





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,
# specifically showcasing the experiment tracking capability,
# and builds off the `nlp_example.py` script.
#
# 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 help focus on the differences in the code, building `DataLoaders`
# was refactored into its own function.
# New additions from the base script can be found quickly by
# looking for the # New Code # tags
#
# 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				:       List[Any]	   =				16
_UpperCAmelCase				:       Any	   =				32


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

    def tokenize_function(_UpperCAmelCase ):
        # max_length=None => use the model max length (it's actually the default)
        lowerCamelCase__    :      Optional[int]					 =		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__    :      List[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__    :      List[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__    :      int					 =		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__    :      int					 =		16
        elif accelerator.mixed_precision != "no":
            lowerCamelCase__    :      Dict					 =		8
        else:
            lowerCamelCase__    :      Optional[int]					 =		None

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

    # Instantiate dataloaders.
    lowerCamelCase__    :      Optional[int]					 =		DataLoader(
        tokenized_datasets['train']						,	shuffle=_UpperCAmelCase						,	collate_fn=_UpperCAmelCase						,	batch_size=_UpperCAmelCase )
    lowerCamelCase__    :      str					 =		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				:       Optional[Any]	   =				mocked_dataloaders  # noqa: F811


def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase						,	_UpperCAmelCase )			->     str:
    # For testing only
    if os.environ.get('TESTING_MOCKED_DATALOADERS'						,	_UpperCAmelCase ) == "1":
        lowerCamelCase__    :      Optional[int]					 =		2
    # Initialize Accelerator

    # New Code #
    # We pass in "all" to `log_with` to grab all available trackers in the environment
    # Note: If using a custom `Tracker` class, should be passed in here such as:
    # >>> log_with = ["all", MyCustomTrackerClassInstance()]
    if args.with_tracking:
        lowerCamelCase__    :      List[Any]					 =		Accelerator(
            cpu=args.cpu						,	mixed_precision=args.mixed_precision						,	log_with='all'						,	project_dir=args.project_dir )
    else:
        lowerCamelCase__    :      Optional[int]					 =		Accelerator(cpu=args.cpu						,	mixed_precision=args.mixed_precision )
    # Sample hyper-parameters for learning rate, batch size, seed and a few other HPs
    lowerCamelCase__    :      Optional[Any]					 =		config['lr']
    lowerCamelCase__    :      Tuple					 =		int(config['num_epochs'] )
    lowerCamelCase__    :      Union[str, Any]					 =		int(config['seed'] )
    lowerCamelCase__    :      str					 =		int(config['batch_size'] )
    set_seed(_UpperCAmelCase )

    lowerCamelCase__ ,							lowerCamelCase__    :      Optional[int]					 =		get_dataloaders(_UpperCAmelCase						,	_UpperCAmelCase )
    lowerCamelCase__    :      Optional[int]					 =		evaluate.load('glue'						,	'mrpc' )

    # If the batch size is too big we use gradient accumulation
    lowerCamelCase__    :      Optional[Any]					 =		1
    if batch_size > MAX_GPU_BATCH_SIZE and accelerator.distributed_type != DistributedType.TPU:
        lowerCamelCase__    :      Any					 =		batch_size // MAX_GPU_BATCH_SIZE
        lowerCamelCase__    :      str					 =		MAX_GPU_BATCH_SIZE

    # Instantiate the model (we build the model here so that the seed also control new weights initialization)
    lowerCamelCase__    :      Union[str, Any]					 =		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[Any]					 =		model.to(accelerator.device )

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

    # Instantiate scheduler
    lowerCamelCase__    :      List[Any]					 =		get_linear_schedule_with_warmup(
        optimizer=_UpperCAmelCase						,	num_warmup_steps=100						,	num_training_steps=(len(_UpperCAmelCase ) * num_epochs) // gradient_accumulation_steps						,	)

    # 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__    :      Optional[Any]					 =		accelerator.prepare(
        _UpperCAmelCase						,	_UpperCAmelCase						,	_UpperCAmelCase						,	_UpperCAmelCase						,	_UpperCAmelCase )

