peft tensorboard safetensors llama alignment-handbook trl sft generated_from_trainer dataset:GaetanMichelet/Chat_summary_60_FT base_model:meta-llama/Meta-Llama-3-8B-Instruct base_model:adapter:meta-llama/Meta-Llama-3-8B-Instruct license:llama3 4-bit bitsandbytes region:us