the batch list to become a scalar which causes an exception
for level in graph_manager.level_managers:
for agent in level.agents.values():
agent.ap.network_wrappers['main'].batch_size = episode_batch_size
steps += 1
graph_manager.phase = core_types.RunPhase.TRAIN
graph_manager.train()
graph_manager.phase = core_types.RunPhase.UNDEFINED
# Check for Nan's in all agents
rollout_has_nan = False
for level in graph_manager.level_managers:
for agent in level.agents.values():
if np.isnan(agent.loss.get_mean()):
rollout_has_nan = True
if rollout_has_nan:
utils.json_format_logger("NaN detected in loss function, aborting training.",
**utils.build_system_error_dict(utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
utils.simapp_exit_gracefully()
if graph_manager.agent_params.algorithm.distributed_coach_synchronization_type == DistributedCoachSynchronizationType.SYNC:
graph_manager.save_checkpoint()
else:
graph_manager.occasionally_save_checkpoint()
# Clear any data stored in signals that is no longer necessary
graph_manager.reset_internal_state()
for level in graph_manager.level_managers:
for agent in level.agents.values():
agent.ap.algorithm.num_consecutive_playing_steps.num_steps = user_episode_per_rollout
agent.ap.algorithm.num_steps_between_copying_online_weights_to_target.num_steps = user_episode_per_rollout
if door_man.terminate_now:
utils.json_format_logger("Received SIGTERM. Checkpointing before exiting.",
**utils.build_system_error_dict(utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500))
graph_manager.save_checkpoint()
break
except ValueError as err:
if utils.is_error_bad_ckpnt(err):
utils.log_and_exit("User modified model: {}".format(err),
utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_400)
else:
utils.log_and_exit("An error occured while training: {}".format(err),
utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500)
except Exception as ex:
utils.log_and_exit("An error occured while training: {}".format(ex),
utils.SIMAPP_TRAINING_WORKER_EXCEPTION,
utils.SIMAPP_EVENT_ERROR_CODE_500)
finally:
graph_manager.data_store.upload_finished_file()
