



import os
import sys
import tempfile

import torch

from .state import AcceleratorState
from .utils import PrecisionType, PrepareForLaunch, is_mps_available, patch_environment



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_=()  ,					SCREAMING_SNAKE_CASE_=None  ,					SCREAMING_SNAKE_CASE_="no"  ,					SCREAMING_SNAKE_CASE_="29500"					):
			lowercase__   					=			False
			lowercase__   					=			False
			if any(key.startswith("KAGGLE"					) for key in os.environ.keys()					):
						lowercase__   					=			True
			elif "IPython" in sys.modules:
						lowercase__   					=			"google.colab" in str(sys.modules["IPython"].get_ipython()					)

			try:
						lowercase__   					=			PrecisionType(mixed_precision.lower()					)
			except ValueError:
						raise ValueError(
						    f'''Unknown mixed_precision mode: {args.mixed_precision.lower()}. Choose between {PrecisionType.list()}.'''					)

			if (in_colab or in_kaggle) and (os.environ.get("TPU_NAME"  ,					__SCREAMING_SNAKE_CASE					) is not None):
						# TPU launch
						import torch_xla.distributed.xla_multiprocessing as xmp

						if len(AcceleratorState._shared_state					) > 0:
									raise ValueError(
									    "To train on TPU in Colab or Kaggle Kernel, the `Accelerator` should only be initialized inside "
									    "your training function. Restart your notebook and make sure no cells initializes an "
									    "`Accelerator`."					)
						if num_processes is None:
									lowercase__   					=			8

						lowercase__   					=			PrepareForLaunch(__SCREAMING_SNAKE_CASE  ,					distributed_type="TPU"					)
						print(f'''Launching a training on {num_processes} TPU cores.'''					)
						xmp.spawn(__SCREAMING_SNAKE_CASE  ,					args=__SCREAMING_SNAKE_CASE  ,					nprocs=__SCREAMING_SNAKE_CASE  ,					start_method="fork"					)
			elif in_colab:
						# No need for a distributed launch otherwise as it's either CPU or one GPU.
						if torch.cuda.is_available():
									print("Launching training on one GPU."					)
						else:
									print("Launching training on one CPU."					)
						function(*__SCREAMING_SNAKE_CASE					)
			else:
						if num_processes is None:
									raise ValueError(
									    "You have to specify the number of GPUs you would like to use, add `num_processes=...` to your call."					)

						if num_processes > 1:
									# Multi-GPU launch
									from torch.multiprocessing import start_processes
									from torch.multiprocessing.spawn import ProcessRaisedException

									if len(AcceleratorState._shared_state					) > 0:
												raise ValueError(
												    "To launch a multi-GPU training from your notebook, the `Accelerator` should only be initialized "
												    "inside your training function. Restart your notebook and make sure no cells initializes an "
												    "`Accelerator`."					)

									if torch.cuda.is_initialized():
												raise ValueError(
												    "To launch a multi-GPU training from your notebook, you need to avoid running any instruction "
												    "using `torch.cuda` in any cell. Restart your notebook and make sure no cells use any CUDA "
												    "function."					)

									# torch.distributed will expect a few environment variable to be here. We set the ones common to each
									# process here (the other ones will be set be the launcher).
									with patch_environment(
									    world_size=__SCREAMING_SNAKE_CASE  ,					master_addr="127.0.01"  ,					master_port=__SCREAMING_SNAKE_CASE  ,					mixed_precision=__SCREAMING_SNAKE_CASE					):
												lowercase__   					=			PrepareForLaunch(__SCREAMING_SNAKE_CASE  ,					distributed_type="MULTI_GPU"					)
												print(f'''Launching training on {num_processes} GPUs.'''					)
												try:
															start_processes(__SCREAMING_SNAKE_CASE  ,					args=__SCREAMING_SNAKE_CASE  ,					nprocs=__SCREAMING_SNAKE_CASE  ,					start_method="fork"					)
												except ProcessRaisedException as e:
															if "Cannot re-initialize CUDA in forked subprocess" in e.args[0]:
																		raise RuntimeError(
																		    "CUDA has been initialized before the `notebook_launcher` could create a forked subprocess. "
																		    "This likely stems from an outside import causing issues once the `notebook_launcher()` is called. "
																		    "Please review your imports and test them when running the `notebook_launcher()` to identify "
																		    "which one is problematic."					) from e

