llama-2-7b-hf-lora-oki10p

Llama-2 model fine tuning (TREX-Lab at Seoul Cyber University)

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Summary

• Base Model : meta-llama/Llama-2-7b-hf
• Dataset : heegyu/open-korean-instructions (10%)
• Tuning Method
  • PEFT(Parameter Efficient Fine-Tuning)
  • LoRA(Low-Rank Adaptation of Large Language Models)
• Related Articles : https://arxiv.org/abs/2106.09685
• Fine-tuning the Llama2 model with a random 10% of Korean chatbot data (open Korean instructions)
• Test whether fine tuning of a large language model is possible on A30 GPU*1 (successful)

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• Developed by: [TREX-Lab at Seoul Cyber University]
• Language(s) (NLP): [Korean]
• Finetuned from model : [meta-llama/Llama-2-7b-hf]

Fine Tuning Detail

• alpha value 16
• r value 64 (it seems a bit big...@@)

peft_config = LoraConfig(
    lora_alpha=16,
    lora_dropout=0.1,
    r=64,
    bias='none',
    task_type='CAUSAL_LM'
)

• Mixed precision : 4bit (bnb_4bit_use_double_quant)

bnb_config = BitsAndBytesConfig(
    load_in_4bit=True,
    bnb_4bit_use_double_quant=True,
    bnb_4bit_quant_type='nf4',
    bnb_4bit_compute_dtype='float16',
)

• Use SFT trainer (https://huggingface.co/docs/trl/sft_trainer)

trainer = SFTTrainer(
    model=peft_model,
    train_dataset=dataset,
    dataset_text_field='text',
    max_seq_length=min(tokenizer.model_max_length, 2048),
    tokenizer=tokenizer,
    packing=True,
    args=training_args
)

Train Result

time taken : executed in 2d 0h 17m

TrainOutput(global_step=2001,
            training_loss=0.6940358212922347,
            metrics={
               'train_runtime': 173852.2333,
               'train_samples_per_second': 0.092,
               'train_steps_per_second': 0.012,
               'train_loss': 0.6940358212922347,
               'epoch': 3.0})