





import argparse
import os

import evaluate
import torch
from datasets import load_dataset
from torch.optim import AdamW
from torch.utils.data import DataLoader
from transformers import AutoModelForSequenceClassification, AutoTokenizer, get_linear_schedule_with_warmup, set_seed

from accelerate import Accelerator, DistributedType


########################################################################
# This is a fully working simple example to use Accelerate
# and perform gradient accumulation
#
# This example trains a Bert base model on GLUE MRPC
# in any of the following settings (with the same script):
#   - single CPU or single GPU
#   - multi GPUS (using PyTorch distributed mode)
#   - (multi) TPUs
#   - fp16 (mixed-precision) or fp32 (normal precision)
#
# To run it in each of these various modes, follow the instructions
# in the readme for examples:
# https://github.com/huggingface/accelerate/tree/main/examples
#
########################################################################


_UpperCAmelCase							:			Dict        =							16
_UpperCAmelCase							:			Optional[Any]        =							32


def 			SCREAMING_SNAKE_CASE (			_UpperCAmelCase		,      _UpperCAmelCase = 16					)     ->	Optional[int]:
    lowerCamelCase__       : int   					=						AutoTokenizer.from_pretrained('bert-base-cased'					)
    lowerCamelCase__       : Tuple   					=						load_dataset('glue'		,      'mrpc'					)

    def tokenize_function(_UpperCAmelCase					):
        # max_length=None => use the model max length (it's actually the default)
        lowerCamelCase__       : Optional[Any]   					=						tokenizer(examples['sentence1']		,      examples['sentence2']		,      truncation=_UpperCAmelCase		,      max_length=_UpperCAmelCase					)
        return outputs

    # Apply the method we just defined to all the examples in all the splits of the dataset
    # starting with the main process first:
    with accelerator.main_process_first():
        lowerCamelCase__       : Optional[Any]   					=						datasets.map(
            _UpperCAmelCase		,      batched=_UpperCAmelCase		,      remove_columns=['idx', 'sentence1', 'sentence2']		,      )

    # We also rename the 'label' column to 'labels' which is the expected name for labels by the models of the
    # transformers library
    lowerCamelCase__       : Optional[Any]   					=						tokenized_datasets.rename_column('label'		,      'labels'					)

    def collate_fn(_UpperCAmelCase					):
        # On TPU it's best to pad everything to the same length or training will be very slow.
        lowerCamelCase__       : Dict   					=						128 if accelerator.distributed_type == DistributedType.TPU else None
        # When using mixed precision we want round multiples of 8/16
        if accelerator.mixed_precision == "fp8":
            lowerCamelCase__       : Tuple   					=						16
        elif accelerator.mixed_precision != "no":
            lowerCamelCase__       : Any   					=						8
        else:
            lowerCamelCase__       : Union[str, Any]   					=						None

        return tokenizer.pad(
            _UpperCAmelCase		,      padding='longest'		,      max_length=_UpperCAmelCase		,      pad_to_multiple_of=_UpperCAmelCase		,      return_tensors='pt'		,      )

    # Instantiate dataloaders.
    lowerCamelCase__       : Any   					=						DataLoader(
        tokenized_datasets['train']		,      shuffle=_UpperCAmelCase		,      collate_fn=_UpperCAmelCase		,      batch_size=_UpperCAmelCase					)
    lowerCamelCase__       : Any   					=						DataLoader(
        tokenized_datasets['validation']		,      shuffle=_UpperCAmelCase		,      collate_fn=_UpperCAmelCase		,      batch_size=_UpperCAmelCase					)

    return train_dataloader, eval_dataloader


# For testing only
if os.environ.get("""TESTING_MOCKED_DATALOADERS""", None) == "1":
    from accelerate.test_utils.training import mocked_dataloaders

