'''simple docstring'''


import logging
import os
import time
from argparse import Namespace
from pathlib import Path

import datasets
import torch
from accelerate import Accelerator, DistributedType
from accelerate.utils import ProjectConfiguration
from arguments import TrainingArguments
from datasets import load_dataset
from huggingface_hub import Repository
from torch.optim import AdamW
from torch.utils.data import IterableDataset
from torch.utils.data.dataloader import DataLoader
from torch.utils.data.datapipes.iter.combinatorics import ShufflerIterDataPipe

import transformers
from transformers import AutoModelForCausalLM, AutoTokenizer, HfArgumentParser, get_scheduler, set_seed






class 	__SCREAMING_SNAKE_CASE		(			lowerCamelCase_			):







  '''simple docstring'''






  def __init__(					self ,						snake_case_ ,						snake_case_ ,						snake_case_=False ,						snake_case_=1_0_2_4 ,						snake_case_=1_0_2_4 ,						snake_case_=3.6 ,						snake_case_=False ,						):




       '''simple docstring'''

       UpperCAmelCase_				:  List[str]  = tokenizer
       UpperCAmelCase_				:  Any  = tokenizer.bos_token_id
       UpperCAmelCase_				:  int  = dataset
       UpperCAmelCase_				:  Optional[Any]  = seq_length
       UpperCAmelCase_				:  Any  = 0
       UpperCAmelCase_				:  Any  = infinite
       UpperCAmelCase_				:  Optional[Any]  = 0
       UpperCAmelCase_				:  List[Any]  = tokenized

       if self.tokenized:
            UpperCAmelCase_				:  Optional[Any]  = seq_length * num_of_sequences
            UpperCAmelCase_				:  List[Any]  = 'input_ids'
       else:
            UpperCAmelCase_				:  Optional[Any]  = seq_length * chars_per_token * num_of_sequences
            UpperCAmelCase_				:  Optional[Any]  = 'content'


  def __iter__(					self		):




       '''simple docstring'''

       UpperCAmelCase_				:  Union[str, Any]  = iter(self.dataset		)
       UpperCAmelCase_				:  Optional[Any]  = True
       while more_examples:
            UpperCAmelCase_  ,     UpperCAmelCase_				:  Dict  = [], 0
            while True:
                 if buffer_len >= self.max_buffer_size:
                      break
                 try:
                      buffer.append(next(snake_case_		)[self.content_field]		)
                      buffer_len += len(buffer[-1]		)
                 except StopIteration:
                      if self.infinite:
                           UpperCAmelCase_				:  int  = iter(self.dataset		)
                           self.epoch += 1
                           logger.info(F'''Dataset epoch: {self.epoch}'''		)
                      else:
                           UpperCAmelCase_				:  Tuple  = False
                           break
            if self.tokenized:
                 UpperCAmelCase_				:  Union[str, Any]  = buffer
            else:
                 UpperCAmelCase_				:  Dict  = self.tokenizer(snake_case_ ,						truncation=snake_case_		)['input_ids']
            UpperCAmelCase_				:  str  = []
            for tokenized_input in tokenized_inputs:
                 all_token_ids.extend(tokenized_input + [self.concat_token_id]		)
            for i in range(0 ,						len(snake_case_		) ,						self.seq_length		):
                 UpperCAmelCase_				:  Tuple  = all_token_ids[i : i + self.seq_length]
                 if len(snake_case_		) == self.seq_length:
                      self.current_size += 1
                      yield torch.tensor(snake_case_		)






  def _UpperCamelCase	(					self ,						snake_case_=1_0_0_0		):




       '''simple docstring'''

       return ShufflerIterDataPipe(self ,						buffer_size=snake_case_		)







def    _lowerCamelCase       ( lowerCamelCase_   :				Union[str, Any]  ):



     """simple docstring"""





