peft tensorboard safetensors trl sft generated_from_trainer pytorch Mistral text-generation conversational en dataset:HuggingFaceH4/ultrachat_200k dataset:openbmb/UltraFeedback dataset:gsm8k base_model:mistralai/Mistral-7B-v0.1 base_model:adapter:mistralai/Mistral-7B-v0.1 license:apache-2.0 region:us