transformers pytorch llama text-generation instruction-following fine-tuned llama2 causal-language-model QLoRa 4-bit-quantization low-memory training-optimized en dataset:mlabonne/guanaco-llama2-1k base_model:NousResearch/Llama-2-7b-chat-hf base_model:finetune:NousResearch/Llama-2-7b-chat-hf license:mit autotrain_compatible text-generation-inference endpoints_compatible region:us