    _UpperCAmelCase							:			Union[str, Any]        =							mocked_dataloaders  # noqa: F811


def 			SCREAMING_SNAKE_CASE (			_UpperCAmelCase		,      _UpperCAmelCase					)     ->	Optional[int]:
    # For testing only
    if os.environ.get('TESTING_MOCKED_DATALOADERS'		,      _UpperCAmelCase					) == "1":
        lowerCamelCase__       : Union[str, Any]   					=						2
    # New Code #
    lowerCamelCase__       : Union[str, Any]   					=						int(args.gradient_accumulation_steps					)
    # Initialize accelerator
    lowerCamelCase__       : Optional[int]   					=						Accelerator(
        cpu=args.cpu		,      mixed_precision=args.mixed_precision		,      gradient_accumulation_steps=_UpperCAmelCase					)
    if accelerator.distributed_type == DistributedType.TPU and gradient_accumulation_steps > 1:
        raise NotImplementedError(
            'Gradient accumulation on TPUs is currently not supported. Pass `gradient_accumulation_steps=1`'					)
    # Sample hyper-parameters for learning rate, batch size, seed and a few other HPs
    lowerCamelCase__       : Optional[Any]   					=						config['lr']
    lowerCamelCase__       : int   					=						int(config['num_epochs']					)
    lowerCamelCase__       : List[Any]   					=						int(config['seed']					)
    lowerCamelCase__       : List[Any]   					=						int(config['batch_size']					)

    lowerCamelCase__       : Dict   					=						evaluate.load('glue'		,      'mrpc'					)

    set_seed(_UpperCAmelCase					)
    lowerCamelCase__					,				lowerCamelCase__       : List[Any]   					=						get_dataloaders(_UpperCAmelCase		,      _UpperCAmelCase					)
    # Instantiate the model (we build the model here so that the seed also control new weights initialization)
    lowerCamelCase__       : str   					=						AutoModelForSequenceClassification.from_pretrained('bert-base-cased'		,      return_dict=_UpperCAmelCase					)

    # We could avoid this line since the accelerator is set with `device_placement=True` (default value).
    # Note that if you are placing tensors on devices manually, this line absolutely needs to be before the optimizer
    # creation otherwise training will not work on TPU (`accelerate` will kindly throw an error to make us aware of that).
    lowerCamelCase__       : Optional[int]   					=						model.to(accelerator.device					)

    # Instantiate optimizer
    lowerCamelCase__       : str   					=						AdamW(params=model.parameters()		,      lr=_UpperCAmelCase					)

    # Instantiate scheduler
    lowerCamelCase__       : str   					=						get_linear_schedule_with_warmup(
        optimizer=_UpperCAmelCase		,      num_warmup_steps=100		,      num_training_steps=(len(_UpperCAmelCase					) * num_epochs)		,      )

    # Prepare everything
    # There is no specific order to remember, we just need to unpack the objects in the same order we gave them to the
    # prepare method.
    lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__       : Dict   					=						accelerator.prepare(
        _UpperCAmelCase		,      _UpperCAmelCase		,      _UpperCAmelCase		,      _UpperCAmelCase		,      _UpperCAmelCase					)

    # Now we train the model
    for epoch in range(_UpperCAmelCase					):
        model.train()
        for step, batch in enumerate(_UpperCAmelCase					):
            # We could avoid this line since we set the accelerator with `device_placement=True`.
            batch.to(accelerator.device					)
            # New code #
            # We use the new `accumulate` context manager to perform gradient accumulation
            # We also currently do not support TPUs nor advise it as bugs were found on the XLA side when running our tests.
            with accelerator.accumulate(_UpperCAmelCase					):
                lowerCamelCase__       : Optional[Any]   					=						model(**_UpperCAmelCase					)
                lowerCamelCase__       : List[str]   					=						output.loss
                accelerator.backward(_UpperCAmelCase					)
                optimizer.step()
                lr_scheduler.step()
                optimizer.zero_grad()

        model.eval()
        for step, batch in enumerate(_UpperCAmelCase					):
            # We could avoid this line since we set the accelerator with `device_placement=True`.
            batch.to(accelerator.device					)
            with torch.no_grad():
                lowerCamelCase__       : Tuple   					=						model(**_UpperCAmelCase					)
            lowerCamelCase__       : List[Any]   					=						outputs.logits.argmax(dim=-1					)
            lowerCamelCase__					,				lowerCamelCase__       : int   					=						accelerator.gather_for_metrics((predictions, batch['labels'])					)
            metric.add_batch(
                predictions=_UpperCAmelCase		,      references=_UpperCAmelCase		,      )

