gguf ggml quantized q2_k q3_k_m q4_k_m q5_k_m q6_k q8_0 text-generation base_model:mediocredev/open-llama-3b-v2-instruct base_model:quantized:mediocredev/open-llama-3b-v2-instruct license:apache-2.0 region:us