def search(self):
"""Search a sample."""
if self.need_reignite_queue:
# share weights and use reignite model
worker_id, desc = self.need_reignite_queue.popitem()
reignite_record = ReportServer().get_record(
self.step_name, worker_id)
desc['network.backbone.code'] = reignite_record.desc['code']
desc['network.backbone.weight_file'] = reignite_record.weights_file
self.finished_reignite_queue[worker_id] = desc
logging.info(
"Finished reignited models, work_id:{} desc:{}".format(
worker_id, desc))
return dict(worker_id=worker_id, encoded_desc=desc)
pareto_records = ReportServer().get_pareto_front_records(
choice='normal')
best_record = pareto_records[0] if pareto_records else None
desc = self.search_space.sample()
arch_code = desc.get('network.backbone.code')
if best_record:
desc['network.backbone.weight_file'] = best_record.weights_file
if best_record or not self.config.retain_original_code:
desc['network.backbone.code'] = self._mutate_serialnet(arch_code)
self.sample_count += 1
if self.config.reignite and self.config.reignite_desc:
return self._reignite(desc)
logging.info("desc:{}".format(desc))
return dict(worker_id=self.sample_count, encoded_desc=desc)
def do(self):
"""Start to run fully train with horovod or local trainer."""
logger.info("TrainPipeStep started...")
records = self._get_current_step_records()
logger.debug("load pipestep records: {}".format(records))
self.master = create_master()
self._train_multi_models(records)
self.master.join()
ReportServer().output_step_all_records(step_name=self.task.step_name)
self.master.close_client()
ReportServer().backup_output_path()
def search(self):
"""Search code of one model.
:return: searched code of the model.
"""
records = ReportServer().get_pareto_front_records(['nas'])
encodings = []
for record in records:
custom = record.desc['custom']
encodings.append(custom['encoding'])
pareto_front = encodings
model_str = random.choice(pareto_front)
print('model_str', model_str)
ratio = np.random.randint(low=0, high=self.num_transform + 1)
print('ratio', ratio)
context_path = model_str[0].split('_')
spatial_path = model_str[1].split('_')
print('context_path', context_path)
print('spatial_path', spatial_path)
spatial_path = self.mutate_channel(spatial_path)
context_path[-1] = self.do_transform(context_path[-1], num_mutate=ratio)
spatial_path[-1] = self.do_transform(spatial_path[-1], num_mutate=self.num_transform - ratio)
encoding = ['_'.join(context_path), '_'.join(spatial_path)]
logging.info("Mutate from {} to {}".format(model_str, encoding))
return encoding
def search(self):
"""Search one mutated model.
:return: current number of samples, and the model
"""
desc = deepcopy(self.search_space)
search_desc = desc.custom
records = ReportServer().get_pareto_front_records(['random', 'mutate'])
codes = []
for record in records:
custom = record.desc['custom']
codes.append(custom['code'])
num_ops = len(search_desc.op_names)
upper_bounds = [num_ops, 2, 2, num_ops, num_ops, 5, 5, num_ops, num_ops,
8, 8, num_ops, num_ops, 4, 4, 5, 5, 6, 6]
code_to_mutate = random.choice(codes)
index = random.randrange(len(upper_bounds))
choices = list(range(upper_bounds[index]))
choices.pop(int(code_to_mutate[index + 1], 36))
choice = random.choice(choices)
code_mutated = code_to_mutate[:index + 1] + str(choice) + code_to_mutate[index + 2:]
search_desc['code'] = code_mutated
search_desc['method'] = "mutate"
logging.info("Mutate from {} to {}".format(code_to_mutate, code_mutated))
search_desc = self.codec.decode(search_desc)
self.sample_count += 1
desc['custom'] = search_desc
return self.sample_count, desc
def search(self):
"""Search one NetworkDesc from search space.