    # New Code #
    # We need to initialize the trackers we use. Overall configurations can also be stored
    if args.with_tracking:
        lowerCamelCase__    :      Optional[Any]					 =		os.path.split(_UpperCAmelCase )[-1].split('.' )[0]
        accelerator.init_trackers(_UpperCAmelCase						,	_UpperCAmelCase )

    # Now we train the model
    for epoch in range(_UpperCAmelCase ):
        model.train()
        # New Code #
        # For our tracking example, we will log the total loss of each epoch
        if args.with_tracking:
            lowerCamelCase__    :      Union[str, Any]					 =		0
        for step, batch in enumerate(_UpperCAmelCase ):
            # We could avoid this line since we set the accelerator with `device_placement=True`.
            batch.to(accelerator.device )
            lowerCamelCase__    :      Any					 =		model(**_UpperCAmelCase )
            lowerCamelCase__    :      Dict					 =		outputs.loss
            # New Code #
            if args.with_tracking:
                total_loss += loss.detach().float()
            lowerCamelCase__    :      Dict					 =		loss / gradient_accumulation_steps
            accelerator.backward(_UpperCAmelCase )
            if step % gradient_accumulation_steps == 0:
                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` (the default).
            batch.to(accelerator.device )
            with torch.no_grad():
                lowerCamelCase__    :      str					 =		model(**_UpperCAmelCase )
            lowerCamelCase__    :      List[str]					 =		outputs.logits.argmax(dim=-1 )
            lowerCamelCase__ ,							lowerCamelCase__    :      Dict					 =		accelerator.gather_for_metrics((predictions, batch['labels']) )
            metric.add_batch(
                predictions=_UpperCAmelCase						,	references=_UpperCAmelCase						,	)

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

        # New Code #
        # To actually log, we call `Accelerator.log`
        # The values passed can be of `str`, `int`, `float` or `dict` of `str` to `float`/`int`
        if args.with_tracking:
            accelerator.log(
                {
                    'accuracy': eval_metric['accuracy'],
                    'f1': eval_metric['f1'],
                    'train_loss': total_loss.item() / len(_UpperCAmelCase ),
                    'epoch': epoch,
                }						,	step=_UpperCAmelCase						,	)

    # New Code #
    # When a run is finished, you should call `accelerator.end_training()`
    # to close all of the open trackers
    if args.with_tracking:
        accelerator.end_training()


def        SCREAMING_SNAKE_CASE      (       )			->     List[str]:
    lowerCamelCase__    :      Any					 =		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.'						,	)
    parser.add_argument('--cpu'						,	action='store_true'						,	help='If passed, will train on the CPU.' )
    parser.add_argument(
        '--with_tracking'						,	action='store_true'						,	help='Whether to load in all available experiment trackers from the environment and use them for logging.'						,	)
    parser.add_argument(
        '--project_dir'						,	type=_UpperCAmelCase						,	default='logs'						,	help='Location on where to store experiment tracking logs` and relevent project information'						,	)
    lowerCamelCase__    :      Union[str, Any]					 =		parser.parse_args()
    lowerCamelCase__    :      str					 =		{'lr': 2e-5, 'num_epochs': 3, 'seed': 42, 'batch_size': 16}
    training_function(_UpperCAmelCase						,	_UpperCAmelCase )


if __name__ == "__main__":
    main()







from typing import Optional, Tuple, Union

import flax
import flax.linen as nn
import jax
import jax.numpy as jnp
from flax.core.frozen_dict import FrozenDict

from ..configuration_utils import ConfigMixin, flax_register_to_config
from ..utils import BaseOutput
from .embeddings_flax import FlaxTimestepEmbedding, FlaxTimesteps
from .modeling_flax_utils import FlaxModelMixin
from .unet_ad_blocks_flax import (
    FlaxCrossAttnDownBlockaD,
    FlaxCrossAttnUpBlockaD,
    FlaxDownBlockaD,
    FlaxUNetMidBlockaDCrossAttn,
    FlaxUpBlockaD,
)






@flax.struct.dataclass
class   UpperCAmelCase		(						A_ ):
   A__					:		jnp.ndarray






