FWIW Zero-3 refers to a common strategy for sharding model components across GPUs (commonly called FSDP-2, Full Sharded Data Parallel). The "3" is the level of sharding (how much stuff to distribute across GPUs, e.g. just weights, versus optimizer state as well, etc.)
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FWIW Zero-3 refers to a common strategy for sharding model components across GPUs (commonly called FSDP-2, Full Sharded Data Parallel). The "3" is the level of sharding (how much stuff to distribute across GPUs, e.g. just weights, versus optimizer state as well, etc.)