transformers gguf llama-factory full diffusion dataset:bigcode/starcoderdata dataset:cerebras/SlimPajama-627B arxiv:2410.17891 base_model:meta-llama/Llama-2-7b-hf base_model:quantized:meta-llama/Llama-2-7b-hf license:apache-2.0 endpoints_compatible region:us