@flax_register_to_config
class   UpperCAmelCase		(						nn.Module       ,A_       ,A_ ):
   A__					:		int						     =     32
   A__					:		int						     =     4
   A__					:		int						     =     4
   A__					:		Tuple[str]						     =     (
       "CrossAttnDownBlock2D",
       "CrossAttnDownBlock2D",
       "CrossAttnDownBlock2D",
       "DownBlock2D",
   )
   A__					:		Tuple[str]						     =     ("UpBlock2D", "CrossAttnUpBlock2D", "CrossAttnUpBlock2D", "CrossAttnUpBlock2D")
   A__					:		Union[bool, Tuple[bool]]						     =     False
   A__					:		Tuple[int]						     =     (3_20, 6_40, 12_80, 12_80)
   A__					:		int						     =     2
   A__					:		Union[int, Tuple[int]]						     =     8
   A__					:		Optional[Union[int, Tuple[int]]]						     =     None
   A__					:		int						     =     12_80
   A__					:		float						     =     0.0
   A__					:		bool						     =     False
   A__					:		jnp.dtype						     =     jnp.floataa
   A__					:		bool						     =     True
   A__					:		int						     =     0
   A__					:		bool						     =     False



   def 				_SCREAMING_SNAKE_CASE   (self		:					Optional[int]    ,						snake_case__		:					jax.random.KeyArray )		->	FrozenDict:


          '''simple docstring'''


          snake_case       :   Dict							=      (1, self.in_channels, self.sample_size, self.sample_size)
          snake_case       :   Any							=      jnp.zeros(snake_case__    ,						dtype=jnp.floataa )
          snake_case       :   List[str]							=      jnp.ones((1,)    ,						dtype=jnp.intaa )
          snake_case       :   str							=      jnp.zeros((1, 1, self.cross_attention_dim)    ,						dtype=jnp.floataa )

          snake_case				,					snake_case       :   Optional[int]							=      jax.random.split(snake_case__ )
          snake_case       :   Union[str, Any]							=      {"params": params_rng, "dropout": dropout_rng}

          return self.init(snake_case__    ,						snake_case__    ,						snake_case__    ,						snake_case__ )["params"]



   def 				_SCREAMING_SNAKE_CASE   (self		:					str )		->	Tuple:


          '''simple docstring'''


          snake_case       :   str							=      self.block_out_channels
          snake_case       :   Optional[Any]							=      block_out_channels[0] * 4

          if self.num_attention_heads is not None:
                 raise ValueError(
                     "At the moment it is not possible to define the number of attention heads via `num_attention_heads` because of a naming issue as described in https://github.com/huggingface/diffusers/issues/2011#issuecomment-1547958131. Passing `num_attention_heads` will only be supported in diffusers v0.19." )

          # If `num_attention_heads` is not defined (which is the case for most models)
          # it will default to `attention_head_dim`. This looks weird upon first reading it and it is.
          # The reason for this behavior is to correct for incorrectly named variables that were introduced
          # when this library was created. The incorrect naming was only discovered much later in https://github.com/huggingface/diffusers/issues/2011#issuecomment-1547958131
          # Changing `attention_head_dim` to `num_attention_heads` for 40,000+ configurations is too backwards breaking
          # which is why we correct for the naming here.
          snake_case       :   Tuple							=      self.num_attention_heads or self.attention_head_dim

          # input
          snake_case       :   Tuple							=      nn.Conv(
              block_out_channels[0]    ,						kernel_size=(3, 3)    ,						strides=(1, 1)    ,						padding=((1, 1), (1, 1))    ,						dtype=self.dtype    ,						)

          # time
          snake_case       :   Union[str, Any]							=      FlaxTimesteps(
              block_out_channels[0]    ,						flip_sin_to_cos=self.flip_sin_to_cos    ,						freq_shift=self.config.freq_shift )
          snake_case       :   Dict							=      FlaxTimestepEmbedding(snake_case__    ,						dtype=self.dtype )

          snake_case       :   List[str]							=      self.only_cross_attention
          if isinstance(snake_case__    ,						snake_case__ ):
                 snake_case       :   List[Any]							=      (only_cross_attention,) * len(self.down_block_types )

          if isinstance(snake_case__    ,						snake_case__ ):
                 snake_case       :   List[Any]							=      (num_attention_heads,) * len(self.down_block_types )

