transformers pytorch mpt text-generation Composer MosaicML llm-foundry custom_code dataset:competition_math dataset:knkarthick/dialogsum dataset:mosaicml/dolly_hhrlhf dataset:duorc dataset:emozilla/quality dataset:scrolls/summ_screen_fd dataset:spider arxiv:2205.14135 arxiv:2108.12409 arxiv:2010.04245 license:apache-2.0 autotrain_compatible text-generation-inference region:us