transformers pytorch safetensors llama text-generation axolotl generated_from_trainer spectrum finetuning Deepspeed MultiGPU conversational arxiv:2406.06623 base_model:meta-llama/Meta-Llama-3-8B-Instruct base_model:finetune:meta-llama/Meta-Llama-3-8B-Instruct license:llama3 autotrain_compatible text-generation-inference endpoints_compatible region:us