        lowerCamelCase__       : int   					=						metric.compute()
        # Use accelerator.print to print only on the main process.
        accelerator.print(F"""epoch {epoch}:"""		,      _UpperCAmelCase					)


def 			SCREAMING_SNAKE_CASE (			)     ->	str:
    lowerCamelCase__       : int   					=						argparse.ArgumentParser(description='Simple example of training script.'					)
    parser.add_argument(
        '--mixed_precision'		,      type=_UpperCAmelCase		,      default=_UpperCAmelCase		,      choices=['no', 'fp16', 'bf16', 'fp8']		,      help='Whether to use mixed precision. Choose'
        'between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >= 1.10.'
        'and an Nvidia Ampere GPU.'		,      )
    # New Code #
    parser.add_argument(
        '--gradient_accumulation_steps'		,      type=_UpperCAmelCase		,      default=1		,      help='The number of minibatches to be ran before gradients are accumulated.'		,      )
    parser.add_argument('--cpu'		,      action='store_true'		,      help='If passed, will train on the CPU.'					)
    lowerCamelCase__       : Any   					=						parser.parse_args()
    lowerCamelCase__       : int   					=						{'lr': 2e-5, 'num_epochs': 3, 'seed': 42, 'batch_size': 16}
    training_function(_UpperCAmelCase		,      _UpperCAmelCase					)


if __name__ == "__main__":
    main()












import tempfile
import unittest

import numpy as np

import transformers
from transformers import GPTaTokenizer, GPTJConfig, is_flax_available, is_torch_available
from transformers.testing_utils import is_pt_flax_cross_test, require_flax, tooslow

from ...generation.test_flax_utils import FlaxGenerationTesterMixin
from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor, random_attention_mask


if is_flax_available():
    import jax
    import jax.numpy as jnp

    from transformers.modeling_flax_pytorch_utils import (
        convert_pytorch_state_dict_to_flax,
        load_flax_weights_in_pytorch_model,
    )
    from transformers.models.gptj.modeling_flax_gptj import FlaxGPTJForCausalLM, FlaxGPTJModel

if is_torch_available():
    import torch

class   lowerCAmelCase				:
 def __init__( self    : List[str]     ,	UpperCAmelCase    : List[Any]     ,	UpperCAmelCase    : str=14     ,	UpperCAmelCase    : Any=7     ,	UpperCAmelCase    : Dict=True     ,	UpperCAmelCase    : List[str]=True     ,	UpperCAmelCase    : Any=False     ,	UpperCAmelCase    : Tuple=True     ,	UpperCAmelCase    : int=99     ,	UpperCAmelCase    : str=32     ,	UpperCAmelCase    : int=4     ,	UpperCAmelCase    : Optional[Any]=4     ,	UpperCAmelCase    : Any=4     ,	UpperCAmelCase    : Optional[int]=37     ,	UpperCAmelCase    : Union[str, Any]="gelu"     ,	UpperCAmelCase    : List[Any]=0.1     ,	UpperCAmelCase    : Dict=0.1     ,	UpperCAmelCase    : Optional[int]=512     ,	UpperCAmelCase    : List[Any]=0.0_2     ,	)     ->      List[Any]:
     lowerCamelCase__       : Tuple   					=						parent
     lowerCamelCase__       : Tuple   					=						batch_size
     lowerCamelCase__       : Optional[Any]   					=						seq_length
     lowerCamelCase__       : str   					=						is_training
     lowerCamelCase__       : Any   					=						use_input_mask
     lowerCamelCase__       : Optional[Any]   					=						use_token_type_ids
     lowerCamelCase__       : Optional[Any]   					=						use_labels
     lowerCamelCase__       : Optional[Any]   					=						vocab_size
     lowerCamelCase__       : Optional[int]   					=						hidden_size
     lowerCamelCase__       : Optional[Any]   					=						rotary_dim
     lowerCamelCase__       : Optional[Any]   					=						num_hidden_layers
     lowerCamelCase__       : Optional[Any]   					=						num_attention_heads
     lowerCamelCase__       : Tuple   					=						intermediate_size
     lowerCamelCase__       : Union[str, Any]   					=						hidden_act
     lowerCamelCase__       : List[Any]   					=						hidden_dropout_prob
     lowerCamelCase__       : int   					=						attention_probs_dropout_prob
     lowerCamelCase__       : Dict   					=						max_position_embeddings
     lowerCamelCase__       : Tuple   					=						initializer_range
     lowerCamelCase__       : Optional[int]   					=						None
     lowerCamelCase__       : int   					=						vocab_size - 1
     lowerCamelCase__       : str   					=						vocab_size - 1
     lowerCamelCase__       : str   					=						vocab_size - 1
 def 	A_      ( self    : str      )     ->      int:
     lowerCamelCase__       : Optional[int]   					=						ids_tensor([self.batch_size, self.seq_length]     ,	self.vocab_size      )