          # down
          snake_case       :   List[Any]							=      []
          snake_case       :   Optional[int]							=      block_out_channels[0]
          for i, down_block_type in enumerate(self.down_block_types ):
                 snake_case       :   List[Any]							=      output_channel
                 snake_case       :   Dict							=      block_out_channels[i]
                 snake_case       :   Optional[Any]							=      i == len(snake_case__ ) - 1

                 if down_block_type == "CrossAttnDownBlock2D":
                        snake_case       :   List[Any]							=      FlaxCrossAttnDownBlockaD(
                            in_channels=snake_case__    ,						out_channels=snake_case__    ,						dropout=self.dropout    ,						num_layers=self.layers_per_block    ,						num_attention_heads=num_attention_heads[i]    ,						add_downsample=not is_final_block    ,						use_linear_projection=self.use_linear_projection    ,						only_cross_attention=only_cross_attention[i]    ,						use_memory_efficient_attention=self.use_memory_efficient_attention    ,						dtype=self.dtype    ,						)
                 else:
                        snake_case       :   Union[str, Any]							=      FlaxDownBlockaD(
                            in_channels=snake_case__    ,						out_channels=snake_case__    ,						dropout=self.dropout    ,						num_layers=self.layers_per_block    ,						add_downsample=not is_final_block    ,						dtype=self.dtype    ,						)

                 down_blocks.append(snake_case__ )
          snake_case       :   Dict							=      down_blocks

          # mid
          snake_case       :   Optional[int]							=      FlaxUNetMidBlockaDCrossAttn(
              in_channels=block_out_channels[-1]    ,						dropout=self.dropout    ,						num_attention_heads=num_attention_heads[-1]    ,						use_linear_projection=self.use_linear_projection    ,						use_memory_efficient_attention=self.use_memory_efficient_attention    ,						dtype=self.dtype    ,						)

          # up
          snake_case       :   Optional[Any]							=      []
          snake_case       :   Optional[int]							=      list(reversed(snake_case__ ) )
          snake_case       :   Dict							=      list(reversed(snake_case__ ) )
          snake_case       :   Tuple							=      list(reversed(snake_case__ ) )
          snake_case       :   Optional[Any]							=      reversed_block_out_channels[0]
          for i, up_block_type in enumerate(self.up_block_types ):
                 snake_case       :   Optional[int]							=      output_channel
                 snake_case       :   List[Any]							=      reversed_block_out_channels[i]
                 snake_case       :   Union[str, Any]							=      reversed_block_out_channels[min(i + 1    ,						len(snake_case__ ) - 1 )]

                 snake_case       :   int							=      i == len(snake_case__ ) - 1

                 if up_block_type == "CrossAttnUpBlock2D":
                        snake_case       :   Any							=      FlaxCrossAttnUpBlockaD(
                            in_channels=snake_case__    ,						out_channels=snake_case__    ,						prev_output_channel=snake_case__    ,						num_layers=self.layers_per_block + 1    ,						num_attention_heads=reversed_num_attention_heads[i]    ,						add_upsample=not is_final_block    ,						dropout=self.dropout    ,						use_linear_projection=self.use_linear_projection    ,						only_cross_attention=only_cross_attention[i]    ,						use_memory_efficient_attention=self.use_memory_efficient_attention    ,						dtype=self.dtype    ,						)
                 else:
                        snake_case       :   Optional[int]							=      FlaxUpBlockaD(
                            in_channels=snake_case__    ,						out_channels=snake_case__    ,						prev_output_channel=snake_case__    ,						num_layers=self.layers_per_block + 1    ,						add_upsample=not is_final_block    ,						dropout=self.dropout    ,						dtype=self.dtype    ,						)

                 up_blocks.append(snake_case__ )
                 snake_case       :   Optional[int]							=      output_channel
          snake_case       :   Tuple							=      up_blocks

