Your question is RLHF and LLM Training Concepts. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain the differences between GRPO, PPO, and DPO, and describe the training parallelism approaches you know, including whether you have done multi-node LLM training and what packages you used.