     lowerCamelCase__       : Optional[Any]   					=						None
     if self.use_input_mask:
         lowerCamelCase__       : List[str]   					=						random_attention_mask([self.batch_size, self.seq_length]      )

     lowerCamelCase__       : Tuple   					=						GPTJConfig(
         vocab_size=self.vocab_size     ,	n_embd=self.hidden_size     ,	n_layer=self.num_hidden_layers     ,	n_head=self.num_attention_heads     ,	n_positions=self.max_position_embeddings     ,	use_cache=UpperCAmelCase     ,	bos_token_id=self.bos_token_id     ,	eos_token_id=self.eos_token_id     ,	pad_token_id=self.pad_token_id     ,	rotary_dim=self.rotary_dim     ,	)

     return (config, input_ids, input_mask)
 def 	A_      ( self    : Optional[Any]      )     ->      Union[str, Any]:
     lowerCamelCase__       : Tuple   					=						self.prepare_config_and_inputs()
     lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__       : List[Any]   					=						config_and_inputs
     lowerCamelCase__       : List[Any]   					=						{'input_ids': input_ids, 'attention_mask': attention_mask}
     return config, inputs_dict
 def 	A_      ( self    : int     ,	UpperCAmelCase    : Optional[Any]     ,	UpperCAmelCase    : Any     ,	UpperCAmelCase    : List[str]     ,	UpperCAmelCase    : Optional[Any]      )     ->      Tuple:
     lowerCamelCase__       : Tuple   					=						20
     lowerCamelCase__       : Dict   					=						model_class_name(UpperCAmelCase      )

     lowerCamelCase__       : Dict   					=						model.init_cache(input_ids.shape[0]     ,	UpperCAmelCase      )
     lowerCamelCase__       : int   					=						jnp.ones((input_ids.shape[0], max_decoder_length)     ,	dtype='i4'      )

     lowerCamelCase__       : List[str]   					=						jnp.broadcast_to(
         jnp.arange(input_ids.shape[-1] - 1      )[None, :]     ,	(input_ids.shape[0], input_ids.shape[-1] - 1)      )
     lowerCamelCase__       : Optional[int]   					=						model(
         input_ids[:, :-1]     ,	attention_mask=UpperCAmelCase     ,	past_key_values=UpperCAmelCase     ,	position_ids=UpperCAmelCase     ,	)

     lowerCamelCase__       : List[str]   					=						jnp.array(input_ids.shape[0] * [[input_ids.shape[-1] - 1]]     ,	dtype='i4'      )
     lowerCamelCase__       : List[str]   					=						model(
         input_ids[:, -1:]     ,	attention_mask=UpperCAmelCase     ,	past_key_values=outputs_cache.past_key_values     ,	position_ids=UpperCAmelCase     ,	)

     lowerCamelCase__       : List[str]   					=						model(UpperCAmelCase      )

     lowerCamelCase__       : Optional[Any]   					=						np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])      )      )
     self.parent.assertTrue(diff < 1e-3     ,	msg=F"""Max diff is {diff}"""      )