          # out
          snake_case       :   Optional[int]							=      nn.GroupNorm(num_groups=32    ,						epsilon=1e-5 )
          snake_case       :   List[str]							=      nn.Conv(
              self.out_channels    ,						kernel_size=(3, 3)    ,						strides=(1, 1)    ,						padding=((1, 1), (1, 1))    ,						dtype=self.dtype    ,						)



   def __call__(self		:					Dict    ,						snake_case__		:					Dict    ,						snake_case__		:					Dict    ,						snake_case__		:					Optional[int]    ,						snake_case__		:					Tuple=None    ,						snake_case__		:					Union[str, Any]=None    ,						snake_case__		:					bool = True    ,						snake_case__		:					bool = False    ,						)		->	Union[FlaxUNetaDConditionOutput, Tuple]:


          '''simple docstring'''


          if not isinstance(snake_case__    ,						jnp.ndarray ):
                 snake_case       :   List[Any]							=      jnp.array([timesteps]    ,						dtype=jnp.intaa )
          elif isinstance(snake_case__    ,						jnp.ndarray ) and len(timesteps.shape ) == 0:
                 snake_case       :   Any							=      timesteps.astype(dtype=jnp.floataa )
                 snake_case       :   int							=      jnp.expand_dims(snake_case__    ,						0 )

          snake_case       :   str							=      self.time_proj(snake_case__ )
          snake_case       :   str							=      self.time_embedding(snake_case__ )

          # 2. pre-process
          snake_case       :   int							=      jnp.transpose(snake_case__    ,						(0, 2, 3, 1) )
          snake_case       :   List[Any]							=      self.conv_in(snake_case__ )

          # 3. down
          snake_case       :   Optional[int]							=      (sample,)
          for down_block in self.down_blocks:
                 if isinstance(snake_case__    ,						snake_case__ ):
                        snake_case				,					snake_case       :   List[Any]							=      down_block(snake_case__    ,						snake_case__    ,						snake_case__    ,						deterministic=not train )
                 else:
                        snake_case				,					snake_case       :   str							=      down_block(snake_case__    ,						snake_case__    ,						deterministic=not train )
                 down_block_res_samples += res_samples

          if down_block_additional_residuals is not None:
                 snake_case       :   Tuple							=      ()

                 for down_block_res_sample, down_block_additional_residual in zip(
                     snake_case__    ,						snake_case__ ):
                        down_block_res_sample += down_block_additional_residual
                        new_down_block_res_samples += (down_block_res_sample,)

                 snake_case       :   Optional[int]							=      new_down_block_res_samples

          # 4. mid
          snake_case       :   Optional[int]							=      self.mid_block(snake_case__    ,						snake_case__    ,						snake_case__    ,						deterministic=not train )

          if mid_block_additional_residual is not None:
                 sample += mid_block_additional_residual

          # 5. up
          for up_block in self.up_blocks:
                 snake_case       :   int							=      down_block_res_samples[-(self.layers_per_block + 1) :]
                 snake_case       :   Optional[Any]							=      down_block_res_samples[: -(self.layers_per_block + 1)]
                 if isinstance(snake_case__    ,						snake_case__ ):
                        snake_case       :   Optional[Any]							=      up_block(
                            snake_case__    ,						temb=snake_case__    ,						encoder_hidden_states=snake_case__    ,						res_hidden_states_tuple=snake_case__    ,						deterministic=not train    ,						)
                 else:
                        snake_case       :   Dict							=      up_block(snake_case__    ,						temb=snake_case__    ,						res_hidden_states_tuple=snake_case__    ,						deterministic=not train )

        # 6. post-process
          snake_case       :   List[str]							=      self.conv_norm_out(snake_case__ )
          snake_case       :   Any							=      nn.silu(snake_case__ )
          snake_case       :   Optional[int]							=      self.conv_out(snake_case__ )
          snake_case       :   Union[str, Any]							=      jnp.transpose(snake_case__    ,						(0, 3, 1, 2) )

          if not return_dict:
                 return (sample,)

          return FlaxUNetaDConditionOutput(sample=snake_case__ )





