code: 
  
  
  import random
  from typing import List, Optional, Union
  
  import numpy as np
  import torch
  
  from ..state import AcceleratorState
  from .constants import CUDA_DISTRIBUTED_TYPES
  from .dataclasses import DistributedType, RNGType
  from .imports import is_npu_available, is_tpu_available, is_xpu_available
  
  
  if is_tpu_available(check_device=False):
   import torch_xla.core.xla_model as xm
  def     UpperCAmelCase__		(UpperCamelCase_							,UpperCamelCase_ = False       ):
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       if device_specific:
            seed += AcceleratorState().process_index
       random.seed(UpperCamelCase_       )
       np.random.seed(UpperCamelCase_       )
       torch.manual_seed(UpperCamelCase_       )
       if is_xpu_available():
            torch.xpu.manual_seed_all(UpperCamelCase_       )
       elif is_npu_available():
            torch.npu.manual_seed_all(UpperCamelCase_       )
       else:
            torch.cuda.manual_seed_all(UpperCamelCase_       )
       # ^^ safe to call this function even if cuda is not available
       if is_tpu_available():
            xm.set_rng_state(UpperCamelCase_       )
  def     UpperCAmelCase__		(UpperCamelCase_ = None							,UpperCamelCase_ = None       ):
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       if rng_type == RNGType.TORCH:
            snake_case					=       torch.get_rng_state()
       elif rng_type == RNGType.CUDA:
            snake_case					=       torch.cuda.get_rng_state()
       elif rng_type == RNGType.XLA:
            assert is_tpu_available(), "Can't synchronize XLA seeds on an environment without TPUs."
            snake_case					=       torch.tensor(xm.get_rng_state()       )
       elif rng_type == RNGType.NPU:
            assert is_npu_available(), "Can't synchronize NPU seeds on an environment without NPUs."
            snake_case					=       torch.npu.get_rng_state()
       elif rng_type == RNGType.XPU:
            assert is_xpu_available(), "Can't synchronize XPU seeds on an environment without XPUs."
            snake_case					=       torch.xpu.get_rng_state()
       elif rng_type == RNGType.GENERATOR:
            assert generator is not None, "Need a generator to synchronize its seed."
            snake_case					=       generator.get_state()
  
       # Broadcast the rng state from device 0 to other devices
       snake_case					=       AcceleratorState()
       if state.distributed_type == DistributedType.TPU:
            snake_case					=       rng_state.to(xm.xla_device()       )
            xm.collective_broadcast([rng_state]       )
            xm.mark_step()
            snake_case					=       rng_state.cpu()
       elif (
           state.distributed_type in CUDA_DISTRIBUTED_TYPES
           or state.distributed_type == DistributedType.MULTI_NPU
           or state.distributed_type == DistributedType.MULTI_XPU
       ):
            snake_case					=       rng_state.to(state.device       )
            torch.distributed.broadcast(UpperCamelCase_							,0       )
            snake_case					=       rng_state.cpu()
       elif state.distributed_type == DistributedType.MULTI_CPU:
            torch.distributed.broadcast(UpperCamelCase_							,0       )
  
       # Set the broadcast rng state
       if rng_type == RNGType.TORCH:
            torch.set_rng_state(UpperCamelCase_       )
       elif rng_type == RNGType.CUDA:
            torch.cuda.set_rng_state(UpperCamelCase_       )
       elif rng_type == RNGType.NPU:
            torch.npu.set_rng_state(UpperCamelCase_       )
       elif rng_type == RNGType.XPU:
            torch.xpu.set_rng_state(UpperCamelCase_       )
       elif rng_type == RNGType.XLA:
            xm.set_rng_state(rng_state.item()       )
       elif rng_type == RNGType.GENERATOR:
            generator.set_state(UpperCamelCase_       )
  
  def     UpperCAmelCase__		(UpperCamelCase_							,UpperCamelCase_ = None       ):
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       for rng_type in rng_types:
            synchronize_rng_state(RNGType(UpperCamelCase_       )							,generator=UpperCamelCase_       )
  
