

'''simple docstring'''

import logging
import os
from typing import Dict, List, Optional, Union

import torch
import torch.nn as nn

from accelerate.utils.imports import (
    is_abit_bnb_available,
    is_abit_bnb_available,
    is_bnb_available,
)

from ..big_modeling import dispatch_model, init_empty_weights
from .dataclasses import BnbQuantizationConfig
from .modeling import (
    find_tied_parameters,
    get_balanced_memory,
    infer_auto_device_map,
    load_checkpoint_in_model,
    offload_weight,
    set_module_tensor_to_device,
)


if is_bnb_available():
				import bitsandbytes as bnb

from copy import deepcopy


A_       						=							logging.getLogger(__name__)





def    A_  ( snake_case      ,       snake_case      ,       snake_case = None      ,       snake_case = None      ,       snake_case = None      ,       snake_case = None      ,       snake_case = None      ,       snake_case = False      ,       ):
		SCREAMING_SNAKE_CASE:Optional[int]						      =					bnb_quantization_config.load_in_abit
		SCREAMING_SNAKE_CASE:int						      =					bnb_quantization_config.load_in_abit

		if load_in_abit and not is_abit_bnb_available():
				raise ImportError(
				    "You have a version of `bitsandbytes` that is not compatible with 8bit quantization,"
				    " make sure you have the latest version of `bitsandbytes` installed." )
		if load_in_abit and not is_abit_bnb_available():
				raise ValueError(
				    "You have a version of `bitsandbytes` that is not compatible with 4bit quantization,"
				    "make sure you have the latest version of `bitsandbytes` installed." )

		SCREAMING_SNAKE_CASE:List[str]						      =					[]
		# custom device map
		if isinstance(_lowercase      ,       _lowercase ) and len(device_map.keys() ) > 1:
				SCREAMING_SNAKE_CASE:Any						      =					[key for key, value in device_map.items() if value in ["disk", "cpu"]]

		# We keep some modules such as the lm_head in their original dtype for numerical stability reasons
		if bnb_quantization_config.skip_modules is None:
				SCREAMING_SNAKE_CASE:Optional[int]						      =					get_keys_to_not_convert(_lowercase )

		# add cpu modules to skip modules only for 4-bit modules
		if load_in_abit:
				bnb_quantization_config.skip_modules.extend(_lowercase )
		SCREAMING_SNAKE_CASE:str						      =					bnb_quantization_config.skip_modules

		# We add the modules we want to keep in full precision
		if bnb_quantization_config.keep_in_fpaa_modules is None:
				SCREAMING_SNAKE_CASE:Any						      =					[]
		SCREAMING_SNAKE_CASE:Optional[int]						      =					bnb_quantization_config.keep_in_fpaa_modules
		modules_to_not_convert.extend(_lowercase )

		# compatibility with peft
		SCREAMING_SNAKE_CASE:Union[str, Any]						      =					load_in_abit
		SCREAMING_SNAKE_CASE:List[Any]						      =					load_in_abit

		SCREAMING_SNAKE_CASE:Optional[Any]						      =					get_parameter_device(_lowercase )
		if model_device.type != "meta":
				# quantization of an already loaded model
				logger.warning(
				    "It is not recommended to quantize a loaded model. "
				    "The model should be instantiated under the `init_empty_weights` context manager." )
				SCREAMING_SNAKE_CASE:Dict						      =					replace_with_bnb_layers(_lowercase      ,       _lowercase      ,       modules_to_not_convert=_lowercase )
				# convert param to the right dtype
				SCREAMING_SNAKE_CASE:Tuple						      =					bnb_quantization_config.torch_dtype
				for name, param in model.state_dict().items():
						if any(module_to_keep_in_fpaa in name for module_to_keep_in_fpaa in keep_in_fpaa_modules ):
								param.to(torch.floataa )
								if param.dtype != torch.floataa:
										SCREAMING_SNAKE_CASE:int						      =					name.replace(".weight"      ,       "" ).replace(".bias"      ,       "" )
										SCREAMING_SNAKE_CASE:Dict						      =					getattr(_lowercase      ,       _lowercase      ,       _lowercase )
										if param is not None:
												param.to(torch.floataa )
						elif torch.is_floating_point(_lowercase ):
								param.to(_lowercase )
				if model_device.type == "cuda":
						# move everything to cpu in the first place because we can't do quantization if the weights are already on cuda
						model.cuda(torch.cuda.current_device() )
						torch.cuda.empty_cache()
				elif torch.cuda.is_available():
						model.to(torch.cuda.current_device() )
				else:
						raise RuntimeError("No GPU found. A GPU is needed for quantization." )
				logger.info(
				    F'''The model device type is {model_device.type}. However, cuda is needed for quantization.'''
				    "We move the model to cuda." )
				return model

		elif weights_location is None:
				raise RuntimeError(
				    F'''`weights_location` needs to be the folder path containing the weights of the model, but we found {weights_location} ''' )

		else:
				with init_empty_weights():
						SCREAMING_SNAKE_CASE:List[Any]						      =					replace_with_bnb_layers(
						    _lowercase      ,       _lowercase      ,       modules_to_not_convert=_lowercase )