     UpperCAmelCase_				:  Optional[int]  = args.model_ckpt.split('/'  )[-1]
     UpperCAmelCase_				:  Dict  = logging.getLogger(__name__  )
     UpperCAmelCase_				:  List[Any]  = Path(args.save_dir  ) / 'log/'
     log_dir.mkdir(exist_ok=lowerCamelCase_  )
     UpperCAmelCase_				:  List[Any]  = F'''debug_{accelerator.process_index}.log'''
     logging.basicConfig(
         format='%(asctime)s - %(levelname)s - %(name)s - %(message)s'      ,	datefmt='%m/%d/%Y %H:%M:%S'      ,	level=logging.INFO      ,	handlers=[logging.FileHandler(log_dir / filename  ), logging.StreamHandler()]      ,	)
     if accelerator.is_main_process:  # we only want to setup logging once
          accelerator.init_trackers(lowerCamelCase_      ,	vars(lowerCamelCase_  )  )
          UpperCAmelCase_				:  int  = accelerator.trackers[0].run.name
          logger.setLevel(logging.INFO  )
          datasets.utils.logging.set_verbosity_info()
          transformers.utils.logging.set_verbosity_info()
     else:
          UpperCAmelCase_				:  int  = ''
          logger.setLevel(logging.ERROR  )
          datasets.utils.logging.set_verbosity_error()
          transformers.utils.logging.set_verbosity_error()
     return logger, run_name


def    _lowerCamelCase       ( lowerCamelCase_   :				str  ):



     """simple docstring"""





     UpperCAmelCase_				:  Optional[int]  = {'streaming': True}
     UpperCAmelCase_				:  Optional[int]  = load_dataset(args.dataset_name_train      ,	split='train'      ,	**lowerCamelCase_  )
     UpperCAmelCase_				:  int  = train_data.shuffle(buffer_size=args.shuffle_buffer      ,	seed=args.seed  )
     UpperCAmelCase_				:  Tuple  = load_dataset(args.dataset_name_valid      ,	split='train'      ,	**lowerCamelCase_  )
     UpperCAmelCase_				:  Tuple  = ConstantLengthDataset(
         lowerCamelCase_      ,	lowerCamelCase_      ,	infinite=lowerCamelCase_      ,	seq_length=args.seq_length      ,	tokenized=args.tokenized  )
     UpperCAmelCase_				:  Any  = ConstantLengthDataset(
         lowerCamelCase_      ,	lowerCamelCase_      ,	infinite=lowerCamelCase_      ,	seq_length=args.seq_length      ,	tokenized=args.tokenized  )
     UpperCAmelCase_				:  Optional[int]  = train_dataset.shuffle(buffer_size=args.shuffle_buffer  )
     UpperCAmelCase_				:  Optional[int]  = DataLoader(lowerCamelCase_      ,	batch_size=args.train_batch_size      ,	shuffle=lowerCamelCase_  )
     UpperCAmelCase_				:  Dict  = DataLoader(lowerCamelCase_      ,	batch_size=args.valid_batch_size  )
     return train_dataloader, eval_dataloader


def    _lowerCamelCase       ( lowerCamelCase_   :				List[Any]      ,	lowerCamelCase_   :				Tuple      ,	lowerCamelCase_   :				Dict=["bias", "ln_1.weight", "ln_2.weight", "ln_f.weight"]  ):



     """simple docstring"""





     UpperCAmelCase_  ,     UpperCAmelCase_				:  Dict  = [], []
     for n, p in model.named_parameters():
          if any(nd in n for nd in no_decay  ):
               params_without_wd.append(lowerCamelCase_  )
          else:
               params_with_wd.append(lowerCamelCase_  )
     return [
         {"params": params_with_wd, "weight_decay": args.weight_decay},
         {"params": params_without_wd, "weight_decay": 0.0},
     ]


def    _lowerCamelCase       ( lowerCamelCase_   :				Union[str, Any]      ,	lowerCamelCase_   :				Union[str, Any]  ):



     """simple docstring"""





     logger.info(F'''Step {step}: {metrics}'''  )
     if accelerator.is_main_process:
          accelerator.log(lowerCamelCase_      ,	lowerCamelCase_  )


def    _lowerCamelCase       ( lowerCamelCase_   :				int      ,	lowerCamelCase_   :				Dict      ,	lowerCamelCase_   :				List[str]  ):



