





'''simple docstring'''

import argparse
import os

import evaluate
import torch
from datasets import load_dataset
from torch.optim import AdamW
from torch.utils.data import DataLoader
from transformers import AutoModelForSequenceClassification, AutoTokenizer, get_linear_schedule_with_warmup, set_seed

from accelerate import Accelerator, DistributedType


########################################################################
# This is a fully working simple example to use Accelerate,
# specifically showcasing the experiment tracking capability,
# and builds off the `nlp_example.py` script.
#
# This example trains a Bert base model on GLUE MRPC
# in any of the following settings (with the same script):
#   - single CPU or single GPU
#   - multi GPUS (using PyTorch distributed mode)
#   - (multi) TPUs
#   - fp16 (mixed-precision) or fp32 (normal precision)
#
# To help focus on the differences in the code, building `DataLoaders`
# was refactored into its own function.
# New additions from the base script can be found quickly by
# looking for the # New Code # tags
#
# To run it in each of these various modes, follow the instructions
# in the readme for examples:
# https://github.com/huggingface/accelerate/tree/main/examples
#
########################################################################

__lowerCAmelCase							:	List[Any]			=16
__lowerCAmelCase							:	Any			=32





def 						UpperCamelCase				(							_lowerCamelCase					:					Accelerator						,       _lowerCamelCase					:					int = 16       ):
    A__				=			AutoTokenizer.from_pretrained("bert-base-cased"       )
    A__				=			load_dataset("glue"						,       "mrpc"       )

    def tokenize_function(_lowerCamelCase					:					Any       ):
        # max_length=None => use the model max length (it's actually the default)
        A__				=			tokenizer(examples["sentence1"]						,       examples["sentence2"]						,       truncation=_lowerCamelCase						,       max_length=_lowerCamelCase       )
        return outputs

    # Apply the method we just defined to all the examples in all the splits of the dataset
    # starting with the main process first:
    with accelerator.main_process_first():
        A__				=			datasets.map(
            _lowerCamelCase						,       batched=_lowerCamelCase						,       remove_columns=["idx", "sentence1", "sentence2"]						,       )

    # We also rename the 'label' column to 'labels' which is the expected name for labels by the models of the
    # transformers library
    A__				=			tokenized_datasets.rename_column("label"						,       "labels"       )

    def collate_fn(_lowerCamelCase					:					List[str]       ):
        # On TPU it's best to pad everything to the same length or training will be very slow.
        A__				=			1_28 if accelerator.distributed_type == DistributedType.TPU else None
        # When using mixed precision we want round multiples of 8/16
        if accelerator.mixed_precision == "fp8":
            A__				=			16
        elif accelerator.mixed_precision != "no":
            A__				=			8
        else:
            A__				=			None

        return tokenizer.pad(
            _lowerCamelCase						,       padding="longest"						,       max_length=_lowerCamelCase						,       pad_to_multiple_of=_lowerCamelCase						,       return_tensors="pt"						,       )

    # Instantiate dataloaders.
    A__				=			DataLoader(
        tokenized_datasets["train"]						,       shuffle=_lowerCamelCase						,       collate_fn=_lowerCamelCase						,       batch_size=_lowerCamelCase       )
    A__				=			DataLoader(
        tokenized_datasets["validation"]						,       shuffle=_lowerCamelCase						,       collate_fn=_lowerCamelCase						,       batch_size=_lowerCamelCase       )

    return train_dataloader, eval_dataloader


# For testing only
if os.environ.get("TESTING_MOCKED_DATALOADERS", None) == "1":
  from accelerate.test_utils.training import mocked_dataloaders

  __lowerCAmelCase							:	List[Any]			=mocked_dataloaders  # noqa: F811





def 						UpperCamelCase				(							_lowerCamelCase					:					Optional[int]						,       _lowerCamelCase					:					int       ):
    # For testing only
    if os.environ.get("TESTING_MOCKED_DATALOADERS"						,       _lowerCamelCase       ) == "1":
        A__				=			2
    # Initialize Accelerator

