transformers pytorch mpt text-generation Composer MosaicML llm-foundry hosted inference 8 bit 8bit 8-bit custom_code dataset:mosaicml/dolly_hhrlhf arxiv:2205.14135 arxiv:2108.12409 arxiv:2010.04245 license:cc-by-sa-3.0 autotrain_compatible text-generation-inference endpoints_compatible region:us