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Glossary

Expert parallelism

Splitting a mixture-of-experts model across GPUs by expert rather than by layer, so each GPU holds a subset of the experts and tokens are routed to the right device.

Large MoE models such as Inkling 2 Small (8 of 384 experts active per token) are served with expert parallelism, often combined with tensor parallelism. Some model cards require the two degrees to be equal, which constrains which GPU counts and topologies work. If a serving framework has not merged support for a model's parallelism scheme, the weights are downloadable but not yet deployable.

Related terms

ComputeGPUInferenceMixture of experts (MoE)NVFP4

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