    # New Code #
    # We pass in "all" to `log_with` to grab all available trackers in the environment
    # Note: If using a custom `Tracker` class, should be passed in here such as:
    # >>> log_with = ["all", MyCustomTrackerClassInstance()]
    if args.with_tracking:
        A__				=			Accelerator(
            cpu=args.cpu						,       mixed_precision=args.mixed_precision						,       log_with="all"						,       project_dir=args.project_dir       )
    else:
        A__				=			Accelerator(cpu=args.cpu						,       mixed_precision=args.mixed_precision       )
    # Sample hyper-parameters for learning rate, batch size, seed and a few other HPs
    A__				=			config["lr"]
    A__				=			int(config["num_epochs"]       )
    A__				=			int(config["seed"]       )
    A__				=			int(config["batch_size"]       )
    set_seed(_lowerCamelCase       )

    A__,	A__				=			get_dataloaders(_lowerCamelCase						,       _lowerCamelCase       )
    A__				=			evaluate.load("glue"						,       "mrpc"       )

    # If the batch size is too big we use gradient accumulation
    A__				=			1
    if batch_size > MAX_GPU_BATCH_SIZE and accelerator.distributed_type != DistributedType.TPU:
        A__				=			batch_size // MAX_GPU_BATCH_SIZE
        A__				=			MAX_GPU_BATCH_SIZE

    # Instantiate the model (we build the model here so that the seed also control new weights initialization)
    A__				=			AutoModelForSequenceClassification.from_pretrained("bert-base-cased"						,       return_dict=_lowerCamelCase       )

    # We could avoid this line since the accelerator is set with `device_placement=True` (default value).
    # Note that if you are placing tensors on devices manually, this line absolutely needs to be before the optimizer
    # creation otherwise training will not work on TPU (`accelerate` will kindly throw an error to make us aware of that).
    A__				=			model.to(accelerator.device       )

    # Instantiate optimizer
    A__				=			AdamW(params=model.parameters()						,       lr=_lowerCamelCase       )

    # Instantiate scheduler
    A__				=			get_linear_schedule_with_warmup(
        optimizer=_lowerCamelCase						,       num_warmup_steps=1_00						,       num_training_steps=(len(_lowerCamelCase       ) * num_epochs) // gradient_accumulation_steps						,       )

    # Prepare everything
    # There is no specific order to remember, we just need to unpack the objects in the same order we gave them to the
    # prepare method.
    A__,	A__,	A__,	A__,	A__				=			accelerator.prepare(
        _lowerCamelCase						,       _lowerCamelCase						,       _lowerCamelCase						,       _lowerCamelCase						,       _lowerCamelCase       )

    # New Code #
    # We need to initialize the trackers we use. Overall configurations can also be stored
    if args.with_tracking:
        A__				=			os.path.split(_lowerCamelCase       )[-1].split("."       )[0]
        accelerator.init_trackers(_lowerCamelCase						,       _lowerCamelCase       )

    # Now we train the model
    for epoch in range(_lowerCamelCase       ):
        model.train()
        # New Code #
        # For our tracking example, we will log the total loss of each epoch
        if args.with_tracking:
            A__				=			0
        for step, batch in enumerate(_lowerCamelCase       ):
            # We could avoid this line since we set the accelerator with `device_placement=True`.
            batch.to(accelerator.device       )
            A__				=			model(**_lowerCamelCase       )
            A__				=			outputs.loss
            # New Code #
            if args.with_tracking:
                total_loss += loss.detach().float()
            A__				=			loss / gradient_accumulation_steps
            accelerator.backward(_lowerCamelCase       )
            if step % gradient_accumulation_steps == 0:
                optimizer.step()
                lr_scheduler.step()
                optimizer.zero_grad()

        model.eval()
        for step, batch in enumerate(_lowerCamelCase       ):
            # We could avoid this line since we set the accelerator with `device_placement=True` (the default).
            batch.to(accelerator.device       )
            with torch.no_grad():
                A__				=			model(**_lowerCamelCase       )
            A__				=			outputs.logits.argmax(dim=-1       )
            A__,	A__				=			accelerator.gather_for_metrics((predictions, batch["labels"])       )
            metric.add_batch(
                predictions=_lowerCamelCase						,       references=_lowerCamelCase						,       )

