PEFT How to use umer07/fathom-mixtral with PEFT:
from peft import PeftModel
from transformers import AutoModelForCausalLM
base_model = AutoModelForCausalLM.from_pretrained("mistralai/Mixtral-8x7B-Instruct-v0.1")
model = PeftModel.from_pretrained(base_model, "umer07/fathom-mixtral") 
