






"""simple docstring"""



import os
from argparse import ArgumentParser
from typing import List

import torch.utils.data

from datasets import Dataset, IterableDataset
from datasets.distributed import split_dataset_by_node


A__	:    Dict			 = 4
A__	:    Union[str, Any]			 = 3







class        lowercase__      (							snake_case__       ):
   pass


def 			_snake_case    (					lowerCamelCase__     :   List[str]  )    ->     Optional[int]:
       for shard in shards:
              for i in range(lowerCamelCase__  ):
                     yield {"i": i, "shard": shard}

def 			_snake_case    (					)    ->     Optional[Any]:
       lowerCamelCase_	:							List[Any]									=int(os.environ["RANK"]  )
       lowerCamelCase_	:							List[Any]									=int(os.environ["WORLD_SIZE"]  )

       lowerCamelCase_	:							Optional[int]									=ArgumentParser()
       parser.add_argument("--streaming"    ,						type=lowerCamelCase__  )
       parser.add_argument("--local_rank"    ,						type=lowerCamelCase__  )
       parser.add_argument("--num_workers"    ,						type=lowerCamelCase__    ,						default=0  )
       lowerCamelCase_	:							int									=parser.parse_args()
       lowerCamelCase_	:							Tuple									=args.streaming
       lowerCamelCase_	:							Dict									=args.num_workers

       lowerCamelCase_	:							Optional[Any]									={"shards": [F"""shard_{shard_idx}""" for shard_idx in range(lowerCamelCase__  )]}
       lowerCamelCase_	:							Optional[Any]									=IterableDataset.from_generator(lowerCamelCase__    ,						gen_kwargs=lowerCamelCase__  )
       if not streaming:
              lowerCamelCase_	:							List[str]									=Dataset.from_list(list(lowerCamelCase__  )  )

       lowerCamelCase_	:							Any									=split_dataset_by_node(lowerCamelCase__    ,						rank=lowerCamelCase__    ,						world_size=lowerCamelCase__  )
       lowerCamelCase_	:							List[Any]									=torch.utils.data.DataLoader(lowerCamelCase__    ,						num_workers=lowerCamelCase__  )

       lowerCamelCase_	:							Union[str, Any]									=NUM_SHARDS * NUM_ITEMS_PER_SHARD
       lowerCamelCase_	:							List[str]									=full_size // world_size
       expected_local_size += int(rank < (full_size % world_size)  )

       lowerCamelCase_	:							Optional[int]									=sum(1 for _ in dataloader  )
       if local_size != expected_local_size:
              raise FailedTestError(F"""local_size {local_size} != expected_local_size {expected_local_size}"""  )


if __name__ == "__main__":
      main()











"""simple docstring"""



# Copyright 2021 The HuggingFace Team. 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.

from argparse import ArgumentParser

from accelerate.commands.config import get_config_parser
from accelerate.commands.env import env_command_parser
from accelerate.commands.launch import launch_command_parser
from accelerate.commands.test import test_command_parser
from accelerate.commands.tpu import tpu_command_parser

def 			_snake_case    (					)    ->     Tuple:
							lowerCamelCase_	:							Optional[int]									=ArgumentParser("Accelerate CLI tool"    ,						usage="accelerate <command> [<args>]"    ,						allow_abbrev=lowerCamelCase__  )
							lowerCamelCase_	:							Optional[int]									=parser.add_subparsers(help="accelerate command helpers"  )

							# Register commands
							get_config_parser(subparsers=lowerCamelCase__  )
							env_command_parser(subparsers=lowerCamelCase__  )
							launch_command_parser(subparsers=lowerCamelCase__  )
							tpu_command_parser(subparsers=lowerCamelCase__  )
							test_command_parser(subparsers=lowerCamelCase__  )

							# Let's go
							lowerCamelCase_	:							int									=parser.parse_args()

							if not hasattr(lowerCamelCase__    ,						"func"  ):
														parser.print_help()
														exit(1  )

							# Run
							args.func(lowerCamelCase__  )


if __name__ == "__main__":
						main()



