



import argparse
import logging
import os
from datetime import datetime

import numpy as np
import torch
from torch import nn
from torch.utils.data import DataLoader, RandomSampler, TensorDataset
from tqdm import tqdm

from transformers import GPTaLMHeadModel


__A       =						logging.getLogger(__name__)



def 	__a					(   lowerCAmelCase_       : List[str]      ,lowerCAmelCase_       : str    )				->			List[Any]:






						'''simple docstring'''



						if os.path.exists(lowerCAmelCase_    ):
												if os.path.exists(os.path.join(lowerCAmelCase_      ,"""config.json"""    )    ) and os.path.isfile(
												    os.path.join(lowerCAmelCase_      ,"""config.json"""    )    ):
																		os.remove(os.path.join(lowerCAmelCase_      ,"""config.json"""    )    )
												if os.path.exists(os.path.join(lowerCAmelCase_      ,"""pytorch_model.bin"""    )    ) and os.path.isfile(
												    os.path.join(lowerCAmelCase_      ,"""pytorch_model.bin"""    )    ):
																		os.remove(os.path.join(lowerCAmelCase_      ,"""pytorch_model.bin"""    )    )
						else:
												os.makedirs(lowerCAmelCase_    )
						model.save_pretrained(lowerCAmelCase_    )



def 	__a					(   lowerCAmelCase_       : Optional[int]      ,lowerCAmelCase_       : str=False    )				->			int:






						'''simple docstring'''



						UpperCAmelCase_=       2
						if unlogit:
												UpperCAmelCase_=       torch.pow(lowerCAmelCase_      ,lowerCAmelCase_    )
						UpperCAmelCase_=       p * torch.log(lowerCAmelCase_    )
						UpperCAmelCase_=       0
						return -plogp.sum(dim=-1    )



def 	__a					(   lowerCAmelCase_       : int    )				->			Dict:






						'''simple docstring'''



						logger.info("""lv, h >\t""" + """\t""".join(F"""{x + 1}""" for x in range(len(lowerCAmelCase_    )    )    )    )
						for row in range(len(lowerCAmelCase_    )    ):
												if tensor.dtype != torch.long:
																		logger.info(F"""layer {row + 1}:\t""" + """\t""".join(F"""{x:.5f}""" for x in tensor[row].cpu().data    )    )
												else:
																		logger.info(F"""layer {row + 1}:\t""" + """\t""".join(F"""{x:d}""" for x in tensor[row].cpu().data    )    )



def 	__a					(   lowerCAmelCase_       : Union[str, Any]      ,lowerCAmelCase_       : str      ,lowerCAmelCase_       : List[Any]      ,lowerCAmelCase_       : List[Any]=True      ,lowerCAmelCase_       : Tuple=True      ,lowerCAmelCase_       : Any=None      ,lowerCAmelCase_       : str=False    )				->			List[str]:






						'''simple docstring'''



						UpperCAmelCase_,       UpperCAmelCase_=       model.config.num_hidden_layers, model.config.num_attention_heads
						UpperCAmelCase_=       torch.zeros(lowerCAmelCase_      ,lowerCAmelCase_    ).to(args.device    )
						UpperCAmelCase_=       torch.zeros(lowerCAmelCase_      ,lowerCAmelCase_    ).to(args.device    )

						if head_mask is None:
												UpperCAmelCase_=       torch.ones(lowerCAmelCase_      ,lowerCAmelCase_    ).to(args.device    )

						head_mask.requires_grad_(requires_grad=lowerCAmelCase_    )
						# If actually pruned attention multi-head, set head mask to None to avoid shape mismatch
						if actually_pruned:
												UpperCAmelCase_=       None

						UpperCAmelCase_=       0.0
						UpperCAmelCase_=       0.0
						for step, inputs in enumerate(tqdm(lowerCAmelCase_      ,desc="""Iteration"""      ,disable=args.local_rank not in [-1, 0]    )    ):
												UpperCAmelCase_=       tuple(t.to(args.device    ) for t in inputs    )
												((UpperCAmelCase_),       )=       inputs