 def 	A_      ( self    : Union[str, Any]     ,	UpperCAmelCase    : Any     ,	UpperCAmelCase    : Any     ,	UpperCAmelCase    : List[Any]     ,	UpperCAmelCase    : List[str]      )     ->      Optional[Any]:
     lowerCamelCase__       : Any   					=						20
     lowerCamelCase__       : Any   					=						model_class_name(UpperCAmelCase      )

     lowerCamelCase__       : List[str]   					=						jnp.concatenate(
         [attention_mask, jnp.zeros((attention_mask.shape[0], max_decoder_length - attention_mask.shape[1])      )]     ,	axis=-1     ,	)

     lowerCamelCase__       : str   					=						model.init_cache(input_ids.shape[0]     ,	UpperCAmelCase      )
     lowerCamelCase__       : Dict   					=						jnp.broadcast_to(
         jnp.arange(input_ids.shape[-1] - 1      )[None, :]     ,	(input_ids.shape[0], input_ids.shape[-1] - 1)      )

     lowerCamelCase__       : List[Any]   					=						model(
         input_ids[:, :-1]     ,	attention_mask=UpperCAmelCase     ,	past_key_values=UpperCAmelCase     ,	position_ids=UpperCAmelCase     ,	)
     lowerCamelCase__       : Optional[Any]   					=						jnp.array(input_ids.shape[0] * [[input_ids.shape[-1] - 1]]     ,	dtype='i4'      )
     lowerCamelCase__       : List[Any]   					=						model(
         input_ids[:, -1:]     ,	past_key_values=outputs_cache.past_key_values     ,	attention_mask=UpperCAmelCase     ,	position_ids=UpperCAmelCase     ,	)

     lowerCamelCase__       : List[Any]   					=						model(UpperCAmelCase     ,	attention_mask=UpperCAmelCase      )

     lowerCamelCase__       : Dict   					=						np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])      )      )
     self.parent.assertTrue(diff < 1e-3     ,	msg=F"""Max diff is {diff}"""      )


@require_flax
class   lowerCAmelCase				(   __UpperCamelCase,    __UpperCamelCase,    unittest.TestCase     ):
 UpperCAmelCase__						=						(FlaxGPTJModel, FlaxGPTJForCausalLM) if is_flax_available() else ()
 UpperCAmelCase__						=						(FlaxGPTJForCausalLM,) if is_flax_available() else ()
 def 	A_      ( self    : Optional[Any]      )     ->      Tuple:
     lowerCamelCase__       : Optional[Any]   					=						FlaxGPTJModelTester(self      )
 def 	A_      ( self    : Tuple      )     ->      Union[str, Any]:
     for model_class_name in self.all_model_classes:
         lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__       : Optional[int]   					=						self.model_tester.prepare_config_and_inputs()
         self.model_tester.check_use_cache_forward(UpperCAmelCase     ,	UpperCAmelCase     ,	UpperCAmelCase     ,	UpperCAmelCase      )
 def 	A_      ( self    : Union[str, Any]      )     ->      Tuple:
     for model_class_name in self.all_model_classes:
         lowerCamelCase__					,				lowerCamelCase__					,				lowerCamelCase__       : str   					=						self.model_tester.prepare_config_and_inputs()
         self.model_tester.check_use_cache_forward_with_attn_mask(
             UpperCAmelCase     ,	UpperCAmelCase     ,	UpperCAmelCase     ,	UpperCAmelCase      )
 @tooslow
 def 	A_      ( self    : Dict      )     ->      Tuple:
     lowerCamelCase__       : str   					=						GPTaTokenizer.from_pretrained('gpt2'     ,	pad_token='<|endoftext|>'     ,	padding_side='left'      )
     lowerCamelCase__       : Dict   					=						tokenizer(['Hello this is a long string', 'Hey']     ,	return_tensors='np'     ,	padding=UpperCAmelCase     ,	truncation=UpperCAmelCase      )

     lowerCamelCase__       : str   					=						FlaxGPTJForCausalLM.from_pretrained('EleutherAI/gpt-j-6B'      )
     lowerCamelCase__       : Optional[int]   					=						False
     lowerCamelCase__       : Optional[int]   					=						model.config.eos_token_id

