



import math
import os
from copy import deepcopy

import datasets
import evaluate
import torch
import transformers
from datasets import load_dataset
from torch.utils.data import DataLoader
from transformers import AutoModelForSequenceClassification, AutoTokenizer

from accelerate import Accelerator
from accelerate.test_utils import RegressionDataset, RegressionModel
from accelerate.utils import is_tpu_available, set_seed


a_			=					"""true"""





def 		a__			(		_UpperCamelCase			: Union[str, Any] ,_UpperCamelCase			: List[str]=82 ,_UpperCamelCase			: Optional[Any]=16							):
   set_seed(42							)
   __lowerCamelCase													=    RegressionModel()
   __lowerCamelCase													=    deepcopy(_UpperCamelCase							)
   __lowerCamelCase													=    RegressionDataset(length=_UpperCamelCase							)
   __lowerCamelCase													=    DataLoader(_UpperCamelCase ,batch_size=_UpperCamelCase							)
   model.to(accelerator.device							)
   __lowerCamelCase							,__lowerCamelCase													=    accelerator.prepare(_UpperCamelCase ,_UpperCamelCase							)
   return model, ddp_model, dataloader





def 		a__			(		_UpperCamelCase			: Accelerator ,_UpperCamelCase			: str=False							):
   __lowerCamelCase													=    AutoTokenizer.from_pretrained('''hf-internal-testing/mrpc-bert-base-cased'''							)
   __lowerCamelCase													=    load_dataset('''glue''' ,'''mrpc''' ,split='''validation'''							)

   def tokenize_function(_UpperCamelCase			: int							):
      __lowerCamelCase													=    tokenizer(examples['''sentence1'''] ,examples['''sentence2'''] ,truncation=_UpperCamelCase ,max_length=_UpperCamelCase							)
      return outputs

   with accelerator.main_process_first():
      __lowerCamelCase													=    dataset.map(
          _UpperCamelCase ,batched=_UpperCamelCase ,remove_columns=['''idx''', '''sentence1''', '''sentence2'''] ,)

   __lowerCamelCase													=    tokenized_datasets.rename_column('''label''' ,'''labels'''							)

   def collate_fn(_UpperCamelCase			: Any							):
      if use_longest:
         return tokenizer.pad(_UpperCamelCase ,padding='''longest''' ,return_tensors='''pt'''							)
      return tokenizer.pad(_UpperCamelCase ,padding='''max_length''' ,max_length=1_28 ,return_tensors='''pt'''							)

   return DataLoader(_UpperCamelCase ,shuffle=_UpperCamelCase ,collate_fn=_UpperCamelCase ,batch_size=16							)





def 		a__			(		_UpperCamelCase			: Dict ,_UpperCamelCase			: List[str]							):
   __lowerCamelCase													=    Accelerator(dispatch_batches=_UpperCamelCase ,split_batches=_UpperCamelCase							)
   __lowerCamelCase													=    get_dataloader(_UpperCamelCase ,not dispatch_batches							)
   __lowerCamelCase													=    AutoModelForSequenceClassification.from_pretrained(
       '''hf-internal-testing/mrpc-bert-base-cased''' ,return_dict=_UpperCamelCase							)
   __lowerCamelCase							,__lowerCamelCase													=    accelerator.prepare(_UpperCamelCase ,_UpperCamelCase							)
   return {"ddp": [ddp_model, ddp_dataloader, "cuda:0"], "no": [model, dataloader, accelerator.device]}, accelerator





def 		a__			(		_UpperCamelCase			: Dict ,_UpperCamelCase			: Optional[Any] ,_UpperCamelCase			: Union[str, Any]							):
   __lowerCamelCase													=    []
   for batch in dataloader:
      __lowerCamelCase							,__lowerCamelCase													=    batch.values()
      with torch.no_grad():
         __lowerCamelCase													=    model(_UpperCamelCase							)
         __lowerCamelCase							,__lowerCamelCase													=    accelerator.gather_for_metrics((logit, target)							)
         logits_and_targets.append((logit, target)							)
   __lowerCamelCase							,__lowerCamelCase													=    [], []
   for logit, targ in logits_and_targets:
      logits.append(_UpperCamelCase							)
      targs.append(_UpperCamelCase							)
   __lowerCamelCase							,__lowerCamelCase													=    torch.cat(_UpperCamelCase							), torch.cat(_UpperCamelCase							)
   return logits, targs