     """simple docstring"""





     UpperCAmelCase_				:  Optional[int]  = accelerator.unwrap_model(lowerCamelCase_  ).config
     UpperCAmelCase_				:  Union[str, Any]  = 4 if args.gradient_checkpointing else 3
     UpperCAmelCase_				:  Dict  = args.train_batch_size * accelerator.state.num_processes * args.gradient_accumulation_steps
     UpperCAmelCase_				:  List[str]  = 24 * checkpoint_factor * batch_size * args.seq_length * config_model.n_layer * (config_model.n_embd**2)
     UpperCAmelCase_				:  int  = factor * (
         1.0
         + (args.seq_length / (6.0 * config_model.n_embd))
         + (tokenizer.vocab_size / (16.0 * config_model.n_layer * config_model.n_embd))
     )
     UpperCAmelCase_				:  Tuple  = flops_per_iteration / (elapsed_time * accelerator.state.num_processes * (10**12))
     return tflops


def    _lowerCamelCase       ( lowerCamelCase_   :				Dict  ):



     """simple docstring"""





     model.eval()
     UpperCAmelCase_				:  Dict  = []
     for step, batch in enumerate(lowerCamelCase_  ):
          with torch.no_grad():
               UpperCAmelCase_				:  str  = model(lowerCamelCase_      ,	labels=lowerCamelCase_  )
          UpperCAmelCase_				:  Any  = outputs.loss.repeat(args.valid_batch_size  )
          losses.append(accelerator.gather(lowerCamelCase_  )  )
          if args.max_eval_steps > 0 and step >= args.max_eval_steps:
               break
     UpperCAmelCase_				:  Union[str, Any]  = torch.cat(lowerCamelCase_  )
     UpperCAmelCase_				:  Optional[int]  = losses[: eval_dataloader.dataset.current_size].mean()
     try:
          UpperCAmelCase_				:  int  = torch.exp(lowerCamelCase_  )
     except OverflowError:
          UpperCAmelCase_				:  Any  = float('inf'  )
     return loss.item(), perplexity.item()


# Settings
snake_case__	:     str      =    HfArgumentParser(TrainingArguments)
snake_case__	:     List[Any]      =    parser.parse_args()

# Accelerator
snake_case__	:     int      =    ProjectConfiguration(project_dir=args.save_dir, logging_dir='''log''')
snake_case__	:     int      =    Accelerator(log_with=['''wandb''', '''tensorboard'''], project_config=config)
snake_case__	:     Tuple      =    {str(k): str(v) for k, v in accelerator.state.__dict__.items()}

snake_case__	:     Union[str, Any]      =    Namespace(**vars(args), **acc_state)
snake_case__	:     List[str]      =    accelerator.state.num_processes * args.train_batch_size
set_seed(args.seed)

# Clone model repository
if accelerator.is_main_process:
 snake_case__	:     int      =    Repository(args.save_dir, clone_from=args.model_ckpt)

# Logging
snake_case__     , snake_case__	:     int      =    setup_logging(args)
logger.info(accelerator.state)

# Checkout new branch on repo
if accelerator.is_main_process:
 hf_repo.git_checkout(run_name, create_branch_ok=True)

# Load model and tokenizer
snake_case__	:     Optional[int]      =    AutoModelForCausalLM.from_pretrained(args.save_dir)
if args.gradient_checkpointing:
 model.gradient_checkpointing_enable()
snake_case__	:     Any      =    AutoTokenizer.from_pretrained(args.save_dir)

# Load dataset and dataloader
snake_case__     , snake_case__	:     Tuple      =    create_dataloaders(args)

# Prepare the optimizer and learning rate scheduler
snake_case__	:     str      =    AdamW(get_grouped_params(model, args), lr=args.learning_rate)
snake_case__	:     Union[str, Any]      =    get_scheduler(
    name=args.lr_scheduler_type,
    optimizer=optimizer,
    num_warmup_steps=args.num_warmup_steps,
    num_training_steps=args.max_train_steps,
)
accelerator.register_for_checkpointing(lr_scheduler)


def    _lowerCamelCase       ( ):