:return: search id, network desc
:rtype: int, NetworkDesc
"""
if self.random_count < self.random_models:
self.random_count += 1
desc = self._random_sample()
# desc.update({"trainer.codec": dict(desc)})
return self.random_count, desc
records = ReportServer().get_pareto_front_records(self.step_name, self.num_individual)
codes = [record.desc.get('backbone').get('encoding') for record in records]
logging.info("codes=%s", codes)
if len(codes) < 2:
encoding1, encoding2 = codes[0], codes[0]
else:
encoding1, encoding2 = random.sample(codes, 2)
choice = random.randint(0, 1)
# mutate
if choice == 0:
encoding_new = self.mutatation(encoding1)
# crossover
else:
encoding_new, _ = self.crossover(encoding1, encoding2)
self.ea_count += 1
if self.ea_count % self.num_individual == 0:
self.ea_epoch += 1
desc = self.codec.decode(encoding_new)
return self.random_count + self.ea_count, desc
def do(self):
"""Do the main task in this pipe step."""
logging.debug("SearchPipeStep started...")
while not self.generator.is_completed:
res = self.generator.sample()
if res:
self._dispatch_trainer(res)
else:
time.sleep(0.2)
self.master.join()
logging.debug("Pareto_front values: %s",
ReportServer().pareto_front(General.step_name))
ReportServer().output_pareto_front(General.step_name)
self.master.close_client()
if General.clean_worker_dir:
self._clean_checkpoint()
def _simulate_tiny_pipeline(self, cfg_tiny):
"""Simulate tiny pipeline by using one sample one epoch."""
report = ReportServer()
for i, step_name in enumerate(PipelineConfig.steps):
step_cfg = cfg_tiny.get(step_name)
if step_cfg.pipe_step.type != 'SearchPipeStep':
continue
step_cfg.trainer.distributed = False
step_cfg.trainer.epochs = 1
self.restrict_config.trials[step_name] = 1
General.step_name = step_name
PipeStepConfig.from_dict(step_cfg)
pipestep = PipeStep()
if i == 0:
pipestep.do()
record = report.get_step_records(step_name)[-1]
self.epoch_time = record.runtime
_worker_path = TaskOps().local_base_path
if os.path.exists(_worker_path):
os.system('rm -rf {}'.format(_worker_path))
if step_cfg.pipe_step.type == 'SearchPipeStep':
self.params_dict[step_name][
'max_samples'] = pipestep.generator.search_alg.max_samples
_file = os.path.join(TaskOps().step_path, ".generator")
if os.path.exists(_file):
os.system('rm {}'.format(_file))
def _get_current_step_records(self):
step_name = General.step_name
models_folder = PipeStepConfig.pipe_step.get("models_folder")
cur_index = PipelineConfig.steps.index(step_name)
if cur_index >= 1 or models_folder:
if not models_folder:
models_folder = FileOps.join_path(
TaskOps().local_output_path,
PipelineConfig.steps[cur_index - 1])
models_folder = models_folder.replace("{local_base_path}",
TaskOps().local_base_path)
records = ReportServer().load_records_from_model_folder(
models_folder)
else:
records = self._load_single_model_records()
final_records = []
for record in records:
if not record.weights_file:
logger.error("Model file is not existed, id={}".format(
record.worker_id))
else:
record.step_name = General.step_name
final_records.append(record)
logging.debug("Records: {}".format(final_records))
return final_records
def search(self):
"""Search one mutated model.
:return: current number of samples, and the model
"""
desc = deepcopy(self.search_space)
search_desc = desc.custom
# TODO: merge sr ea in one pipe step.
records = ReportServer().get_pareto_front_records(['random', 'mutate'])
codes = []
for record in records:
codes.append(record.desc['custom']['code'])
code_to_mutate = random.choice(codes)
current_mutate, code_mutated = 0, code_to_mutate
num_candidates = len(search_desc["candidates"])
while current_mutate < self.num_mutate:
code_new = self.mutate_once(code_mutated, num_candidates)
if code_new != code_mutated:
current_mutate += 1
code_mutated = code_new
logging.info("Mutate from {} to {}".format(code_to_mutate, code_mutated))
search_desc['code'] = code_mutated
search_desc['method'] = "mutate"
search_desc = self.codec.decode(search_desc)
desc['custom'] = search_desc
self.sample_count += 1
return dict(worker_id=self.sample_count, encoded_desc=desc)
def get_pareto_front(self):
"""Get the pareto front of trained candidates."""
