launch_height_baselines.py

# Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file is distributed
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
# express or implied. See the License for the specific language governing
# permissions and limitations under the License.
import logging
from pathlib import Path

from syne_tune import Tuner, StoppingCriterion
from syne_tune.backend import LocalBackend
from syne_tune.config_space import randint
from syne_tune.optimizer.baselines import (
    RandomSearch,
    ASHA,
)
from examples.training_scripts.height_example.train_height import (
    RESOURCE_ATTR,
    METRIC_ATTR,
    METRIC_MODE,
    MAX_RESOURCE_ATTR,
)
from syne_tune.try_import import try_import_gpsearchers_message


if __name__ == "__main__":
    logging.getLogger().setLevel(logging.INFO)

    random_seed = 31415927
    max_epochs = 100
    n_workers = 4

    config_space = {
        MAX_RESOURCE_ATTR: max_epochs,
        "width": randint(0, 20),
        "height": randint(-100, 100),
    }
    entry_point = (
        Path(__file__).parent
        / "training_scripts"
        / "height_example"
        / "train_height.py"
    )

    scheduler_kwargs = {
        "config_space": config_space,
        "metric": METRIC_ATTR,
        "mode": METRIC_MODE,
        "max_resource_attr": MAX_RESOURCE_ATTR,
    }
    schedulers = [
        RandomSearch(**scheduler_kwargs),
        ASHA(**scheduler_kwargs, resource_attr=RESOURCE_ATTR),
    ]
    try:
        from syne_tune.optimizer.baselines import BayesianOptimization

        # example of setting additional kwargs arguments
        schedulers.append(
            BayesianOptimization(
                **scheduler_kwargs,
                search_options={"num_init_random": n_workers + 2},
            )
        )
        from syne_tune.optimizer.baselines import MOBSTER

        schedulers.append(MOBSTER(*scheduler_kwargs, resource_attr=RESOURCE_ATTR))
    except Exception:
        logging.info(try_import_gpsearchers_message())

    for scheduler in schedulers:
        logging.info(f"\n*** running scheduler {scheduler} ***\n")

        trial_backend = LocalBackend(entry_point=str(entry_point))

        stop_criterion = StoppingCriterion(
            max_wallclock_time=20, min_metric_value={METRIC_ATTR: -6.0}
        )
        tuner = Tuner(
            trial_backend=trial_backend,
            scheduler=scheduler,
            stop_criterion=stop_criterion,
            n_workers=n_workers,
        )

        tuner.run()