aurora_dev_13b / xtuner_config.py

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	import torch
	from mmengine.dataset import DefaultSampler
	from mmengine.hooks import (CheckpointHook, DistSamplerSeedHook, IterTimerHook,
	LoggerHook, ParamSchedulerHook)

	from transformers import (AutoModelForCausalLM, AutoTokenizer,
	BitsAndBytesConfig,
	CLIPImageProcessor, CLIPVisionModel)
	from mmengine.optim import AmpOptimWrapper, CosineAnnealingLR, LinearLR

	from peft import LoraConfig
	from torch.optim import AdamW
	from xtuner.dataset import PikaDataset, ConcatDataset
	from xtuner.dataset.collate_fns import default_collate_fn
	from xtuner.dataset.map_fns import llava_map_fn, m3it_map_fn, template_map_fn_factory
	from xtuner.dataset.samplers import LengthGroupedSampler
	from xtuner.engine import DatasetInfoHook, EvaluateChatHook
	from xtuner.model import PikaModel, PikaVidEncoder
	from xtuner.utils import PROMPT_TEMPLATE


	#######################################################################
	# PART 1 Settings #
	#######################################################################
	# Model
	llm_name_or_path = 'lmsys/vicuna-13b-v1.5-16k'
	visual_encoder_name_or_path = 'apple/DFN5B-CLIP-ViT-H-14-378'
	# Specify the s2 pretrained pth
	pretrained_pth = 'work_dirs/13b_16k_s2/epoch_1.pth'

	prompt_template = PROMPT_TEMPLATE.vicuna
	max_length = 4096
	size = 378

	batch_size = 16 # per_device
	accumulative_counts = 1
	lr = 2e-4
	dataloader_num_workers = 0
	max_epochs = 1
	optim_type = AdamW
	betas = (0.9, 0.999)
	weight_decay = 0
	max_norm = 1 # grad clip
	warmup_ratio = 0.03

	# Save
	save_steps = 100
	save_total_limit = 2 # Maximum checkpoints to keep (-1 means unlimited)

	#######################################################################
	# PART 2 Model & Tokenizer & Image Processor #
	#######################################################################
	tokenizer = dict(
	type=AutoTokenizer.from_pretrained,
	pretrained_model_name_or_path=llm_name_or_path,
	trust_remote_code=True,
	padding_side='right')

	image_processor = dict(
	type=CLIPImageProcessor.from_pretrained,
	pretrained_model_name_or_path='laion/CLIP-ViT-bigG-14-laion2B-39B-b160k',
	trust_remote_code=True,
	size=size,
	crop_size=size)

	model = dict(
	type=PikaModel,
	freeze_llm=True,
	freeze_visual_encoder=True,
	pretrained_pth=pretrained_pth,
	llm=dict(
	type=AutoModelForCausalLM.from_pretrained,
	pretrained_model_name_or_path=llm_name_or_path,
	trust_remote_code=True,
	torch_dtype=torch.float16,
	quantization_config=dict(
	type=BitsAndBytesConfig,
	load_in_4bit=True,
	load_in_8bit=False,
	llm_int8_threshold=6.0,
	llm_int8_has_fp16_weight=False,
	bnb_4bit_compute_dtype=torch.float16,
	bnb_4bit_use_double_quant=True,
	bnb_4bit_quant_type='nf4')),
	llm_lora=dict(
	type=LoraConfig,
	r=512,
	lora_alpha=256,
	lora_dropout=0.05,
	bias='none',
	task_type='CAUSAL_LM'),
	visual_encoder=dict(
	type=CLIPVisionModel.from_pretrained,
	pretrained_model_name_or_path=visual_encoder_name_or_path),
	visual_encoder_lora=dict(
	type=LoraConfig,
	r=64,
	lora_alpha=16,
	lora_dropout=0.05,
	bias='none'))