     lowerCamelCase__       : Union[str, Any]   					=						jax.jit(model.generate      )

     lowerCamelCase__       : Optional[Any]   					=						jit_generate(
         inputs['input_ids']     ,	attention_mask=inputs['attention_mask']     ,	pad_token_id=tokenizer.pad_token_id      ).sequences

     lowerCamelCase__       : Optional[int]   					=						tokenizer.batch_decode(UpperCAmelCase     ,	skip_special_tokens=UpperCAmelCase      )

     lowerCamelCase__       : int   					=						[
         'Hello this is a long string of text.\n\nI\'m trying to get the text of the',
         'Hey, I\'m a little late to the party. I\'m going to',
     ]

     self.assertListEqual(UpperCAmelCase     ,	UpperCAmelCase      )
 @is_pt_flax_cross_test
 def 	A_      ( self    : List[str]      )     ->      Union[str, Any]:
     lowerCamelCase__					,				lowerCamelCase__       : Optional[int]   					=						self.model_tester.prepare_config_and_inputs_for_common()

     for model_class in self.all_model_classes:
         with self.subTest(model_class.__name__      ):
             # prepare inputs
             lowerCamelCase__       : Dict   					=						self._prepare_for_class(UpperCAmelCase     ,	UpperCAmelCase      )
             lowerCamelCase__       : Optional[int]   					=						{k: torch.tensor(v.tolist()      ) for k, v in prepared_inputs_dict.items()}

             # load corresponding PyTorch class
             lowerCamelCase__       : Any   					=						model_class.__name__[4:]  # Skip the "Flax" at the beginning
             lowerCamelCase__       : Union[str, Any]   					=						getattr(UpperCAmelCase     ,	UpperCAmelCase      )

             lowerCamelCase__					,				lowerCamelCase__       : Tuple   					=						pt_inputs['input_ids'].shape
             lowerCamelCase__       : Tuple   					=						np.random.randint(0     ,	seq_length - 1     ,	size=(batch_size,)      )
             for batch_idx, start_index in enumerate(UpperCAmelCase      ):
                 lowerCamelCase__       : List[str]   					=						0
                 lowerCamelCase__       : Optional[int]   					=						1
                 lowerCamelCase__       : Any   					=						0
                 lowerCamelCase__       : Any   					=						1
             lowerCamelCase__       : Dict   					=						pt_model_class(UpperCAmelCase      ).eval()
             lowerCamelCase__       : str   					=						model_class(UpperCAmelCase     ,	dtype=jnp.floataa      )

             lowerCamelCase__       : str   					=						convert_pytorch_state_dict_to_flax(pt_model.state_dict()     ,	UpperCAmelCase      )
             lowerCamelCase__       : Tuple   					=						fx_state

             with torch.no_grad():
                 lowerCamelCase__       : List[str]   					=						pt_model(**UpperCAmelCase      ).to_tuple()

             lowerCamelCase__       : Dict   					=						fx_model(**UpperCAmelCase      ).to_tuple()
             self.assertEqual(len(UpperCAmelCase      )     ,	len(UpperCAmelCase      )     ,	'Output lengths differ between Flax and PyTorch'      )
             for fx_output, pt_output in zip(UpperCAmelCase     ,	UpperCAmelCase      ):
                 self.assert_almost_equals(fx_output[:, -1]     ,	pt_output[:, -1].numpy()     ,	4e-2      )

             with tempfile.TemporaryDirectory() as tmpdirname:
                 pt_model.save_pretrained(UpperCAmelCase      )
                 lowerCamelCase__       : Tuple   					=						model_class.from_pretrained(UpperCAmelCase     ,	from_pt=UpperCAmelCase      )

