This looks amazing @rasbt! Out of curiosity, is your primary goal to cultivate understanding and demystify, or to encourage people to build their own small models tailored to their needs?
Now, the secondary goal is, of course, also to help people with building their own LLMs if they need to. The book will code the whole pipeline, including pretraining and finetuning, but I will also show how to load pretrained weights because I don't think it's feasible to pretrain an LLM from a financial perspective. We are coding everything from scratch in this book using GPT-2-like LLM (so that we can load the weights for models ranging from 124M that run on a laptop to the 1558M that runs on a small GPU). In practice, you probably want to use a framework like HF transformers or axolotl, but I hope this from-scratch approach will demystify the process so that these frameworks are less of a black box.
>Introducing MPT-7B, the first entry in our MosaicML Foundation Series. MPT-7B is a transformer trained from scratch on 1T tokens of text and code. It is open source, available for commercial use, and matches the quality of LLaMA-7B. MPT-7B was trained on the MosaicML platform in 9.5 days with zero human intervention at a cost of ~$200k
Just wondering are going to include any specific section or chapter in your LLM book on RAG? I think it will be very much a welcome addition for the build your own LLM crowd.