PEFT How to use peft-internal-testing/opt-350m-lora with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("facebook/opt-350m")
model = PeftModel.from_pretrained(base_model, "peft-internal-testing/opt-350m-lora")