												# Do a forward pass (not with torch.no_grad() since we need gradients for importance score - see below)
												UpperCAmelCase_=       model(lowerCAmelCase_      ,labels=lowerCAmelCase_      ,head_mask=lowerCAmelCase_    )
												#  (loss), lm_logits, presents, (all hidden_states), (attentions)
												UpperCAmelCase_,       UpperCAmelCase_,       UpperCAmelCase_=       (
												    outputs[0],
												    outputs[1],
												    outputs[-1],
												)  # Loss and logits are the first, attention the last
												loss.backward()  # Backpropagate to populate the gradients in the head mask
												total_loss += loss.detach().cpu().numpy()
												if compute_entropy:
																		for layer, attn in enumerate(lowerCAmelCase_    ):
																								UpperCAmelCase_=       entropy(attn.detach()      ,lowerCAmelCase_    )
																								attn_entropy[layer] += masked_entropy.sum(-1    ).sum(0    ).sum(0    ).detach()

												if compute_importance:
																		head_importance += head_mask.grad.abs().detach()
												tot_tokens += torch.ones_like(lowerCAmelCase_    ).float().detach().sum().data

						# Normalize
						attn_entropy /= tot_tokens
						head_importance /= tot_tokens
						# Layerwise importance normalization
						if not args.dont_normalize_importance_by_layer:
												UpperCAmelCase_=       2
												UpperCAmelCase_=       torch.pow(torch.pow(lowerCAmelCase_      ,lowerCAmelCase_    ).sum(-1    )      ,1 / exponent    )
												head_importance /= norm_by_layer.unsqueeze(-1    ) + 1E-20

						if not args.dont_normalize_global_importance:
												UpperCAmelCase_=       (head_importance - head_importance.min()) / (head_importance.max() - head_importance.min())

						# Print matrices
						if compute_entropy:
												logger.info("""Attention entropies"""    )
												print_ad_tensor(lowerCAmelCase_    )
						if compute_importance:
												logger.info("""Head importance scores"""    )
												print_ad_tensor(lowerCAmelCase_    )
						logger.info("""Head ranked by importance scores"""    )
						UpperCAmelCase_=       torch.zeros(head_importance.numel()      ,dtype=torch.long      ,device=args.device    )
						UpperCAmelCase_=       torch.arange(
						    head_importance.numel()      ,device=args.device    )
						UpperCAmelCase_=       head_ranks.view_as(lowerCAmelCase_    )
						print_ad_tensor(lowerCAmelCase_    )
						return attn_entropy, head_importance, total_loss



def 	__a					(   lowerCAmelCase_       : Dict      ,lowerCAmelCase_       : Tuple      ,lowerCAmelCase_       : str    )				->			int:






						'''simple docstring'''



						UpperCAmelCase_,       UpperCAmelCase_,       UpperCAmelCase_=       compute_heads_importance(lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_      ,compute_entropy=lowerCAmelCase_    )
						UpperCAmelCase_=       1 / loss  # instead of downsteam score use the LM loss
						logger.info("""Pruning: original score: %f, threshold: %f"""      ,lowerCAmelCase_      ,original_score * args.masking_threshold    )

						UpperCAmelCase_=       torch.ones_like(lowerCAmelCase_    )
						UpperCAmelCase_=       max(1      ,int(new_head_mask.numel() * args.masking_amount    )    )

						UpperCAmelCase_=       original_score
						while current_score >= original_score * args.masking_threshold:
												UpperCAmelCase_=       new_head_mask.clone().detach()  # save current head mask
												# heads from least important to most - keep only not-masked heads
												UpperCAmelCase_=       float("""Inf"""    )
												UpperCAmelCase_=       head_importance.view(-1    ).sort()[1]

												if len(lowerCAmelCase_    ) <= num_to_mask:
																		print("""BREAK BY num_to_mask"""    )
																		break

												# mask heads
												UpperCAmelCase_=       current_heads_to_mask[:num_to_mask]
												logger.info("""Heads to mask: %s"""      ,str(current_heads_to_mask.tolist()    )    )
												UpperCAmelCase_=       new_head_mask.view(-1    )
												UpperCAmelCase_=       0.0
												UpperCAmelCase_=       new_head_mask.view_as(lowerCAmelCase_    )
												UpperCAmelCase_=       new_head_mask.clone().detach()
												print_ad_tensor(lowerCAmelCase_    )

												# Compute metric and head importance again
												UpperCAmelCase_,       UpperCAmelCase_,       UpperCAmelCase_=       compute_heads_importance(
												    lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_      ,compute_entropy=lowerCAmelCase_      ,head_mask=lowerCAmelCase_    )
												UpperCAmelCase_=       1 / loss
												logger.info(
												    """Masking: current score: %f, remaining heads %d (%.1f percents)"""      ,lowerCAmelCase_      ,new_head_mask.sum()      ,new_head_mask.sum() / new_head_mask.numel() * 1_00      ,)

						logger.info("""Final head mask"""    )
						print_ad_tensor(lowerCAmelCase_    )
						np.save(os.path.join(args.output_dir      ,"""head_mask.npy"""    )      ,head_mask.detach().cpu().numpy()    )

						return head_mask



def 	__a					(   lowerCAmelCase_       : Union[str, Any]      ,lowerCAmelCase_       : Optional[Any]      ,lowerCAmelCase_       : Optional[Any]      ,lowerCAmelCase_       : str    )				->			int:






						'''simple docstring'''



						UpperCAmelCase_=       datetime.now()
						UpperCAmelCase_,       UpperCAmelCase_,       UpperCAmelCase_=       compute_heads_importance(
						    lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_      ,compute_entropy=lowerCAmelCase_      ,compute_importance=lowerCAmelCase_      ,head_mask=lowerCAmelCase_    )
						UpperCAmelCase_=       1 / loss
						UpperCAmelCase_=       datetime.now() - before_time

						UpperCAmelCase_=       sum(p.numel() for p in model.parameters()    )
						UpperCAmelCase_=       {
						    layer: (1 - head_mask[layer].long()).nonzero().squeeze().tolist() for layer in range(len(lowerCAmelCase_    )    )
						}

						for k, v in heads_to_prune.items():
												if isinstance(lowerCAmelCase_      ,lowerCAmelCase_    ):
																		UpperCAmelCase_=       [
																		    v,
																		]

						assert sum(len(lowerCAmelCase_    ) for h in heads_to_prune.values()    ) == (1 - head_mask.long()).sum().item()
						model.prune_heads(lowerCAmelCase_    )
						UpperCAmelCase_=       sum(p.numel() for p in model.parameters()    )

						UpperCAmelCase_=       datetime.now()
						UpperCAmelCase_,       UpperCAmelCase_,       UpperCAmelCase_=       compute_heads_importance(
						    lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_      ,compute_entropy=lowerCAmelCase_      ,compute_importance=lowerCAmelCase_      ,head_mask=lowerCAmelCase_      ,actually_pruned=lowerCAmelCase_      ,)

						UpperCAmelCase_=       1 / loss
						UpperCAmelCase_=       datetime.now() - before_time

						logger.info(
						    """Pruning: original num of params: %.2e, after pruning %.2e (%.1f percents)"""      ,lowerCAmelCase_      ,lowerCAmelCase_      ,pruned_num_params / original_num_params * 1_00      ,)
						logger.info("""Pruning: score with masking: %f score with pruning: %f"""      ,lowerCAmelCase_      ,lowerCAmelCase_    )
						logger.info("""Pruning: speed ratio (original timing / new timing): %f percents"""      ,original_time / new_time * 1_00    )
						save_model(lowerCAmelCase_      ,args.output_dir    )



def 	__a					(   )				->			int:






						'''simple docstring'''



						UpperCAmelCase_=       argparse.ArgumentParser()
						# Required parameters
						parser.add_argument(
						    """--data_dir"""      ,default=lowerCAmelCase_      ,type=lowerCAmelCase_      ,required=lowerCAmelCase_      ,help="""The input data dir. Should contain the .tsv files (or other data files) for the task."""      ,)
						parser.add_argument(
						    """--model_name_or_path"""      ,default=lowerCAmelCase_      ,type=lowerCAmelCase_      ,required=lowerCAmelCase_      ,help="""Path to pretrained model or model identifier from huggingface.co/models"""      ,)
						parser.add_argument(
						    """--output_dir"""      ,default=lowerCAmelCase_      ,type=lowerCAmelCase_      ,required=lowerCAmelCase_      ,help="""The output directory where the model predictions and checkpoints will be written."""      ,)

						# Other parameters
						parser.add_argument(
						    """--config_name"""      ,default=""""""      ,type=lowerCAmelCase_      ,help="""Pretrained config name or path if not the same as model_name_or_path"""      ,)
						parser.add_argument(
						    """--tokenizer_name"""      ,default=""""""      ,type=lowerCAmelCase_      ,help="""Pretrained tokenizer name or path if not the same as model_name_or_path"""      ,)
						parser.add_argument(
						    """--cache_dir"""      ,default=lowerCAmelCase_      ,type=lowerCAmelCase_      ,help="""Where do you want to store the pre-trained models downloaded from s3"""      ,)
						parser.add_argument(
						    """--data_subset"""      ,type=lowerCAmelCase_      ,default=-1      ,help="""If > 0: limit the data to a subset of data_subset instances."""    )
						parser.add_argument(
						    """--overwrite_output_dir"""      ,action="""store_true"""      ,help="""Whether to overwrite data in output directory"""    )
						parser.add_argument(
						    """--overwrite_cache"""      ,action="""store_true"""      ,help="""Overwrite the cached training and evaluation sets"""    )