						else:
									# No need for a distributed launch otherwise as it's either CPU, GPU or MPS.
									if is_mps_available():
												lowercase__   					=			"1"
												print("Launching training on MPS."					)
									elif torch.cuda.is_available():
												print("Launching training on one GPU."					)
									else:
												print("Launching training on CPU."					)
									function(*__SCREAMING_SNAKE_CASE					)




def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_=()  ,					SCREAMING_SNAKE_CASE_=2					):
			from torch.multiprocessing import start_processes

			with tempfile.NamedTemporaryFile() as tmp_file:
						# torch.distributed will expect a few environment variable to be here. We set the ones common to each
						# process here (the other ones will be set be the launcher).
						with patch_environment(
						    world_size=__SCREAMING_SNAKE_CASE  ,					master_addr="127.0.01"  ,					master_port="29500"  ,					accelerate_mixed_precision="no"  ,					accelerate_debug_rdv_file=tmp_file.name  ,					accelerate_use_cpu="yes"  ,					):
									lowercase__   					=			PrepareForLaunch(__SCREAMING_SNAKE_CASE  ,					debug=__SCREAMING_SNAKE_CASE					)
									start_processes(__SCREAMING_SNAKE_CASE  ,					args=__SCREAMING_SNAKE_CASE  ,					nprocs=__SCREAMING_SNAKE_CASE  ,					start_method="fork"					)









import argparse
import json
from pathlib import Path

import requests
import torch
from huggingface_hub import hf_hub_download
from PIL import Image
from timm import create_model
from timm.data import resolve_data_config
from timm.data.transforms_factory import create_transform

from transformers import BitConfig, BitForImageClassification, BitImageProcessor
from transformers.image_utils import PILImageResampling
from transformers.utils import logging


logging.set_verbosity_info()
lowercase_						=       logging.get_logger(__name__)



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_					):
			lowercase__   					=			"huggingface/label-files"
			lowercase__   					=			"imagenet-1k-id2label.json"
			lowercase__   					=			json.load(open(hf_hub_download(SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_  ,					repo_type="dataset"					)  ,					"r"					)					)
			lowercase__   					=			{int(SCREAMING_SNAKE_CASE_					): v for k, v in idalabel.items()}
			lowercase__   					=			{v: k for k, v in idalabel.items()}

			lowercase__   					=			"std_conv" if "bit" in model_name else False

			# note that when using BiT as backbone for ViT-hybrid checkpoints,
			# one needs to additionally set config.layer_type = "bottleneck", config.stem_type = "same",
			# config.conv_layer = "std_conv_same"
			lowercase__   					=			BitConfig(
			    conv_layer=SCREAMING_SNAKE_CASE_  ,					num_labels=1000  ,					idalabel=SCREAMING_SNAKE_CASE_  ,					labelaid=SCREAMING_SNAKE_CASE_  ,					)

			return config



def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_					):
			if "stem.conv" in name:
						lowercase__   					=			name.replace("stem.conv"  ,					"bit.embedder.convolution"					)
			if "blocks" in name:
						lowercase__   					=			name.replace("blocks"  ,					"layers"					)
			if "head.fc" in name:
						lowercase__   					=			name.replace("head.fc"  ,					"classifier.1"					)
			if name.startswith("norm"					):
						lowercase__   					=			"bit." + name
			if "bit" not in name and "classifier" not in name:
						lowercase__   					=			"bit.encoder." + name

			return name



def __lowerCAmelCase	(       ):
			lowercase__   					=			"http://images.cocodataset.org/val2017/000000039769.jpg"
			lowercase__   					=			Image.open(requests.get(SCREAMING_SNAKE_CASE_  ,					stream=SCREAMING_SNAKE_CASE_					).raw					)
			return im



@torch.no_grad()
def __lowerCAmelCase	(       SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_=False					):
			lowercase__   					=			get_config(SCREAMING_SNAKE_CASE_					)