				SCREAMING_SNAKE_CASE:int						      =					get_quantized_model_device_map(
				    _lowercase      ,       _lowercase      ,       _lowercase      ,       max_memory=_lowercase      ,       no_split_module_classes=_lowercase      ,       )
				if offload_state_dict is None and device_map is not None and "disk" in device_map.values():
						SCREAMING_SNAKE_CASE:Optional[Any]						      =					True

				SCREAMING_SNAKE_CASE:List[Any]						      =					any(x in list(device_map.values() ) for x in ["cpu", "disk"] )

				load_checkpoint_in_model(
				    _lowercase      ,       _lowercase      ,       _lowercase      ,       dtype=bnb_quantization_config.torch_dtype      ,       offload_folder=_lowercase      ,       offload_state_dict=_lowercase      ,       keep_in_fpaa_modules=bnb_quantization_config.keep_in_fpaa_modules      ,       offload_abit_bnb=load_in_abit and offload      ,       )
				return dispatch_model(_lowercase      ,       device_map=_lowercase      ,       offload_dir=_lowercase )





def    A_  ( snake_case      ,       snake_case      ,       snake_case=None      ,       snake_case=None      ,       snake_case=None ):






		if device_map is None:
				if torch.cuda.is_available():
						SCREAMING_SNAKE_CASE:Dict						      =					{"": torch.cuda.current_device()}
				else:
						raise RuntimeError("No GPU found. A GPU is needed for quantization." )
				logger.info("The device_map was not initialized." "Setting device_map to `{'':torch.cuda.current_device()}`." )

		if isinstance(_lowercase      ,       _lowercase ):
				if device_map not in ["auto", "balanced", "balanced_low_0", "sequential"]:
						raise ValueError(
						    "If passing a string for `device_map`, please choose 'auto', 'balanced', 'balanced_low_0' or "
						    "'sequential'." )

				SCREAMING_SNAKE_CASE:List[str]						      =					{}
				special_dtypes.update(
				    {
				        name: bnb_quantization_config.torch_dtype
				        for name, _ in model.named_parameters()
				        if any(m in name for m in bnb_quantization_config.skip_modules )
				    } )
				special_dtypes.update(
				    {
				        name: torch.floataa
				        for name, _ in model.named_parameters()
				        if any(m in name for m in bnb_quantization_config.keep_in_fpaa_modules )
				    } )

				SCREAMING_SNAKE_CASE:List[str]						      =					{}
				SCREAMING_SNAKE_CASE:Optional[Any]						      =					special_dtypes
				SCREAMING_SNAKE_CASE:List[Any]						      =					no_split_module_classes
				SCREAMING_SNAKE_CASE:Optional[Any]						      =					bnb_quantization_config.target_dtype

				# get max_memory for each device.
				if device_map != "sequential":
						SCREAMING_SNAKE_CASE:List[str]						      =					get_balanced_memory(
						    _lowercase      ,       low_zero=(device_map == "balanced_low_0")      ,       max_memory=_lowercase      ,       **_lowercase      ,       )

				SCREAMING_SNAKE_CASE:Optional[Any]						      =					max_memory
				SCREAMING_SNAKE_CASE:str						      =					infer_auto_device_map(_lowercase      ,       **_lowercase )

		if isinstance(_lowercase      ,       _lowercase ):
				# check if don't have any quantized module on the cpu
				SCREAMING_SNAKE_CASE:Optional[int]						      =					bnb_quantization_config.skip_modules + bnb_quantization_config.keep_in_fpaa_modules

