FSDP and ZeRO let you train models too big for one GPU without splitting the compute. The signal is the ZeRO stages (what gets sharded at each level) and the communication you pay for it. Here is the answer.
Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.
FSDP and ZeRO let you train models too big for one GPU without splitting the compute. The signal is the ZeRO stages (what gets sharded at each level) and the communication you pay for it. Here is the answer.
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