#   Copyright (c) 2021 PaddlePaddle Authors. 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.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License 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
import traceback

import nvgpu

logging.basicConfig(
    level=logging.DEBUG,
    format="%(levelname)s: %(asctime)s %(filename)s" " [%(funcName)s:%(lineno)d][%(process)d] %(message)s",
    datefmt="%m-%d %H:%M:%S",
    filename=None,
    filemode="a",
)

if __name__ == "__main__":
    from argparse import ArgumentParser

    try:
        arg_parser = ArgumentParser(description="print available_gpu id, using nvgpu")
        arg_parser.add_argument("-b", "--best", default=None, type=int, help="output best N")
        args = arg_parser.parse_args()

        if args.best is not None:
            gpus = sorted(nvgpu.gpu_info(), key=lambda x: (x["mem_used"], x["index"]))
            ids = [x["index"] for x in gpus]
            print(",".join(ids[: args.best]))
        else:
            print(",".join(nvgpu.available_gpus()))

    except Exception:
        traceback.print_exc()
        exit(-1)