             lowerCamelCase__       : int   					=						fx_model_loaded(**UpperCAmelCase      ).to_tuple()
             self.assertEqual(
                 len(UpperCAmelCase      )     ,	len(UpperCAmelCase      )     ,	'Output lengths differ between Flax and PyTorch'      )
             for fx_output_loaded, pt_output in zip(UpperCAmelCase     ,	UpperCAmelCase      ):
                 self.assert_almost_equals(fx_output_loaded[:, -1]     ,	pt_output[:, -1].numpy()     ,	4e-2      )
 @is_pt_flax_cross_test
 def 	A_      ( self    : Union[str, Any]      )     ->      int:
     lowerCamelCase__					,				lowerCamelCase__       : Dict   					=						self.model_tester.prepare_config_and_inputs_for_common()
     for model_class in self.all_model_classes:
         with self.subTest(model_class.__name__      ):
             # prepare inputs
             lowerCamelCase__       : Tuple   					=						self._prepare_for_class(UpperCAmelCase     ,	UpperCAmelCase      )
             lowerCamelCase__       : Tuple   					=						{k: torch.tensor(v.tolist()      ) for k, v in prepared_inputs_dict.items()}

             # load corresponding PyTorch class
             lowerCamelCase__       : Union[str, Any]   					=						model_class.__name__[4:]  # Skip the "Flax" at the beginning
             lowerCamelCase__       : int   					=						getattr(UpperCAmelCase     ,	UpperCAmelCase      )

             lowerCamelCase__       : List[Any]   					=						pt_model_class(UpperCAmelCase      ).eval()
             lowerCamelCase__       : str   					=						model_class(UpperCAmelCase     ,	dtype=jnp.floataa      )

             lowerCamelCase__       : List[str]   					=						load_flax_weights_in_pytorch_model(UpperCAmelCase     ,	fx_model.params      )
             lowerCamelCase__					,				lowerCamelCase__       : Union[str, Any]   					=						pt_inputs['input_ids'].shape
             lowerCamelCase__       : Dict   					=						np.random.randint(0     ,	seq_length - 1     ,	size=(batch_size,)      )
             for batch_idx, start_index in enumerate(UpperCAmelCase      ):
                 lowerCamelCase__       : List[Any]   					=						0
                 lowerCamelCase__       : Tuple   					=						1
                 lowerCamelCase__       : Optional[Any]   					=						0
                 lowerCamelCase__       : List[str]   					=						1

             # make sure weights are tied in PyTorch
             pt_model.tie_weights()

             with torch.no_grad():
                 lowerCamelCase__       : Any   					=						pt_model(**UpperCAmelCase      ).to_tuple()

             lowerCamelCase__       : List[Any]   					=						fx_model(**UpperCAmelCase      ).to_tuple()
             self.assertEqual(len(UpperCAmelCase      )     ,	len(UpperCAmelCase      )     ,	'Output lengths differ between Flax and PyTorch'      )
             for fx_output, pt_output in zip(UpperCAmelCase     ,	UpperCAmelCase      ):
                 self.assert_almost_equals(fx_output[:, -1]     ,	pt_output[:, -1].numpy()     ,	4e-2      )

             with tempfile.TemporaryDirectory() as tmpdirname:
                 fx_model.save_pretrained(UpperCAmelCase      )
                 lowerCamelCase__       : Tuple   					=						pt_model_class.from_pretrained(UpperCAmelCase     ,	from_flax=UpperCAmelCase      )

             with torch.no_grad():
                 lowerCamelCase__       : Optional[int]   					=						pt_model_loaded(**UpperCAmelCase      ).to_tuple()

             self.assertEqual(
                 len(UpperCAmelCase      )     ,	len(UpperCAmelCase      )     ,	'Output lengths differ between Flax and PyTorch'      )
             for fx_output, pt_output in zip(UpperCAmelCase     ,	UpperCAmelCase      ):
                 self.assert_almost_equals(fx_output[:, -1]     ,	pt_output[:, -1].numpy()     ,	4e-2      )







 @tooslow
 def 	A_      ( self    : List[str]      )     ->      List[Any]:
     for model_class_name in self.all_model_classes:
         lowerCamelCase__       : Union[str, Any]   					=						model_class_name.from_pretrained('EleutherAI/gpt-j-6B'      )
         lowerCamelCase__       : Any   					=						model(np.ones((1, 1)      )      )
         self.assertIsNotNone(UpperCAmelCase      )





