PEFT How to use kajol/mistral_math with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("TheBloke/zephyr-7B-alpha-GPTQ")
model = PeftModel.from_pretrained(base_model, "kajol/mistral_math") 
