peft tensorboard safetensors gemma alignment-handbook trl dpo generated_from_trainer dataset:RedaAlami/PKU-SafeRLHF-Processed base_model:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 base_model:adapter:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 license:other 4-bit bitsandbytes region:us