
"""simple docstring"""
import os
import sys
from pathlib import Path

import pytest

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

from .utils import execute_subprocess_async, get_torch_dist_unique_port, require_torch
def 					a__ ( ):

  """simple docstring"""







  _snake_case  :    int            = Dataset.from_dict({"i": range(17		)}		)
  _snake_case  :    Tuple            = len(a		)
  _snake_case  :    int            = 3
  _snake_case  :    Any            = [
      split_dataset_by_node(a							,  rank=a							,  world_size=a		) for rank in range(a		)
  ]
  assert sum(len(a		) for ds in datasets_per_rank		) == full_size
  assert len({tuple(x.values()		) for ds in datasets_per_rank for x in ds}		) == full_size
def 					a__ ( ):

  """simple docstring"""







  def gen():
    return ({"i": i} for i in range(17		))

  _snake_case  :    Union[str, Any]            = 3
  _snake_case  :    Optional[int]            = IterableDataset.from_generator(a		)
  _snake_case  :    Optional[int]            = len(list(a		)		)
  _snake_case  :    Optional[int]            = [
      split_dataset_by_node(a							,  rank=a							,  world_size=a		) for rank in range(a		)
  ]
  assert sum(len(list(a		)		) for ds in datasets_per_rank		) == full_size
  assert len({tuple(x.values()		) for ds in datasets_per_rank for x in ds}		) == full_size
@pytest.mark.parametrize("shards_per_node"							,  [1, 2, 3]		)
def 					a__ ( a :					int		):

  """simple docstring"""







  def gen(a :					int		):
    for shard in shards:
      yield from ({"i": i, "shard": shard} for i in range(17		))

  _snake_case  :    str            = 3
  _snake_case  :    List[Any]            = shards_per_node * world_size
  _snake_case  :    int            = {"shards": [f'shard_{shard_idx}.txt' for shard_idx in range(a		)]}
  _snake_case  :    List[str]            = IterableDataset.from_generator(a							,  gen_kwargs=a		)
  _snake_case  :    Dict            = len(list(a		)		)
  assert full_ds.n_shards == world_size * shards_per_node
  _snake_case  :    Dict            = [
      split_dataset_by_node(a							,  rank=a							,  world_size=a		) for rank in range(a		)
  ]
  assert [ds.n_shards for ds in datasets_per_rank] == [shards_per_node] * world_size
  assert sum(len(list(a		)		) for ds in datasets_per_rank		) == full_size
  assert len({tuple(x.values()		) for ds in datasets_per_rank for x in ds}		) == full_size
def 					a__ ( ):

  """simple docstring"""







  def gen():
    return ({"i": i} for i in range(17		))

  _snake_case  :    Tuple            = 2
  _snake_case  :    str            = IterableDataset.from_generator(a		)
  _snake_case  :    List[Any]            = len(list(a		)		)

  _snake_case  :    Union[str, Any]            = split_dataset_by_node(a							,  rank=0							,  world_size=a		).shuffle(seed=42		)
  assert len(list(a		)		) == 1 + full_size // world_size
  with pytest.raises(a		):
    split_dataset_by_node(a							,  rank=0							,  world_size=a		).shuffle()

  _snake_case  :    str            = split_dataset_by_node(full_ds.shuffle(seed=42		)							,  rank=0							,  world_size=a		)
  assert len(list(a		)		) == 1 + full_size // world_size
  with pytest.raises(a		):
    split_dataset_by_node(full_ds.shuffle()							,  rank=0							,  world_size=a		)
@pytest.mark.parametrize("streaming"							,  [False, True]		)
@require_torch
@pytest.mark.skipif(os.name == "nt"							,  reason="execute_subprocess_async doesn't support windows"		)
@pytest.mark.integration
def 					a__ ( a :					str		):

  """simple docstring"""







  _snake_case  :    Union[str, Any]            = 2
  _snake_case  :    Union[str, Any]            = get_torch_dist_unique_port()
  _snake_case  :    Union[str, Any]            = Path(a		).resolve().parent / "distributed_scripts" / "launch_torch_distributed.py"
  _snake_case  :    Tuple            = f'\n        -m torch.distributed.launch\n        --nproc_per_node={nproc_per_node}\n        --master_port={master_port}\n        {test_script}\n    '.split()
  _snake_case  :    Tuple            = f'\n        --streaming={streaming}\n    '.split()
  _snake_case  :    str            = [sys.executable] + distributed_args + args
  execute_subprocess_async(a							,  env=os.environ.copy()		)



@pytest.mark.parametrize(
    "nproc_per_node, num_workers"							,  [
        (2, 2),  # each node has 2 shards and each worker has 1 shards
        (3, 2),  # each node uses all the shards but skips examples, and each worker has 2 shards
    ]							,  )
@require_torch
@pytest.mark.skipif(os.name == "nt"							,  reason="execute_subprocess_async doesn't support windows"		)
@pytest.mark.integration
def 					a__ ( a :					Optional[int]							,  a :					int		):

  """simple docstring"""







  _snake_case  :    Tuple            = True
  _snake_case  :    Union[str, Any]            = get_torch_dist_unique_port()
  _snake_case  :    List[str]            = Path(a		).resolve().parent / "distributed_scripts" / "launch_torch_distributed.py"
  _snake_case  :    Union[str, Any]            = f'\n        -m torch.distributed.launch\n        --nproc_per_node={nproc_per_node}\n        --master_port={master_port}\n        {test_script}\n    '.split()
  _snake_case  :    Tuple            = f'\n        --streaming={streaming}\n        --num_workers={num_workers}\n    '.split()
  _snake_case  :    List[str]            = [sys.executable] + distributed_args + args
  execute_subprocess_async(a							,  env=os.environ.copy()		)







import math
from timeit import timeit





def 							lowerCamelCase    (							UpperCAmelCase_	:      int      )->			int:

       """simple docstring"""




       a			   =0
       a			   =abs(UpperCAmelCase_      )
       while True:
              a			   =n // 10
              digits += 1
              if n == 0:
                     break
       return digits





def 							lowerCamelCase    (							UpperCAmelCase_	:      int      )->			int:

       """simple docstring"""




       return 1 if n == 0 else math.floor(math.log(abs(UpperCAmelCase_      )   ,       10      ) + 1      )





def 							lowerCamelCase    (							UpperCAmelCase_	:      int      )->			int:

       """simple docstring"""




       return len(str(abs(UpperCAmelCase_      )      )      )





def 							lowerCamelCase    (							)->			None:

       """simple docstring"""




       from collections.abc import Callable

       def benchmark_a_function(UpperCAmelCase_	:      Callable   ,       UpperCAmelCase_	:      int      ) -> None:
              a			   =F'''{func.__name__}({value})'''
              a			   =timeit(F'''__main__.{call}'''   ,       setup="""import __main__"""      )
              print(F'''{call}: {func(UpperCAmelCase_      )} -- {timing} seconds'''      )

       for value in (26_2144, 1125_8999_0684_2624, 126_7650_6002_2822_9401_4967_0320_5376):
              for func in (num_digits, num_digits_fast, num_digits_faster):
                     benchmark_a_function(UpperCAmelCase_   ,       UpperCAmelCase_      )
              print()


if __name__ == "__main__":
    import doctest

    doctest.testmod()
    benchmark()