				SCREAMING_SNAKE_CASE:List[Any]						      =					{
				    key: device_map[key] for key in device_map.keys() if key not in modules_not_to_convert
				}
				for device in ["cpu", "disk"]:
						if device in device_map_without_some_modules.values():
								if bnb_quantization_config.load_in_abit:
										raise ValueError(
										    "\n                        Some modules are dispatched on the CPU or the disk. Make sure you have enough GPU RAM to fit\n                        the quantized model. If you want to dispatch the model on the CPU or the disk while keeping\n                        these modules in `torch_dtype`, you need to pass a custom `device_map` to\n                        `load_and_quantize_model`. Check\n                        https://huggingface.co/docs/accelerate/main/en/usage_guides/quantization#offload-modules-to-cpu-and-disk\n                        for more details.\n                        " )
								else:
										logger.info(
										    "Some modules are are offloaded to the CPU or the disk. Note that these modules will be converted to 8-bit" )
				del device_map_without_some_modules
		return device_map





def    A_  ( snake_case      ,       snake_case      ,       snake_case=None      ,       snake_case=None ):






		if modules_to_not_convert is None:
				SCREAMING_SNAKE_CASE:Optional[Any]						      =					[]

		SCREAMING_SNAKE_CASE:Optional[int]						      =					_replace_with_bnb_layers(
		    _lowercase      ,       _lowercase      ,       _lowercase      ,       _lowercase )
		if not has_been_replaced:
				logger.warning(
				    "You are loading your model in 8bit or 4bit but no linear modules were found in your model."
				    " this can happen for some architectures such as gpt2 that uses Conv1D instead of Linear layers."
				    " Please double check your model architecture, or submit an issue on github if you think this is"
				    " a bug." )
		return model





def    A_  ( snake_case      ,       snake_case      ,       snake_case=None      ,       snake_case=None      ,       ):
		SCREAMING_SNAKE_CASE:Optional[Any]						      =					False
		for name, module in model.named_children():
				if current_key_name is None:
						SCREAMING_SNAKE_CASE:Tuple						      =					[]
				current_key_name.append(_lowercase )
				if isinstance(_lowercase      ,       nn.Linear ) and name not in modules_to_not_convert:
						# Check if the current key is not in the `modules_to_not_convert`
						SCREAMING_SNAKE_CASE:int						      =					".".join(_lowercase )
						SCREAMING_SNAKE_CASE:List[Any]						      =					True
						for key in modules_to_not_convert:
								if (
								    (key in current_key_name_str) and (key + "." in current_key_name_str)
								) or key == current_key_name_str:
										SCREAMING_SNAKE_CASE:Optional[int]						      =					False
										break
						if proceed:
								# Load bnb module with empty weight and replace ``nn.Linear` module
								if bnb_quantization_config.load_in_abit:
										SCREAMING_SNAKE_CASE:Union[str, Any]						      =					bnb.nn.LinearabitLt(
										    module.in_features      ,       module.out_features      ,       module.bias is not None      ,       has_fpaa_weights=_lowercase      ,       threshold=bnb_quantization_config.llm_inta_threshold      ,       )
								elif bnb_quantization_config.load_in_abit:
										SCREAMING_SNAKE_CASE:Optional[int]						      =					bnb.nn.Linearabit(
										    module.in_features      ,       module.out_features      ,       module.bias is not None      ,       bnb_quantization_config.bnb_abit_compute_dtype      ,       compress_statistics=bnb_quantization_config.bnb_abit_use_double_quant      ,       quant_type=bnb_quantization_config.bnb_abit_quant_type      ,       )
								else:
										raise ValueError("load_in_8bit and load_in_4bit can't be both False" )
								SCREAMING_SNAKE_CASE:List[Any]						      =					module.weight.data
								if module.bias is not None:
										SCREAMING_SNAKE_CASE:Dict						      =					module.bias.data
								bnb_module.requires_grad_(_lowercase )
								setattr(_lowercase      ,       _lowercase      ,       _lowercase )
								SCREAMING_SNAKE_CASE:Optional[Any]						      =					True
				if len(list(module.children() ) ) > 0:
						SCREAMING_SNAKE_CASE:Any						      =					_replace_with_bnb_layers(
						    _lowercase      ,       _lowercase      ,       _lowercase      ,       _lowercase )
						SCREAMING_SNAKE_CASE:Dict						      =					has_been_replaced | _has_been_replaced
				# Remove the last key for recursion
				current_key_name.pop(-1 )
		return model, has_been_replaced





def    A_  ( snake_case ):






		with init_empty_weights():
				SCREAMING_SNAKE_CASE:Union[str, Any]						      =					deepcopy(_lowercase )  # this has 0 cost since it is done inside `init_empty_weights` context manager`

		SCREAMING_SNAKE_CASE:Optional[Any]						      =					find_tied_parameters(_lowercase )
		# For compatibility with Accelerate < 0.18
		if isinstance(_lowercase      ,       _lowercase ):
				SCREAMING_SNAKE_CASE:str						      =					sum(list(tied_params.values() )      ,       [] ) + list(tied_params.keys() )
		else:
				SCREAMING_SNAKE_CASE:Optional[Any]						      =					sum(_lowercase      ,       [] )
		SCREAMING_SNAKE_CASE:List[Any]						      =					len(_lowercase ) > 0

