PEFT How to use osbm/samsum-llama-quantized-first with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("huggyllama/llama-13b")
model = PeftModel.from_pretrained(base_model, "osbm/samsum-llama-quantized-first") 