def 		a__			(		_UpperCamelCase			: Accelerator ,_UpperCamelCase			: List[Any]=82 ,_UpperCamelCase			: str=False ,_UpperCamelCase			: List[str]=False ,_UpperCamelCase			: Optional[int]=16							):
   __lowerCamelCase							,__lowerCamelCase							,__lowerCamelCase													=    get_basic_setup(_UpperCamelCase ,_UpperCamelCase ,_UpperCamelCase							)
   __lowerCamelCase							,__lowerCamelCase													=    generate_predictions(_UpperCamelCase ,_UpperCamelCase ,_UpperCamelCase							)
   assert (
       len(_UpperCamelCase							) == num_samples
   ), F"""Unexpected number of inputs:\n    Expected: {num_samples}\n    Actual: {len(_UpperCamelCase							)}"""





def 		a__			(		_UpperCamelCase			: bool = False ,_UpperCamelCase			: bool = False							):
   __lowerCamelCase													=    evaluate.load('''glue''' ,'''mrpc'''							)
   __lowerCamelCase							,__lowerCamelCase													=    get_mrpc_setup(_UpperCamelCase ,_UpperCamelCase							)
   # First do baseline
   __lowerCamelCase							,__lowerCamelCase							,__lowerCamelCase													=    setup['''no''']
   model.to(_UpperCamelCase							)
   model.eval()
   for batch in dataloader:
      batch.to(_UpperCamelCase							)
      with torch.inference_mode():
         __lowerCamelCase													=    model(**_UpperCamelCase							)
      __lowerCamelCase													=    outputs.logits.argmax(dim=-1							)
      metric.add_batch(predictions=_UpperCamelCase ,references=batch['''labels''']							)
   __lowerCamelCase													=    metric.compute()

   # Then do distributed
   __lowerCamelCase							,__lowerCamelCase							,__lowerCamelCase													=    setup['''ddp''']
   model.eval()
   for batch in dataloader:
      with torch.inference_mode():
         __lowerCamelCase													=    model(**_UpperCamelCase							)
      __lowerCamelCase													=    outputs.logits.argmax(dim=-1							)
      __lowerCamelCase													=    batch['''labels''']
      __lowerCamelCase							,__lowerCamelCase													=    accelerator.gather_for_metrics((preds, references)							)
      metric.add_batch(predictions=_UpperCamelCase ,references=_UpperCamelCase							)
   __lowerCamelCase													=    metric.compute()

   for key in "accuracy f1".split():
      assert math.isclose(
          baseline[key] ,distributed[key]							), F"""Baseline and Distributed are not the same for key {key}:\n\tBaseline: {baseline[key]}\n\tDistributed: {distributed[key]}\n"""





def 		a__			(		):
   __lowerCamelCase													=    Accelerator(split_batches=_UpperCamelCase ,dispatch_batches=_UpperCamelCase							)
   if accelerator.is_local_main_process:
      datasets.utils.logging.set_verbosity_warning()
      transformers.utils.logging.set_verbosity_warning()
   else:
      datasets.utils.logging.set_verbosity_error()
      transformers.utils.logging.set_verbosity_error()
   # These are a bit slower so they should only be ran on the GPU or TPU
   if torch.cuda.is_available() or is_tpu_available():
      if accelerator.is_local_main_process:
         print('''**Testing gather_for_metrics**'''							)
      for split_batches in [True, False]:
         for dispatch_batches in [True, False]:
            if accelerator.is_local_main_process:
               print(F"""With: `split_batches={split_batches}`, `dispatch_batches={dispatch_batches}`"""							)
            test_mrpc(_UpperCamelCase ,_UpperCamelCase							)
            accelerator.state._reset_state()
   if accelerator.is_local_main_process:
      print('''**Test torch metrics**'''							)
   for split_batches in [True, False]:
      for dispatch_batches in [True, False]:
         __lowerCamelCase													=    Accelerator(split_batches=_UpperCamelCase ,dispatch_batches=_UpperCamelCase							)
         if accelerator.is_local_main_process:
            print(F"""With: `split_batches={split_batches}`, `dispatch_batches={dispatch_batches}`, length=99"""							)
         test_torch_metrics(_UpperCamelCase ,99							)
         accelerator.state._reset_state()
   if accelerator.is_local_main_process:
      print('''**Test last batch is not dropped when perfectly divisible**'''							)
   __lowerCamelCase													=    Accelerator()
   test_torch_metrics(_UpperCamelCase ,5_12							)
   accelerator.state._reset_state()





def 		a__			(		_UpperCamelCase			: Optional[int]							):
   # For xla_spawn (TPUs)
   main()


if __name__ == "__main__":
  main()











import logging

import torch
from accelerate import Accelerator
from arguments import EvaluationArguments
from datasets import load_dataset
from torch.utils.data import IterableDataset
from torch.utils.data.dataloader import DataLoader

from transformers import AutoModelForCausalLM, AutoTokenizer, HfArgumentParser, set_seed



class  __lowerCAmelCase     (	lowerCAmelCase__   ):




 def __init__(						self	,				__UpperCAmelCase	,				__UpperCAmelCase	,				__UpperCAmelCase=1024	,				__UpperCAmelCase=1024	,				__UpperCAmelCase=3.6				):