     """simple docstring"""





     return optimizer.param_groups[0]["lr"]


# Prepare everything with our `accelerator`.
snake_case__     , snake_case__     , snake_case__     , snake_case__	:     Optional[Any]      =    accelerator.prepare(
    model, optimizer, train_dataloader, eval_dataloader
)

# load in the weights and states from a previous save
if args.resume_from_checkpoint:
 if args.resume_from_checkpoint is not None or args.resume_from_checkpoint != "":
  accelerator.print(f'''Resumed from checkpoint: {args.resume_from_checkpoint}''')
  accelerator.load_state(args.resume_from_checkpoint)
  snake_case__	:     List[str]      =    os.path.basename(args.resume_from_checkpoint)
 else:
  # Get the most recent checkpoint
  snake_case__	:     Any      =    [f.name for f in os.scandir(args.save_dir) if f.is_dir() and '''step''' in str(f)]
  dirs.sort(key=os.path.getctime)
  snake_case__	:     Any      =    dirs[-1]  # Sorts folders by date modified, most recent checkpoint is the last
 # Extract the step of the checkpoint to continue from there
 snake_case__	:     List[Any]      =    os.path.splitext(path)[0]
 snake_case__	:     List[Any]      =    int(training_difference.replace('''step_''', ''''''))

# Train model
model.train()
snake_case__	:     List[str]      =    0
snake_case__	:     Union[str, Any]      =    time.time()
snake_case__	:     int      =    0
for step, batch in enumerate(train_dataloader, start=1):
 if args.resume_from_checkpoint and step < resume_step:
  continue  # we need to skip steps until we reach the resumed step
 snake_case__	:     Tuple      =    model(batch, labels=batch, use_cache=False).loss
 snake_case__	:     Optional[int]      =    accelerator.gather(loss.repeat(args.train_batch_size)).mean()
 loss_tracking += avg_loss.item() / args.gradient_accumulation_steps
 log_metrics(step, {'''samples''': step * samples_per_step, '''loss_per_step/train''': loss.item()})
 snake_case__	:     str      =    loss / args.gradient_accumulation_steps
 if step % args.gradient_accumulation_steps != 0:
  # Prevent backward from doing gradient all_reduce in every step
  if accelerator.distributed_type == DistributedType.MULTI_GPU:
   with model.no_sync():
    accelerator.backward(loss)
  else:
   accelerator.backward(loss)
 else:
  snake_case__	:     Tuple      =    get_lr()
  accelerator.backward(loss)
  accelerator.clip_grad_norm_(model.parameters(), 1.0)
  optimizer.step()
  lr_scheduler.step()
  optimizer.zero_grad()
  snake_case__	:     Tuple      =    time.time() - t_start
  snake_case__	:     Any      =    compute_tflops(elapsed_time, accelerator, args)
  log_metrics(
      step,
      {
          '''steps''': completed_steps,
          '''loss/train''': loss_tracking,
          '''lr''': lr,
          '''tflops''': tflops,
          '''time_per_iteration''': elapsed_time,
      },
  )
  snake_case__	:     Dict      =    time.time()
  snake_case__	:     str      =    0
  completed_steps += 1
 if step % args.save_checkpoint_steps == 0:
  logger.info('''Evaluating and saving model checkpoint''')
  snake_case__     , snake_case__	:     int      =    evaluate(args)
  log_metrics(step, {'''loss/eval''': eval_loss, '''perplexity''': perplexity})
  accelerator.wait_for_everyone()
  snake_case__	:     Dict      =    os.path.join(args.save_dir, f'''step_{step}''')
  accelerator.save_state(save_dir)
  if accelerator.is_main_process:
   hf_repo.push_to_hub(commit_message=f'''step {step}''')
  model.train()
 if completed_steps >= args.max_train_steps:
  break

