Your question is DP vs DDP vs FSDP Tradeoffs. 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 physical and architectural differences between Data Parallelism (DP), Distributed Data Parallel (DDP), and Fully Sharded Data Parallel (FSDP). When would you choose one over the other?