	#######################################################################
	# PART 3 Dataset & Dataloader #
	#######################################################################
	llava_dataset = dict(
	type=PikaDataset,
	data_path='./data/image_finetune/llava_v1_5_mix665k',
	image_folder='./data/image_data',
	tokenizer=tokenizer,
	image_processor=image_processor,
	dataset_map_fn=llava_map_fn,
	template_map_fn=dict(
	type=template_map_fn_factory, template=prompt_template),
	max_length=max_length,
	pad_image_to_square=True)

	train_dataset = dict(
	type=PikaDataset,
	data_path='./data/stage_3_part2',
	image_folder='./data/image_data',
	tokenizer=tokenizer,
	image_processor=image_processor,
	dataset_map_fn=llava_map_fn,
	template_map_fn=dict(
	type=template_map_fn_factory, template=prompt_template),
	max_length=max_length,
	pad_image_to_square=True)

	train_dataset = dict(
	type=ConcatDataset,
	datasets=[
	llava_dataset,
	train_dataset])

	train_dataloader = dict(
	batch_size=batch_size,
	num_workers=dataloader_num_workers,
	dataset=train_dataset,
	sampler=dict(type=DefaultSampler, shuffle=True),
	# sampler=dict(
	# type=LengthGroupedSampler,
	# length_property='modality_length',
	# per_device_batch_size=batch_size * accumulative_counts),
	collate_fn=dict(type=default_collate_fn))

	#######################################################################
	# PART 4 Scheduler & Optimizer #
	#######################################################################
	# optimizer
	optim_wrapper = dict(
	type=AmpOptimWrapper,
	optimizer=dict(
	type=optim_type, lr=lr, betas=betas, weight_decay=weight_decay),
	clip_grad=dict(max_norm=max_norm, error_if_nonfinite=False),
	accumulative_counts=accumulative_counts,
	loss_scale='dynamic',
	dtype='float16')

	# learning policy
	# More information: https://github.com/open-mmlab/mmengine/blob/main/docs/en/tutorials/param_scheduler.md # noqa: E501
	param_scheduler = [
	dict(
	type=LinearLR,
	start_factor=1e-5,
	by_epoch=True,
	begin=0,
	end=warmup_ratio * max_epochs,
	convert_to_iter_based=True),
	dict(
	type=CosineAnnealingLR,
	eta_min=0.0,
	by_epoch=True,
	begin=warmup_ratio * max_epochs,
	T_max=max_epochs,
	convert_to_iter_based=True)
	]

	# train, val, test setting
	train_cfg = dict(by_epoch=True, max_epochs=max_epochs, val_interval=1)

	#######################################################################
	# PART 5 Runtime #
	#######################################################################
	# Evaluate the generation performance during the training
	evaluation_freq = 100
	SYSTEM = ''
	evaluation_images = 'https://llava-vl.github.io/static/images/view.jpg'
	evaluation_inputs = ['请描述一下这张照片', 'Please describe this picture']


	# Log the dialogue periodically during the training process, optional
	custom_hooks = [
	dict(type=DatasetInfoHook, tokenizer=tokenizer),
	dict(
	type=EvaluateChatHook,
	tokenizer=tokenizer,
	image_processor=image_processor,
	every_n_iters=evaluation_freq,
	evaluation_inputs=evaluation_inputs,
	evaluation_images=evaluation_images,
	system=SYSTEM,
	prompt_template=prompt_template)
	]

	# configure default hooks
	default_hooks = dict(
	# record the time of every iteration.
	timer=dict(type=IterTimerHook),
	# print log every 100 iterations.
	logger=dict(type=LoggerHook, interval=10),
	# enable the parameter scheduler.
	param_scheduler=dict(type=ParamSchedulerHook),
	# save checkpoint per epoch.
	checkpoint=dict(type=CheckpointHook, interval=1),
	# set sampler seed in distributed evrionment.
	sampler_seed=dict(type=DistSamplerSeedHook),
	)

	# configure environment
	env_cfg = dict(
	# whether to enable cudnn benchmark
	cudnn_benchmark=False,
	# set multi process parameters
	mp_cfg=dict(mp_start_method='fork', opencv_num_threads=0),
	# set distributed parameters
	dist_cfg=dict(backend='nccl'),
	)

	# set visualizer
	visualizer = None

	# set log level
	log_level = 'INFO'

	# load from which checkpoint
	load_from = None

	# whether to resume training from the loaded checkpoint
	resume = False

	# Defaults to use random seed and disable `deterministic`
	randomness = dict(seed=None, deterministic=False)