# Evaluate and save the last checkpoint
logger.info('''Evaluating and saving model after training''')
snake_case__     , snake_case__	:     int      =    evaluate(args)
log_metrics(step, {'''loss/eval''': eval_loss, '''perplexity''': perplexity})
accelerator.wait_for_everyone()
snake_case__	:     Union[str, Any]      =    accelerator.unwrap_model(model)
unwrapped_model.save_pretrained(args.save_dir, save_function=accelerator.save)
snake_case__	:     Dict      =    os.path.join(args.save_dir, f'''step_{step}''')
accelerator.save_state(save_dir)
if accelerator.is_main_process:
 hf_repo.push_to_hub(commit_message='''final model''')











import json
import os
from collections.abc import Mapping
from typing import Dict, List, Optional, Union

import numpy as np
import torch

from .imports import is_safetensors_available







def  _snake_case			(							__snake_case       ,	__snake_case       ,	__snake_case       ,	__snake_case=None     )  ->  Any:






      '''simple docstring'''







      UpperCAmelCase_	:						Dict					   =		None
      # Check the string instead of the dtype to be compatible with versions of PyTorch that don't have bfloat16.
      if str(weight.dtype     ) == "torch.bfloat16":
            # Need to reinterpret the underlined data as int16 since NumPy does not handle bfloat16s.
            UpperCAmelCase_	:						Optional[Any]					   =		weight.view(torch.intaa     )
            UpperCAmelCase_	:						Dict					   =		"bfloat16"
      UpperCAmelCase_	:						Optional[int]					   =		weight.cpu().numpy()
      UpperCAmelCase_	:						Tuple					   =		os.path.join(__snake_case       ,	F"""{weight_name}.dat"""     )
      if index is not None:
            if dtype is None:
                  UpperCAmelCase_	:						int					   =		str(array.dtype     )
            UpperCAmelCase_	:						Any					   =		{"dtype": dtype, "shape": list(array.shape     )}
      if array.ndim == 0:
            UpperCAmelCase_	:						List[str]					   =		array[None]
      UpperCAmelCase_	:						List[Any]					   =		np.memmap(__snake_case       ,	dtype=array.dtype       ,	mode="w+"       ,	shape=array.shape     )
      UpperCAmelCase_	:						List[str]					   =		array[:]
      file_array.flush()
      return index







def  _snake_case			(							__snake_case       ,	__snake_case     )  ->  Any:






      '''simple docstring'''







      UpperCAmelCase_	:						Union[str, Any]					   =		tuple(weight_info["shape"]     )
      if shape == ():
            # NumPy memory-mapped arrays can't have 0 dims so it was saved as 1d tensor
            UpperCAmelCase_	:						Dict					   =		(1,)

      UpperCAmelCase_	:						Tuple					   =		weight_info["dtype"]
      if dtype == "bfloat16":
            # NumPy does not support bfloat16 so this was saved as a int16
            UpperCAmelCase_	:						Tuple					   =		"int16"

      UpperCAmelCase_	:						Union[str, Any]					   =		np.memmap(__snake_case       ,	dtype=__snake_case       ,	shape=__snake_case       ,	mode="r"     )

      if len(weight_info["shape"]     ) == 0:
            UpperCAmelCase_	:						Optional[Any]					   =		weight[0]
      UpperCAmelCase_	:						List[str]					   =		torch.tensor(__snake_case     )
      if weight_info["dtype"] == "bfloat16":
            UpperCAmelCase_	:						Union[str, Any]					   =		weight.view(torch.bfloataa     )

      return weight







def  _snake_case			(							__snake_case       ,	__snake_case     )  ->  List[Any]:






      '''simple docstring'''







      if index is None or len(__snake_case     ) == 0:
            # Nothing to save
            return

      UpperCAmelCase_	:						str					   =		os.path.join(__snake_case       ,	"index.json"     )
      if os.path.isfile(__snake_case     ):
            with open(__snake_case       ,	"r"       ,	encoding="utf-8"     ) as f:
                  UpperCAmelCase_	:						str					   =		json.load(__snake_case     )
      else:
            UpperCAmelCase_	:						Dict					   =		{}
      current_index.update(__snake_case     )

      with open(__snake_case       ,	"w"       ,	encoding="utf-8"     ) as f:
            json.dump(__snake_case       ,	__snake_case       ,	indent=2     )







def  _snake_case			(							__snake_case       ,	__snake_case     )  ->  Union[str, Any]:






      '''simple docstring'''







      os.makedirs(__snake_case       ,	exist_ok=__snake_case     )
      UpperCAmelCase_	:						Any					   =		{}
      for name, parameter in state_dict.items():
            UpperCAmelCase_	:						Tuple					   =		offload_weight(__snake_case       ,	__snake_case       ,	__snake_case       ,	index=__snake_case     )

      # Update index
      save_offload_index(__snake_case       ,	__snake_case     )


class 	snake_case_			(lowercase__	):




       """simple docstring"""






       def __init__(  self  ,lowercase  ,lowercase):

             """simple docstring"""





             UpperCAmelCase_	:						Optional[Any]					   =		dataset
             UpperCAmelCase_	:						Any					   =		prefix



       def __getitem__(  self  ,lowercase):

             """simple docstring"""





             return self.dataset[F"""{self.prefix}{key}"""]



       def __iter__(  self):

             """simple docstring"""





             return iter([key for key in self.dataset if key.startswith(self.prefix)])



       def __len__(  self):

             """simple docstring"""





             return len(self.dataset)


class 	snake_case_			(lowercase__	):




       """simple docstring"""






       def __init__(  self  ,lowercase = None  ,lowercase = None  ,lowercase = None  ,lowercase=None  ,):

             """simple docstring"""





             if state_dict is None and save_folder is None:
                   raise ValueError("Need either a `state_dict` or a `save_folder` containing offloaded weights.")

             UpperCAmelCase_	:						Tuple					   =		{} if state_dict is None else state_dict
             UpperCAmelCase_	:						List[Any]					   =		save_folder
             if index is None and save_folder is not None:
                   with open(os.path.join(lowercase  ,"index.json")) as f:
                         UpperCAmelCase_	:						Dict					   =		json.load(lowercase)
             UpperCAmelCase_	:						List[str]					   =		{} if index is None else index
             UpperCAmelCase_	:						int					   =		list(self.state_dict.keys())
             self.all_keys.extend([key for key in self.index if key not in self.all_keys])
             UpperCAmelCase_	:						Optional[Any]					   =		device



       def __getitem__(  self  ,lowercase):

             """simple docstring"""





             if key in self.state_dict:
                   return self.state_dict[key]
             UpperCAmelCase_	:						str					   =		self.index[key]
             if weight_info.get("safetensors_file") is not None:
                   if not is_safetensors_available():
                         raise ImportError("These offloaded weights require the use of safetensors: `pip install safetensors`.")

                   from safetensors import safe_open

                   UpperCAmelCase_	:						Any					   =		"cpu" if self.device is None else self.device
                   with safe_open(weight_info["safetensors_file"]  ,framework="pt"  ,device=lowercase) as f:
                         UpperCAmelCase_	:						int					   =		f.get_tensor(weight_info.get("weight_name"  ,lowercase))

                   if "dtype" in weight_info:
                         return tensor.to(getattr(lowercase  ,weight_info["dtype"]))
                   else:
                         return tensor

             UpperCAmelCase_	:						Optional[int]					   =		os.path.join(self.save_folder  ,F"""{key}.dat""")
             return load_offloaded_weight(lowercase  ,lowercase)



       def __iter__(  self):

             """simple docstring"""





             return iter(self.all_keys)



       def __len__(  self):

             """simple docstring"""





             return len(self.all_keys)







def  _snake_case			(							__snake_case       ,	__snake_case     )  ->  Optional[Any]:






      '''simple docstring'''







      UpperCAmelCase_	:						str					   =		{}
      for module_name in submodule_names:
            # We want to catch module_name parameter (module_name.xxx) or potentially module_name, but not any of the
            # submodules that could being like module_name (transformers.h.1 and transformers.h.10 for instance)
            result.update(
                {
                    key: param
                    for key, param in state_dict.items()
                    if key == module_name or key.startswith(module_name + "."     )
                }     )
      return result