records = ReportServer().get_pareto_front_records()
codes = []
for record in records:
codes.append(record.desc['code'])
code_to_mutate = random.choice(codes)
return code_to_mutate
def do(self):
"""Start to run benchmark evaluator."""
logger.info("BenchmarkPipeStep started...")
records = self._get_current_step_records()
if not records:
logger.error("There is no model to evaluate.")
return
self.master = create_master()
for record in records:
_record = ReportRecord(worker_id=record.worker_id,
desc=record.desc,
step_name=record.step_name)
ReportClient().broadcast(_record)
ReportServer().add_watched_var(record.step_name, record.worker_id)
self._evaluate_single_model(record)
self.master.join()
ReportServer().output_step_all_records(step_name=General.step_name)
self.master.close_client()
ReportServer().backup_output_path()
def search(self):
"""Search a sample."""
pareto_records = ReportServer().get_pareto_front_records(
choice='normal')
best_record = pareto_records[0] if pareto_records else None
desc = self.search_space.sample()
if best_record:
desc['network.neck.code'] = self._mutate_parallelnet(
best_record.desc.get("neck").get('code'))
self.sample_count += 1
logging.info("desc:{}".format(desc))
return dict(worker_id=self.sample_count, encoded_desc=desc)
def run(self):
"""Execute the whole pipeline."""
def _shutdown_cluster(signum, frame):
logging.info("Shutdown urgently.")
shutdown_cluster()
os._exit(0)
steps_time = []
error_occured = False
try:
signal.signal(signal.SIGINT, _shutdown_cluster)
signal.signal(signal.SIGTERM, _shutdown_cluster)
_ = ReportServer()
for step_name in PipelineConfig.steps:
step_cfg = UserConfig().data.get(step_name)
General.step_name = step_name
PipeStepConfig.renew()
PipeStepConfig.from_dict(step_cfg, skip_check=False)
self._set_evaluator_config(step_cfg)
logging.info("-" * 48)
logging.info(" Step: {}".format(step_name))
logging.info("-" * 48)
logger.debug("Pipe step config: {}".format(PipeStepConfig()))
if PipeStepConfig.type == "SearchPipeStep":
General._parallel = General.parallel_search
if PipeStepConfig.type == "TrainPipeStep":
General._parallel = General.parallel_fully_train
start_time = datetime.datetime.now()
PipeStep().do()
end_time = datetime.datetime.now()
steps_time.append([step_name, start_time, end_time, self._interval_time(start_time, end_time)])
except Exception:
logger.error("Failed to run pipeline.")
logger.error(traceback.format_exc())
error_occured = True
try:
shutdown_cluster()
except Exception:
logger.error("Failed to shutdown dask cluster.")
logger.error(traceback.format_exc())
if not error_occured:
self._show_pipeline_info(steps_time, step_name)
def search(self):
"""Search one NetworkDesc from search space.
:return: search id, network desc
:rtype: int, NetworkDesc
"""
if self.sample_count < self.random_models:
self.sample_count += 1
return dict(worker_id=self.sample_count,
encoded_desc=self.search_space.sample())
records = ReportServer().get_pareto_front_records(
self.step_name, self.num_individual)
if not records:
return None
codes = []
each_codes_cache = {}
# Merge codes
for record in records:
each_code = []
for key, item in record.desc.get('props').items():
each_codes_cache[key] = len(item)
each_code.extend(item)
codes.append(each_code)
self.length = len(codes[0])
logging.info("codes sum={}, code length={}".format(
sum(codes[0]), self.length))
if len(codes) < 2:
encoding1, encoding2 = codes[0], codes[0]
else:
encoding1, encoding2 = random.sample(codes, 2)
choice = random.randint(0, 1)
# mutate
if choice == 0:
encoding_new = self.mutatation(encoding1)
# crossover
else:
encoding_new, _ = self.crossover(encoding1, encoding2)
# split codes
desc = {}
for _name, _size in each_codes_cache.items():
desc["network.props.{}".format(_name)] = encoding_new[:_size]
encoding_new = encoding_new[_size:]
self.sample_count += 1
return dict(worker_id=self.sample_count, encoded_desc=desc)
def search(self):
"""Search code of a model."""