			# load original model from timm
			lowercase__   					=			create_model(SCREAMING_SNAKE_CASE_  ,					pretrained=SCREAMING_SNAKE_CASE_					)
			timm_model.eval()

			# load state_dict of original model
			lowercase__   					=			timm_model.state_dict()
			for key in state_dict.copy().keys():
						lowercase__   					=			state_dict.pop(SCREAMING_SNAKE_CASE_					)
						lowercase__   					=			val.squeeze() if "head" in key else val

			# load HuggingFace model
			lowercase__   					=			BitForImageClassification(SCREAMING_SNAKE_CASE_					)
			model.eval()
			model.load_state_dict(SCREAMING_SNAKE_CASE_					)

			# create image processor
			lowercase__   					=			create_transform(**resolve_data_config({}  ,					model=SCREAMING_SNAKE_CASE_					)					)
			lowercase__   					=			transform.transforms

			lowercase__   					=			{
			    "bilinear": PILImageResampling.BILINEAR,
			    "bicubic": PILImageResampling.BICUBIC,
			    "nearest": PILImageResampling.NEAREST,
			}

			lowercase__   					=			BitImageProcessor(
			    do_resize=SCREAMING_SNAKE_CASE_  ,					size={"shortest_edge": timm_transforms[0].size}  ,					resample=pillow_resamplings[timm_transforms[0].interpolation.value]  ,					do_center_crop=SCREAMING_SNAKE_CASE_  ,					crop_size={"height": timm_transforms[1].size[0], "width": timm_transforms[1].size[1]}  ,					do_normalize=SCREAMING_SNAKE_CASE_  ,					image_mean=timm_transforms[-1].mean.tolist()  ,					image_std=timm_transforms[-1].std.tolist()  ,					)

			lowercase__   					=			prepare_img()
			lowercase__   					=			transform(SCREAMING_SNAKE_CASE_					).unsqueeze(0					)
			lowercase__   					=			processor(SCREAMING_SNAKE_CASE_  ,					return_tensors="pt"					).pixel_values

			# verify pixel values
			assert torch.allclose(SCREAMING_SNAKE_CASE_  ,					SCREAMING_SNAKE_CASE_					)

			# verify logits
			with torch.no_grad():
						lowercase__   					=			model(SCREAMING_SNAKE_CASE_					)
						lowercase__   					=			outputs.logits

			print("Logits:"  ,					logits[0, :3]					)
			print("Predicted class:"  ,					model.config.idalabel[logits.argmax(-1					).item()]					)
			lowercase__   					=			timm_model(SCREAMING_SNAKE_CASE_					)
			assert timm_logits.shape == outputs.logits.shape
			assert torch.allclose(SCREAMING_SNAKE_CASE_  ,					outputs.logits  ,					atol=1e-3					)
			print("Looks ok!"					)

			if pytorch_dump_folder_path is not None:
						Path(SCREAMING_SNAKE_CASE_					).mkdir(exist_ok=SCREAMING_SNAKE_CASE_					)
						print(f'''Saving model {model_name} and processor to {pytorch_dump_folder_path}'''					)
						model.save_pretrained(SCREAMING_SNAKE_CASE_					)
						processor.save_pretrained(SCREAMING_SNAKE_CASE_					)

			if push_to_hub:
						print(f'''Pushing model {model_name} and processor to the hub'''					)
						model.push_to_hub(f'''ybelkada/{model_name}'''					)
						processor.push_to_hub(f'''ybelkada/{model_name}'''					)


if __name__ == "__main__":
							lowercase_						=       argparse.ArgumentParser()
							# Required parameters
							parser.add_argument(
							    """--model_name""",
							    default="""resnetv2_50x1_bitm""",
							    type=str,
							    help="""Name of the BiT timm model you'd like to convert.""",
							)
							parser.add_argument(
							    """--pytorch_dump_folder_path""", default=None, type=str, help="""Path to the output PyTorch model directory."""
							)
							parser.add_argument(
							    """--push_to_hub""",
							    action="""store_true""",
							    help="""Whether to push the model to the hub.""",
							)

							lowercase_						=       parser.parse_args()
							convert_bit_checkpoint(args.model_name, args.pytorch_dump_folder_path, args.push_to_hub)