  
  
  
  
style_context: 
  
  
  import argparse
  import datetime
  import json
  import time
  import warnings
  from logging import getLogger
  from pathlib import Path
  from typing import Dict, List
  
  import torch
  from tqdm import tqdm
  
  from transformers import AutoModelForSeqaSeqLM, AutoTokenizer
  from utils import calculate_bleu, calculate_rouge, chunks, parse_numeric_n_bool_cl_kwargs, use_task_specific_params
  
  
  _SCREAMING_SNAKE_CASE    :				str       =					getLogger(__name__)
  
  
  _SCREAMING_SNAKE_CASE    :				int       =					"cuda" if torch.cuda.is_available() else "cpu"
  def     UpperCAmelCase__		(UpperCamelCase_							,UpperCamelCase_							,UpperCamelCase_							,UpperCamelCase_ = 8							,UpperCamelCase_ = DEFAULT_DEVICE							,UpperCamelCase_=False							,UpperCamelCase_="summarization"							,UpperCamelCase_=None							,**UpperCamelCase_							,):
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       snake_case					=       Path(UpperCamelCase_       ).open('''w'''							,encoding='''utf-8'''       )
       snake_case					=       str(UpperCamelCase_       )
       snake_case					=       AutoModelForSeqaSeqLM.from_pretrained(UpperCamelCase_       ).to(UpperCamelCase_       )
       if fpaa:
            snake_case					=       model.half()
  
       snake_case					=       AutoTokenizer.from_pretrained(UpperCamelCase_       )
       logger.info(F'''Inferred tokenizer type: {tokenizer.__class__}'''       )  # if this is wrong, check config.model_type.
  
       snake_case					=       time.time()
       # update config with task specific params
       use_task_specific_params(UpperCamelCase_							,UpperCamelCase_       )
       if prefix is None:
            snake_case					=       prefix or getattr(model.config							,'''prefix'''							,''''''       ) or ''''''
       for examples_chunk in tqdm(list(chunks(UpperCamelCase_							,UpperCamelCase_       )       )       ):
            snake_case					=       [prefix + text for text in examples_chunk]
            snake_case					=       tokenizer(UpperCamelCase_							,return_tensors='''pt'''							,truncation=UpperCamelCase_							,padding='''longest'''       ).to(UpperCamelCase_       )
            snake_case					=       model.generate(
                input_ids=batch.input_ids							,attention_mask=batch.attention_mask							,**UpperCamelCase_							,)
            snake_case					=       tokenizer.batch_decode(UpperCamelCase_							,skip_special_tokens=UpperCamelCase_							,clean_up_tokenization_spaces=UpperCamelCase_       )
            for hypothesis in dec:
                 fout.write(hypothesis + '''\n'''       )
                 fout.flush()
       fout.close()
       snake_case					=       int(time.time() - start_time       )  # seconds
       snake_case					=       len(UpperCamelCase_       )
       return {"n_obs": n_obs, "runtime": runtime, "seconds_per_sample": round(runtime / n_obs							,4       )}
  def     UpperCAmelCase__		():
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       return datetime.datetime.now().strftime('''%Y-%m-%d %H:%M:%S'''       )
  def     UpperCAmelCase__		(UpperCamelCase_=True       ):
  
  
  
       """simple docstring"""
  
  
  
  
  