        A__				=			metric.compute()
        # Use accelerator.print to print only on the main process.
        accelerator.print(F"epoch {epoch}:"						,       _lowerCamelCase       )

        # New Code #
        # To actually log, we call `Accelerator.log`
        # The values passed can be of `str`, `int`, `float` or `dict` of `str` to `float`/`int`
        if args.with_tracking:
            accelerator.log(
                {
                    "accuracy": eval_metric["accuracy"],
                    "f1": eval_metric["f1"],
                    "train_loss": total_loss.item() / len(_lowerCamelCase       ),
                    "epoch": epoch,
                }						,       step=_lowerCamelCase						,       )

    # New Code #
    # When a run is finished, you should call `accelerator.end_training()`
    # to close all of the open trackers
    if args.with_tracking:
        accelerator.end_training()





def 						UpperCamelCase				(							):
    A__				=			argparse.ArgumentParser(description="Simple example of training script."       )
    parser.add_argument(
        "--mixed_precision"						,       type=_lowerCamelCase						,       default=_lowerCamelCase						,       choices=["no", "fp16", "bf16", "fp8"]						,       help="Whether to use mixed precision. Choose"
        "between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >= 1.10."
        "and an Nvidia Ampere GPU."						,       )
    parser.add_argument("--cpu"						,       action="store_true"						,       help="If passed, will train on the CPU."       )
    parser.add_argument(
        "--with_tracking"						,       action="store_true"						,       help="Whether to load in all available experiment trackers from the environment and use them for logging."						,       )
    parser.add_argument(
        "--project_dir"						,       type=_lowerCamelCase						,       default="logs"						,       help="Location on where to store experiment tracking logs` and relevent project information"						,       )
    A__				=			parser.parse_args()
    A__				=			{"lr": 2e-5, "num_epochs": 3, "seed": 42, "batch_size": 16}
    training_function(_lowerCamelCase						,       _lowerCamelCase       )


if __name__ == "__main__":
  main()










'''simple docstring'''

from .integrations import (
    is_optuna_available,
    is_ray_available,
    is_sigopt_available,
    is_wandb_available,
    run_hp_search_optuna,
    run_hp_search_ray,
    run_hp_search_sigopt,
    run_hp_search_wandb,
)
from .trainer_utils import (
    HPSearchBackend,
    default_hp_space_optuna,
    default_hp_space_ray,
    default_hp_space_sigopt,
    default_hp_space_wandb,
)
from .utils import logging


__lowerCAmelCase							:	Optional[Any]			=logging.get_logger(__name__)






class    UpperCAmelCase	:
 __lowercase   		=				42
 __lowercase   		=				None
 @staticmethod
 def      UpperCAmelCase_							(				)->							Dict:
     raise NotImplementedError
 def      UpperCAmelCase_							(				self      :List[Any]						,       lowercase_      :str						,       lowercase_      :int						,       lowercase_      :str						,       **lowercase_      :Dict							)->							str:
     raise NotImplementedError
 def      UpperCAmelCase_							(				self      :Optional[int]						,       lowercase_      :int							)->							Any:
     raise NotImplementedError
 def      UpperCAmelCase_							(				self      :List[Any]							)->							Optional[Any]:
     if not self.is_available():
         raise RuntimeError(
             F"You picked the {self.name} backend, but it is not installed. Run {self.pip_install()}."							)



