def prepare_schedule(desc, schedule_file, root_dir, add_to_folder, resample, logger, ask_for_validation):
# Infers the search_type (grid or random) from provided schedule_file
schedule_file_path = Path(schedule_file)
assert schedule_file_path.suffix == '.py', f"The provided --schedule_file should be a python file " \
f"(see: alfred/schedule_examples). You provided " \
f"'--schedule_file={schedule_file}'"
if "grid_schedule" in schedule_file_path.name:
search_type = 'grid'
elif "random_schedule" in schedule_file_path.name:
search_type = 'random'
else:
raise ValueError(f"Provided --schedule_file has the name '{schedule_file_path.name}'. "
"Only grid_schedule's and random_schedule's are supported. "
"The name of the provided '--schedule_file' must fit one of the following forms: "
"'grid_schedule_NAME.py' or 'random_schedule_NAME.py'.")
if not schedule_file_path.exists():
raise ValueError(f"Cannot find the provided '--schedule_file': {schedule_file_path}")
# Gets experiments parameters
schedule_module = re.sub('\.py$', '', ".".join(schedule_file.split('/')))
if search_type == 'grid':
VARIATIONS, ALG_NAMES, TASK_NAMES, SEEDS, experiments, varied_params, get_run_args, schedule = extract_schedule_grid(schedule_module)
elif search_type == 'random':
param_samples, ALG_NAMES, TASK_NAMES, SEEDS, experiments, varied_params, get_run_args, schedule = extract_schedule_random(schedule_module)
else:
raise NotImplementedError
# Creates a list of alg_agent and task_name unique combinations
if desc is not None:
assert add_to_folder is None, "If --desc is defined, a new storage_dir folder will be created." \
"No --add_to_folder should be provided."
desc = f"{search_type}_{desc}"
agent_task_combinations = list(itertools.product(ALG_NAMES, TASK_NAMES))
mode = "NEW_STORAGE"
elif add_to_folder is not None:
assert (get_root(root_dir) / add_to_folder).exists(), f"{add_to_folder} does not exist."
assert desc is None, "If --add_to_folder is defined, new experiments will be added to the existing folder." \
"No --desc should be provided."
storage_name_id, git_hashes, alg_name, task_name, desc = \
DirectoryTree.extract_info_from_storage_name(add_to_folder)
agent_task_combinations = list(itertools.product([alg_name], [task_name]))
mode = "EXISTING_STORAGE"
else:
raise NotImplementedError
# Duplicates or resamples hyperparameters to match the number of agent_task_combinations
n_combinations = len(agent_task_combinations)
experiments = [experiments]
if search_type == 'random':
param_samples = [param_samples]
if search_type == 'random' and resample:
assert not add_to_folder
for i in range(n_combinations - 1):
param_sa, _, _, _, expe, varied_pa, get_run_args, _ = extract_schedule_random(schedule_module)
experiments.append(expe)
param_samples.append(param_sa)
else:
experiments = experiments * n_combinations
if search_type == 'random':
param_samples = param_samples * n_combinations
# Printing summary of schedule_xyz.py
info_str = f"\n\nPreparing a {search_type.upper()} search over {len(experiments)} experiments, {len(SEEDS)} seeds"
info_str += f"\nALG_NAMES: {ALG_NAMES}"
info_str += f"\nTASK_NAMES: {TASK_NAMES}"
info_str += f"\nSEEDS: {SEEDS}"
if search_type == "grid":
info_str += f"\n\nVARIATIONS:"
for key in VARIATIONS.keys():
info_str += f"\n\t{key}: {VARIATIONS[key]}"
else:
info_str += f"\n\nParams to be varied over: {varied_params}"
info_str += f"\n\nDefault {config_to_str(get_run_args(overwritten_cmd_line=''))}\n"
logger.debug(info_str)
# Asking for user validation
if ask_for_validation:
if mode == "NEW_STORAGE":
git_hashes = DirectoryTree.get_git_hashes()
string = "\n"
for alg_name, task_name in agent_task_combinations:
string += f"\n\tID_{git_hashes}_{alg_name}_{task_name}_{desc}"
logger.debug(f"\n\nAbout to create {len(agent_task_combinations)} storage directories, "
f"each with {len(experiments)} experiments:"
f"{string}")
else:
n_existing_experiments = len([path for path in get_root(root_dir) / add_to_folder.iterdir()
if path.name.startswith('experiment')])
logger.debug(f"\n\nAbout to add {len(experiments)} experiment folders in the following directory"
f" (there are currently {n_existing_experiments} in this folder):"
f"\n\t{add_to_folder}")
answer = input("\nShould we proceed? [y or n]")
if answer.lower() not in ['y', 'yes']:
logger.debug("Aborting...")
sys.exit()
logger.debug("Starting...")