    '''simple docstring'''
    __lowerCamelCase													=    tokenizer
    __lowerCamelCase													=    tokenizer.bos_token_id
    __lowerCamelCase													=    dataset
    __lowerCamelCase													=    seq_length
    __lowerCamelCase													=    seq_length * chars_per_token * num_of_sequences




 def __iter__(						self				):



    '''simple docstring'''
    __lowerCamelCase													=    iter(self.dataset				)
    __lowerCamelCase													=    True
    while more_examples:
       __lowerCamelCase							,__lowerCamelCase													=    [], 0
       while True:
          if buffer_len >= self.input_characters:
             break
          try:
             buffer.append(next(__UpperCAmelCase				)['''content''']				)
             buffer_len += len(buffer[-1]				)
          except StopIteration:
             __lowerCamelCase													=    False
             break
       __lowerCamelCase													=    tokenizer(__UpperCAmelCase	,				truncation=__UpperCAmelCase				)['''input_ids''']
       __lowerCamelCase													=    []
       for tokenized_input in tokenized_inputs:
          all_token_ids.extend(tokenized_input + [self.concat_token_id]				)
       for i in range(0	,				len(__UpperCAmelCase				)	,				self.seq_length				):
          __lowerCamelCase													=    all_token_ids[i : i + self.seq_length]
          if len(__UpperCAmelCase				) == self.seq_length:
             yield torch.tensor(__UpperCAmelCase				)





def 		a__			(		_UpperCamelCase			: List[Any]							):
   __lowerCamelCase													=    {'''streaming''': True}
   __lowerCamelCase													=    load_dataset(args.dataset_name ,split='''train''' ,**_UpperCamelCase							)
   __lowerCamelCase													=    ConstantLengthDataset(_UpperCamelCase ,_UpperCamelCase ,seq_length=args.seq_length							)
   __lowerCamelCase													=    DataLoader(_UpperCamelCase ,batch_size=args.batch_size							)
   return eval_dataloader





def 		a__			(		_UpperCamelCase			: str							):
   model.eval()
   __lowerCamelCase													=    []
   for step, batch in enumerate(_UpperCamelCase							):
      with torch.no_grad():
         __lowerCamelCase													=    model(_UpperCamelCase ,labels=_UpperCamelCase							)
      __lowerCamelCase													=    outputs.loss.repeat(args.batch_size							)
      losses.append(accelerator.gather(_UpperCamelCase							)							)

      if args.max_eval_steps > 0 and step >= args.max_eval_steps:
         break
   __lowerCamelCase													=    torch.mean(torch.cat(_UpperCamelCase							)							)
   try:
      __lowerCamelCase													=    torch.exp(_UpperCamelCase							)
   except OverflowError:
      __lowerCamelCase													=    float('''inf'''							)
   return loss.item(), perplexity.item()


# Setup Accelerator
a_			=					Accelerator()

# Parse configuration
a_			=					HfArgumentParser(EvaluationArguments)
a_			=					parser.parse_args()
set_seed(args.seed)

# Logging
a_			=					logging.getLogger(__name__)
logging.basicConfig(
    format="""%(asctime)s - %(levelname)s - %(name)s - %(message)s""", datefmt="""%m/%d/%Y %H:%M:%S""", level=logging.INFO
)

# Load model and tokenizer
a_			=					AutoModelForCausalLM.from_pretrained(args.model_ckpt)
a_			=					AutoTokenizer.from_pretrained(args.model_ckpt)

# Load dataset and dataloader
a_			=					create_dataloader(args)

# Prepare everything with our `accelerator`.
a_		,						a_			=					accelerator.prepare(model, eval_dataloader)

# Evaluate and save the last checkpoint
logger.info("""Evaluating and saving model after training""")
a_		,						a_			=					evaluate(args)





logger.info(f"loss/eval: {eval_loss}, perplexity: {perplexity}")