 @classmethod
 def      UpperCAmelCase_							(				cls      :int							)->							Any:
     return F"`pip install {cls.pip_package or cls.name}`"






class    UpperCAmelCase	(       UpperCamelCase__				):
 __lowercase   		=				"""optuna"""
 @staticmethod
 def      UpperCAmelCase_							(				)->							int:
     return is_optuna_available()
 def      UpperCAmelCase_							(				self      :List[str]						,       lowercase_      :str						,       lowercase_      :int						,       lowercase_      :str						,       **lowercase_      :List[Any]							)->							Tuple:
     return run_hp_search_optuna(lowercase_						,       lowercase_						,       lowercase_						,       **lowercase_							)



 def      UpperCAmelCase_							(				self      :str						,       lowercase_      :Optional[int]							)->							Optional[Any]:
     return default_hp_space_optuna(lowercase_							)






class    UpperCAmelCase	(       UpperCamelCase__				):
 __lowercase   		=				"""ray"""
 __lowercase   		=				"""'ray[tune]'"""
 @staticmethod
 def      UpperCAmelCase_							(				)->							str:
     return is_ray_available()
 def      UpperCAmelCase_							(				self      :int						,       lowercase_      :Dict						,       lowercase_      :int						,       lowercase_      :str						,       **lowercase_      :List[str]							)->							int:
     return run_hp_search_ray(lowercase_						,       lowercase_						,       lowercase_						,       **lowercase_							)



 def      UpperCAmelCase_							(				self      :Optional[int]						,       lowercase_      :Dict							)->							int:
     return default_hp_space_ray(lowercase_							)






class    UpperCAmelCase	(       UpperCamelCase__				):
 __lowercase   		=				"""sigopt"""
 @staticmethod
 def      UpperCAmelCase_							(				)->							Union[str, Any]:
     return is_sigopt_available()
 def      UpperCAmelCase_							(				self      :Any						,       lowercase_      :Union[str, Any]						,       lowercase_      :int						,       lowercase_      :str						,       **lowercase_      :Dict							)->							Dict:
     return run_hp_search_sigopt(lowercase_						,       lowercase_						,       lowercase_						,       **lowercase_							)



 def      UpperCAmelCase_							(				self      :Optional[int]						,       lowercase_      :Optional[int]							)->							List[str]:
     return default_hp_space_sigopt(lowercase_							)






class    UpperCAmelCase	(       UpperCamelCase__				):
 __lowercase   		=				"""wandb"""
 @staticmethod
 def      UpperCAmelCase_							(				)->							List[str]:
     return is_wandb_available()
 def      UpperCAmelCase_							(				self      :Dict						,       lowercase_      :Optional[Any]						,       lowercase_      :int						,       lowercase_      :str						,       **lowercase_      :Dict							)->							List[str]:
     return run_hp_search_wandb(lowercase_						,       lowercase_						,       lowercase_						,       **lowercase_							)



 def      UpperCAmelCase_							(				self      :Union[str, Any]						,       lowercase_      :str							)->							Dict:
     return default_hp_space_wandb(lowercase_							)

__lowerCAmelCase							:	int			={
    HPSearchBackend(backend.name): backend for backend in [OptunaBackend, RayTuneBackend, SigOptBackend, WandbBackend]
}





def 						UpperCamelCase				(							):
    A__				=			[backend for backend in ALL_HYPERPARAMETER_SEARCH_BACKENDS.values() if backend.is_available()]
    if len(_lowerCamelCase       ) > 0:
        A__				=			available_backends[0].name
        if len(_lowerCamelCase       ) > 1:
            logger.info(
                F"{len(_lowerCamelCase       )} hyperparameter search backends available. Using {name} as the default."       )
        return name
    raise RuntimeError(
        "No hyperparameter search backend available.\n"
        + "\n".join(
            F" - To install {backend.name} run {backend.pip_install()}"
            for backend in ALL_HYPERPARAMETER_SEARCH_BACKENDS.values()       )       )