		# Check if it is a base model
		SCREAMING_SNAKE_CASE:Dict						      =					False
		if hasattr(_lowercase      ,       "base_model_prefix" ):
				SCREAMING_SNAKE_CASE:Optional[int]						      =					not hasattr(_lowercase      ,       model.base_model_prefix )

		# Ignore this for base models (BertModel, GPT2Model, etc.)
		if (not has_tied_params) and is_base_model:
				return []

		# otherwise they have an attached head
		SCREAMING_SNAKE_CASE:Union[str, Any]						      =					list(model.named_children() )
		SCREAMING_SNAKE_CASE:int						      =					[list_modules[-1][0]]

		# add last module together with tied weights
		SCREAMING_SNAKE_CASE:Optional[int]						      =					set(_lowercase ) - set(_lowercase )
		SCREAMING_SNAKE_CASE:int						      =					list(set(_lowercase ) ) + list(_lowercase )

		# remove ".weight" from the keys
		SCREAMING_SNAKE_CASE:int						      =					[".weight", ".bias"]
		SCREAMING_SNAKE_CASE:Optional[int]						      =					[]
		for name in list_untouched:
				for name_to_remove in names_to_remove:
						if name_to_remove in name:
								SCREAMING_SNAKE_CASE:Dict						      =					name.replace(_lowercase      ,       "" )
				filtered_module_names.append(_lowercase )

		return filtered_module_names





def    A_  ( snake_case ):






		for m in model.modules():
				if isinstance(_lowercase      ,       bnb.nn.Linearabit ):
						return True
		return False





def    A_  ( snake_case ):
		return next(parameter.parameters() ).device





def    A_  ( snake_case      ,       snake_case      ,       snake_case      ,       snake_case      ,       snake_case      ,       snake_case      ,       snake_case ):






		if fpaa_statistics is None:
				set_module_tensor_to_device(_lowercase      ,       _lowercase      ,       0      ,       dtype=_lowercase      ,       value=_lowercase )
				SCREAMING_SNAKE_CASE:int						      =					param_name
				SCREAMING_SNAKE_CASE:List[str]						      =					model
				if "." in tensor_name:
						SCREAMING_SNAKE_CASE:Tuple						      =					tensor_name.split("." )
						for split in splits[:-1]:
								SCREAMING_SNAKE_CASE:int						      =					getattr(_lowercase      ,       _lowercase )
								if new_module is None:
										raise ValueError(F'''{module} has no attribute {split}.''' )
								SCREAMING_SNAKE_CASE:List[Any]						      =					new_module
						SCREAMING_SNAKE_CASE:Dict						      =					splits[-1]
				# offload weights
				SCREAMING_SNAKE_CASE:Optional[Any]						      =					False
				offload_weight(module._parameters[tensor_name]      ,       _lowercase      ,       _lowercase      ,       index=_lowercase )
				if hasattr(module._parameters[tensor_name]      ,       "SCB" ):
						offload_weight(
						    module._parameters[tensor_name].SCB      ,       param_name.replace("weight"      ,       "SCB" )      ,       _lowercase      ,       index=_lowercase      ,       )
		else:
				offload_weight(_lowercase      ,       _lowercase      ,       _lowercase      ,       index=_lowercase )
				offload_weight(_lowercase      ,       param_name.replace("weight"      ,       "SCB" )      ,       _lowercase      ,       index=_lowercase )

		set_module_tensor_to_device(_lowercase      ,       _lowercase      ,       "meta"      ,       dtype=_lowercase      ,       value=torch.empty(*param.size() ) )









'''simple docstring'''

import random





def    A_  ( snake_case      ,       snake_case      ,       snake_case = False ):
  SCREAMING_SNAKE_CASE:dict						      =					{i: [] for i in range(snake_case )}

  # if probability is greater or equal than 1, then generate a complete graph
  if probability >= 1:
    return complete_graph(snake_case )
  # if probability is lower or equal than 0, then return a graph without edges
  if probability <= 0:
    return graph

  # for each couple of nodes, add an edge from u to v
  # if the number randomly generated is greater than probability probability
  for i in range(snake_case ):
    for j in range(i + 1      ,       snake_case ):
      if random.random() < probability:
        graph[i].append(snake_case )
        if not directed:
          # if the graph is undirected, add an edge in from j to i, either
          graph[j].append(snake_case )
  return graph





def    A_  ( snake_case ):
  return {
      i: [j for j in range(snake_case ) if i != j] for i in range(snake_case )
  }


if __name__ == "__main__":
    import doctest

    doctest.testmod()






