PEFT How to use luna-code/megengine-codegen-2B-mono-prefix with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("Salesforce/codegen-2B-mono")
model = PeftModel.from_pretrained(base_model, "luna-code/megengine-codegen-2B-mono-prefix") 
