PEFT How to use ZappY-AI/phi2-math-orca with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("microsoft/phi-2")
model = PeftModel.from_pretrained(base_model, "ZappY-AI/phi2-math-orca") 
