PEFT How to use FarziBuilder/NeoXAdapter with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("EleutherAI/gpt-neox-20b")
model = PeftModel.from_pretrained(base_model, "FarziBuilder/NeoXAdapter") 