						parser.add_argument(
						    """--dont_normalize_importance_by_layer"""      ,action="""store_true"""      ,help="""Don't normalize importance score by layers"""    )
						parser.add_argument(
						    """--dont_normalize_global_importance"""      ,action="""store_true"""      ,help="""Don't normalize all importance scores between 0 and 1"""      ,)

						parser.add_argument(
						    """--try_masking"""      ,action="""store_true"""      ,help="""Whether to try to mask head until a threshold of accuracy."""    )
						parser.add_argument(
						    """--masking_threshold"""      ,default=0.9      ,type=lowerCAmelCase_      ,help="""masking threshold in term of metrics (stop masking when metric < threshold * original metric value)."""      ,)
						parser.add_argument(
						    """--masking_amount"""      ,default=0.1      ,type=lowerCAmelCase_      ,help="""Amount to heads to masking at each masking step."""    )
						parser.add_argument("""--metric_name"""      ,default="""acc"""      ,type=lowerCAmelCase_      ,help="""Metric to use for head masking."""    )

						parser.add_argument(
						    """--max_seq_length"""      ,default=1_28      ,type=lowerCAmelCase_      ,help=(
						        """The maximum total input sequence length after WordPiece tokenization. \n"""
						        """Sequences longer than this will be truncated, sequences shorter padded."""
						    )      ,)
						parser.add_argument("""--batch_size"""      ,default=1      ,type=lowerCAmelCase_      ,help="""Batch size."""    )

						parser.add_argument("""--seed"""      ,type=lowerCAmelCase_      ,default=42    )
						parser.add_argument("""--local_rank"""      ,type=lowerCAmelCase_      ,default=-1      ,help="""local_rank for distributed training on gpus"""    )
						parser.add_argument("""--no_cuda"""      ,action="""store_true"""      ,help="""Whether not to use CUDA when available"""    )
						parser.add_argument("""--server_ip"""      ,type=lowerCAmelCase_      ,default=""""""      ,help="""Can be used for distant debugging."""    )
						parser.add_argument("""--server_port"""      ,type=lowerCAmelCase_      ,default=""""""      ,help="""Can be used for distant debugging."""    )
						UpperCAmelCase_=       parser.parse_args()

						if args.server_ip and args.server_port:
												# Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
												import ptvsd

												print("""Waiting for debugger attach"""    )
												ptvsd.enable_attach(address=(args.server_ip, args.server_port)      ,redirect_output=lowerCAmelCase_    )
												ptvsd.wait_for_attach()

						# Setup devices and distributed training
						if args.local_rank == -1 or args.no_cuda:
												UpperCAmelCase_=       torch.device("""cuda""" if torch.cuda.is_available() and not args.no_cuda else """cpu"""    )
												UpperCAmelCase_=       0 if args.no_cuda else torch.cuda.device_count()
						else:
												torch.cuda.set_device(args.local_rank    )
												UpperCAmelCase_=       torch.device("""cuda"""      ,args.local_rank    )
												UpperCAmelCase_=       1
												torch.distributed.init_process_group(backend="""nccl"""    )  # Initializes the distributed backend

						# Setup logging
						logging.basicConfig(level=logging.INFO if args.local_rank in [-1, 0] else logging.WARN    )
						logger.info("""device: {} n_gpu: {}, distributed: {}""".format(args.device      ,args.n_gpu      ,bool(args.local_rank != -1    )    )    )

						UpperCAmelCase_=       GPTaLMHeadModel.from_pretrained(args.model_name_or_path    )

						# Distributed and parallel training
						model.to(args.device    )
						if args.local_rank != -1:
												UpperCAmelCase_=       nn.parallel.DistributedDataParallel(
												    lowerCAmelCase_      ,device_ids=[args.local_rank]      ,output_device=args.local_rank      ,find_unused_parameters=lowerCAmelCase_    )
						elif args.n_gpu > 1:
												UpperCAmelCase_=       nn.DataParallel(lowerCAmelCase_    )

						# Print/save training arguments
						os.makedirs(args.output_dir      ,exist_ok=lowerCAmelCase_    )
						torch.save(lowerCAmelCase_      ,os.path.join(args.output_dir      ,"""run_args.bin"""    )    )
						logger.info("""Training/evaluation parameters %s"""      ,lowerCAmelCase_    )