# For each storage_dir to be created
all_storage_dirs = []
for alg_task_i, (alg_name, task_name) in enumerate(agent_task_combinations):
# Determines storing ID (if new storage_dir)
if mode == "NEW_STORAGE":
tmp_dir_tree = DirectoryTree(alg_name=alg_name, task_name=task_name, desc=desc, seed=1, root=root_dir)
storage_name_id = tmp_dir_tree.storage_dir.name.split('_')[0]
# For each experiments...
for param_dict in experiments[alg_task_i]:
# Creates dictionary pointer-access to a training config object initialized by default
config = get_run_args(overwritten_cmd_line="")
config_dict = vars(config)
# Modifies the config for this particular experiment
config.alg_name = alg_name
config.task_name = task_name
config.desc = desc
config_unique_dict = {k: v for k, v in param_dict.items() if k in varied_params}
config_unique_dict['alg_name'] = config.alg_name
config_unique_dict['task_name'] = config.task_name
config_unique_dict['seed'] = config.seed
for param_name in param_dict.keys():
if param_name not in config_dict.keys():
raise ValueError(f"'{param_name}' taken from the schedule is not a valid hyperparameter "
f"i.e. it cannot be found in the Namespace returned by get_run_args().")
else:
config_dict[param_name] = param_dict[param_name]
# Create the experiment directory
dir_tree = create_experiment_dir(storage_name_id, config, config_unique_dict, SEEDS, root_dir, git_hashes)
all_storage_dirs.append(dir_tree.storage_dir)
# Saves VARIATIONS in the storage directory
first_experiment_created = int(dir_tree.current_experiment.strip('experiment')) - len(experiments[0]) + 1
last_experiment_created = first_experiment_created + len(experiments[0]) - 1
if search_type == 'grid':
VARIATIONS['alg_name'] = ALG_NAMES
VARIATIONS['task_name'] = TASK_NAMES
VARIATIONS['seed'] = SEEDS
key = f'{first_experiment_created}-{last_experiment_created}'
if (dir_tree.storage_dir / 'variations.json').exists():
variations_dict = load_dict_from_json(filename=str(dir_tree.storage_dir / 'variations.json'))
assert key not in variations_dict.keys()
variations_dict[key] = VARIATIONS
else:
variations_dict = {key: VARIATIONS}
save_dict_to_json(variations_dict, filename=str(dir_tree.storage_dir / 'variations.json'))
open(str(dir_tree.storage_dir / 'GRID_SEARCH'), 'w+').close()
elif search_type == 'random':
len_samples = len(param_samples[alg_task_i])
fig_width = 2 * len_samples if len_samples > 0 else 2
fig, ax = plt.subplots(len(param_samples[alg_task_i]), 1, figsize=(6, fig_width))
if not hasattr(ax, '__iter__'):
ax = [ax]
plot_sampled_hyperparams(ax, param_samples[alg_task_i],
log_params=['lr', 'tau', 'initial_alpha', 'grad_clip_value', 'lamda1', 'lamda2'])
j = 1
while True:
if (dir_tree.storage_dir / f'variations{j}.png').exists():
j += 1
else:
break
fig.savefig(str(dir_tree.storage_dir / f'variations{j}.png'))
plt.close(fig)
open(str(dir_tree.storage_dir / 'RANDOM_SEARCH'), 'w+').close()
# Printing summary
logger.info(f'Created directories '
f'{str(dir_tree.storage_dir)}/experiment{first_experiment_created}-{last_experiment_created}')
# Saving the list of created storage_dirs in a text file located with the provided schedule_file
schedule_name = Path(schedule.__file__).parent.stem
with open(Path(schedule.__file__).parent / f"list_searches_{schedule_name}.txt", "a+") as f:
for storage_dir in all_storage_dirs:
f.write(f"{storage_dir.name}\n")
logger.info(f"\nEach of these experiments contain directories for the following seeds: {SEEDS}")
def create_retrain_best(from_file, storage_name, best_experiments_mapping,
n_retrain_seeds, train_time_factor, root_dir):
logger = create_logger(name="CREATE_RETRAIN", loglevel=logging.INFO)
logger.info("\nCREATING retrainBest directories")
# Select storage_dirs to run over
storage_dirs = select_storage_dirs(from_file, storage_name, root_dir)
# Sanity-check that storages exist
storage_dirs = [
storage_dir for storage_dir in storage_dirs
if sanity_check_exists(storage_dir, logger)
]
# Imports schedule file to have same settings for DirectoryTree.git_repos_to_track
if from_file:
schedule_file = str([
path for path in Path(from_file).parent.iterdir()
if 'schedule' in path.name and path.name.endswith('.py')
][0])
schedule_module = ".".join(schedule_file.split('/')).strip('.py')
schedule = import_module(schedule_module)
# Creates retrainBest directories
retrainBest_storage_dirs = []
new_retrainBest_storage_dirs = []
for storage_dir in storage_dirs:
try:
# Checks if a retrainBest directory already exists for this search
search_storage_id = storage_dir.name.split('_')[0]
corresponding_retrain_directories = [
path for path in get_root(root_dir).iterdir()
if f"retrainBest{search_storage_id}" in path.name.split('_')
]
if len(corresponding_retrain_directories) > 0:
assert len(corresponding_retrain_directories) == 1
retrainBest_dir = corresponding_retrain_directories[0]
logger.info(f"Existing retrainBest\n\n"
f"\t{storage_dir.name} -> {retrainBest_dir.name}")
retrainBest_storage_dirs.append(retrainBest_dir)
continue
else:
# The retrainBest directory will contain one experiment with bestConfig from the search...
if best_experiments_mapping is None:
# ... bestConfig is found in the summary/ folder from the search
best_config = [
path for path in (storage_dir / "summary").iterdir()
if path.name.startswith("bestConfig")
][0]
assert len(best_config) == 1 and type(best_config) is list
else:
# ... bestConfig is loaded based on specified --best_experiment_mapping
best_experiments_mapping_dict = load_dict_from_json(
best_experiments_mapping)
assert storage_dir.name in best_experiments_mapping_dict.keys(
)
best_experiment_num = best_experiments_mapping_dict[
storage_dir.name]
seed_dir = DirectoryTree.get_all_seeds(
experiment_dir=storage_dir /
f"experiment{best_experiment_num}")[0]
best_config = seed_dir / "config.json"
config_dict = load_dict_from_json(filename=str(best_config))
# Retrain experiments run for twice as long
if config_dict['max_episodes'] is not None:
config_dict['max_episodes'] = int(
config_dict['max_episodes'] * train_time_factor)
elif config_dict['max_steps'] is not None:
config_dict['max_steps'] = int(config_dict['max_steps'] *
train_time_factor)
else:
raise ValueError(
"At least one of max_episodes or max_steps should be defined"
)
# Updates the description
if "random" in config_dict['desc'] or "grid" in config_dict[
'desc']:
new_desc = config_dict['desc'] \
.replace("random", f"retrainBest{search_storage_id}") \
.replace("grid", f"retrainBest{search_storage_id}")
else:
new_desc = config_dict[
'desc'] + f"_retrainBest{search_storage_id}"
config_dict['desc'] = new_desc
# Creates config Namespace with loaded config_dict
config = argparse.ArgumentParser().parse_args("")
config_pointer = vars(config)
config_pointer.update(config_dict) # updates config
config_unique_dict = {}
config_unique_dict['alg_name'] = config.alg_name
config_unique_dict['task_name'] = config.task_name
config_unique_dict['seed'] = config.seed
# Gets new storage_name_id
tmp_dir_tree = DirectoryTree(alg_name="",
task_name="",
desc="",
seed=1,
root=root_dir)
retrain_storage_id = tmp_dir_tree.storage_dir.name.split(
'_')[0]
# Creates the new storage_dir for retrainBest
dir_tree = create_experiment_dir(
storage_name_id=retrain_storage_id,
config=config,
config_unique_dict=config_unique_dict,
SEEDS=[i * 10 for i in range(n_retrain_seeds)],
root_dir=root_dir,
git_hashes=DirectoryTree.get_git_hashes())
retrainBest_storage_dirs.append(dir_tree.storage_dir)
new_retrainBest_storage_dirs.append(dir_tree.storage_dir)
logger.info(
f"New retrainBest:\n\n"
f"\t{storage_dir.name} -> {dir_tree.storage_dir.name}")
except Exception as e:
logger.info(
f"Could not create retrainBest-storage_dir {storage_dir}")
logger.info(f"\n\n{e}\n{traceback.format_exc()}")
# Saving the list of created storage_dirs in a text file located with the provided schedule_file
schedule_name = Path(from_file).parent.stem
with open(
Path(from_file).parent / f"list_retrains_{schedule_name}.txt",
"a+") as f:
for storage_dir in new_retrainBest_storage_dirs:
f.write(f"{storage_dir.name}\n")
return retrainBest_storage_dirs