  
       snake_case					=       argparse.ArgumentParser()
       parser.add_argument('''model_name'''							,type=UpperCamelCase_							,help='''like facebook/bart-large-cnn,t5-base, etc.'''       )
       parser.add_argument('''input_path'''							,type=UpperCamelCase_							,help='''like cnn_dm/test.source'''       )
       parser.add_argument('''save_path'''							,type=UpperCamelCase_							,help='''where to save summaries'''       )
       parser.add_argument('''--reference_path'''							,type=UpperCamelCase_							,required=UpperCamelCase_							,help='''like cnn_dm/test.target'''       )
       parser.add_argument('''--score_path'''							,type=UpperCamelCase_							,required=UpperCamelCase_							,default='''metrics.json'''							,help='''where to save metrics'''       )
       parser.add_argument('''--device'''							,type=UpperCamelCase_							,required=UpperCamelCase_							,default=UpperCamelCase_							,help='''cuda, cuda:1, cpu etc.'''       )
       parser.add_argument(
           '''--prefix'''							,type=UpperCamelCase_							,required=UpperCamelCase_							,default=UpperCamelCase_							,help='''will be added to the begininng of src examples'''       )
       parser.add_argument('''--task'''							,type=UpperCamelCase_							,default='''summarization'''							,help='''used for task_specific_params + metrics'''       )
       parser.add_argument('''--bs'''							,type=UpperCamelCase_							,default=8							,required=UpperCamelCase_							,help='''batch size'''       )
       parser.add_argument(
           '''--n_obs'''							,type=UpperCamelCase_							,default=-1							,required=UpperCamelCase_							,help='''How many observations. Defaults to all.'''       )
       parser.add_argument('''--fp16'''							,action='''store_true'''       )
       parser.add_argument('''--dump-args'''							,action='''store_true'''							,help='''print the custom hparams with the results'''       )
       parser.add_argument(
           '''--info'''							,nargs='''?'''							,type=UpperCamelCase_							,const=datetime_now()							,help=(
               '''use in conjunction w/ --dump-args to print with the results whatever other info you\'d like, e.g.'''
               ''' lang=en-ru. If no value is passed, the current datetime string will be used.'''
           )							,)
       # Unspecified args like --num_beams=2 --decoder_start_token_id=4 are passed to model.generate
       snake_case				,						snake_case					=       parser.parse_known_args()
       snake_case					=       parse_numeric_n_bool_cl_kwargs(UpperCamelCase_       )
       if parsed_args and verbose:
            print(F'''parsed the following generate kwargs: {parsed_args}'''       )
       with open(args.input_path       ) as f:
            snake_case					=       [''' ''' + x.rstrip() if '''t5''' in args.model_name else x.rstrip() for x in f.readlines()]
       if args.n_obs > 0:
            snake_case					=       examples[: args.n_obs]
       Path(args.save_path       ).parent.mkdir(exist_ok=UpperCamelCase_       )
       if args.reference_path is None and Path(args.score_path       ).exists():
            warnings.warn(F'''score_path {args.score_path} will be overwritten unless you type ctrl-c.'''       )
       snake_case					=       generate_summaries_or_translations(
           UpperCamelCase_							,args.save_path							,args.model_name							,batch_size=args.bs							,device=args.device							,fpaa=args.fpaa							,task=args.task							,prefix=args.prefix							,**UpperCamelCase_							,)
  
       if args.reference_path is None:
            return {}
  
       # Compute scores
       snake_case					=       calculate_bleu if '''translation''' in args.task else calculate_rouge
       snake_case					=       [x.rstrip() for x in open(args.save_path       ).readlines()]
       snake_case					=       [x.rstrip() for x in open(args.reference_path       ).readlines()][: len(UpperCamelCase_       )]
       snake_case					=       score_fn(UpperCamelCase_							,UpperCamelCase_       )
       scores.update(UpperCamelCase_       )
  
       if args.dump_args:
            scores.update(UpperCamelCase_       )
       if args.info:
            snake_case					=       args.info
  
       if verbose:
            print(UpperCamelCase_       )
  
       if args.score_path is not None:
            json.dump(UpperCamelCase_							,open(args.score_path							,'''w'''       )       )
  
       return scores
  
  
  if __name__ == "__main__":
   # Usage for MT:
   # python run_eval.py MODEL_NAME $DATA_DIR/test.source $save_dir/test_translations.txt --reference_path $DATA_DIR/test.target --score_path $save_dir/test_bleu.json  --task translation $@
   run_generate(verbose=True)
  
  
  
  
  