						# Prepare dataset
						UpperCAmelCase_=       np.concatenate(
						    [
						        np.loadtxt(args.data_dir      ,dtype=np.intaa    ),
						    ]    )
						UpperCAmelCase_=       (torch.from_numpy(lowerCAmelCase_    ),)
						UpperCAmelCase_=       TensorDataset(*lowerCAmelCase_    )
						UpperCAmelCase_=       RandomSampler(lowerCAmelCase_    )
						UpperCAmelCase_=       DataLoader(lowerCAmelCase_      ,sampler=lowerCAmelCase_      ,batch_size=args.batch_size    )

						# Compute head entropy and importance score
						compute_heads_importance(lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_    )

						# Try head masking (set heads to zero until the score goes under a threshole)
						# and head pruning (remove masked heads and see the effect on the network)
						if args.try_masking and args.masking_threshold > 0.0 and args.masking_threshold < 1.0:
												UpperCAmelCase_=       mask_heads(lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_    )
												prune_heads(lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_      ,lowerCAmelCase_    )


if __name__ == "__main__":
	main()









from typing import List, Optional, Tuple, Union

import torch

from ...schedulers import DDIMScheduler
from ...utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput






class 		lowercase						(			snake_case__):






	"""simple docstring"""


	def __init__(     self     :						Dict						,  __UpperCAmelCase     :						Tuple						,  __UpperCAmelCase     :						List[Any]					)      ->			List[str]:
							super().__init__()

							# make sure scheduler can always be converted to DDIM
							UpperCAmelCase_=       DDIMScheduler.from_config(scheduler.config					)

							self.register_modules(unet=__UpperCAmelCase						,  scheduler=__UpperCAmelCase					)




	@torch.no_grad()
	def __call__(     self     :						Union[str, Any]						,  __UpperCAmelCase     :						int = 1						,  __UpperCAmelCase     :						Optional[Union[torch.Generator, List[torch.Generator]]] = None						,  __UpperCAmelCase     :						float = 0.0						,  __UpperCAmelCase     :						int = 50						,  __UpperCAmelCase     :						Optional[bool] = None						,  __UpperCAmelCase     :						Optional[str] = "pil"						,  __UpperCAmelCase     :						bool = True						,  )      ->			Union[ImagePipelineOutput, Tuple]:

							# Sample gaussian noise to begin loop
							if isinstance(self.unet.config.sample_size						,  __UpperCAmelCase					):
													UpperCAmelCase_=       (
													    batch_size,
													    self.unet.config.in_channels,
													    self.unet.config.sample_size,
													    self.unet.config.sample_size,
													)
							else:
													UpperCAmelCase_=       (batch_size, self.unet.config.in_channels, *self.unet.config.sample_size)

							if isinstance(__UpperCAmelCase						,  __UpperCAmelCase					) and len(__UpperCAmelCase					) != batch_size:
													raise ValueError(
													    F"""You have passed a list of generators of length {len(__UpperCAmelCase					)}, but requested an effective batch"""
													    F""" size of {batch_size}. Make sure the batch size matches the length of the generators."""					)

							UpperCAmelCase_=       randn_tensor(__UpperCAmelCase						,  generator=__UpperCAmelCase						,  device=self.device						,  dtype=self.unet.dtype					)

							# set step values
							self.scheduler.set_timesteps(__UpperCAmelCase					)

							for t in self.progress_bar(self.scheduler.timesteps					):
													# 1. predict noise model_output
													UpperCAmelCase_=       self.unet(__UpperCAmelCase						,  __UpperCAmelCase					).sample

													# 2. predict previous mean of image x_t-1 and add variance depending on eta
													# eta corresponds to η in paper and should be between [0, 1]
													# do x_t -> x_t-1
													UpperCAmelCase_=       self.scheduler.step(
													    __UpperCAmelCase						,  __UpperCAmelCase						,  __UpperCAmelCase						,  eta=__UpperCAmelCase						,  use_clipped_model_output=__UpperCAmelCase						,  generator=__UpperCAmelCase					).prev_sample

							UpperCAmelCase_=       (image / 2 + 0.5).clamp(0						,  1					)
							UpperCAmelCase_=       image.cpu().permute(0						,  2						,  3						,  1					).numpy()
							if output_type == "pil":
													UpperCAmelCase_=       self.numpy_to_pil(__UpperCAmelCase					)

							if not return_dict:
													return (image,)

							return ImagePipelineOutput(images=__UpperCAmelCase					)