desc = deepcopy(self.search_space)
search_desc = self.search_space.custom
if self.sample_count < self.max_sample_random:
encoding = self.random.search()
else:
records = ReportServer().get_pareto_front_records(['nas'])
if len(records) == 0:
encoding = self.random.search()
print('pareto_front_records is None, do random search')
else:
encoding = self.mutate.search()
search_desc['encoding'] = deepcopy(encoding)
encoding[0] = self.codec.decode(encoding[0])
search_desc['config'] = encoding
self.sample_count += 1
desc['custom'] = search_desc
return self.sample_count, desc
def update(self, step_name, worker_id):
"""Update search algorithm accord to the worker path.
:param step_name: step name
:param worker_id: current worker id
:return:
"""
record = ReportClient.get_record(step_name, worker_id)
logging.debug("Get Record=%s", str(record))
self.search_alg.update(record.serialize())
self.dump()
if not hasattr(
self.search_alg,
'_remove_watched_var') or self.search_alg._remove_watched_var:
ReportServer.remove_watched_var(step_name, worker_id)
logging.info("Update Success. step_name=%s, worker_id=%s, desc=%s",
step_name, worker_id, record.desc)
logging.info("Best values: %s",
ReportServer().print_best(step_name=General.step_name))
def __init__(self, update_func=None):
"""Init master attrs, setup and start dask distributed cluster and local multiprocess pool."""
self.cfg = General()
self.task_count = 0
self.eval_count = General.worker.eval_count
self.dask_env = DaskEnv(General.env, self.__master_path__,
General.devices_per_trainer,
TaskOps().temp_path)
status = self.dask_env.start()
if not status or not self.dask_env.is_master:
sys.exit(0)
self._start_cluster()
self.t_queue = Queue()
self.update_func = update_func
self.evaluator_list = {}
self._thread_runing = True
self._lock = Lock()
self._thread = self._run_monitor_thread()
ReportServer().renew()
return
def _get_current_step_records(self):
step_name = self.task.step_name
models_folder = PipeStepConfig.pipe_step.get("models_folder")
cur_index = PipelineConfig.steps.index(step_name)
if cur_index >= 1 or models_folder:
# records = ReportServer().get_pareto_front_records(PipelineConfig.steps[cur_index - 1])
if not models_folder:
models_folder = FileOps.join_path(
TaskOps().local_output_path,
PipelineConfig.steps[cur_index - 1])
models_folder = models_folder.replace("{local_base_path}",
TaskOps().local_base_path)
records = ReportServer().load_records_from_model_folder(
models_folder)
else:
records = [ReportRecord(step_name, 0)]
logging.debug("Records: {}".format(records))
for record in records:
record.step_name = step_name
return records
def __init__(self, search_space=None, **kwargs):
"""Init DnetNas."""
super(DnetNas, self).__init__(search_space, **kwargs)
# ea or random
self.num_mutate = self.config.policy.num_mutate
self.random_ratio = self.config.policy.random_ratio
self.max_sample = self.config.range.max_sample
self.min_sample = self.config.range.min_sample
self.sample_count = 0
logging.info("inited DnetNas")
self.pareto_front = ParetoFront(self.config.pareto.object_count,
self.config.pareto.max_object_ids)
self._best_desc_file = 'nas_model_desc.json'
block_nas_folder = ModelConfig.models_folder.format(
local_base_path=self.local_base_path)
logging.info(f'folder: {block_nas_folder}')
base_reports = ReportServer().load_records_from_model_folder(
block_nas_folder)
logging.info(f'base_reports: {base_reports}')
self.base_block = base_reports[0].desc['backbone']['encoding'].split(
'_')[0]