Unverified50% confidenceFactExact time
The main bottleneck in MoE model serving lies in the irregular memory access and load imbalance caused by expert routing, which requires the scheduler and kernels to work together.
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50%
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Long-term
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10/17/2026
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Related Claims
UnverifiedDuring the Expert routing stage of MoE models, dispatching different threads to different Experts causes severe Warp divergence issues.79% similarUnverifiedThe MoE architecture faces the problem of uneven expert load, with vastly different activation frequencies among different experts, easily causing some devices to be idle while others are overloaded.76% similarUnverifiedThe Top-K routing strategy in MoE is prone to causing a small number of experts to be overused (the expert collapse problem), which requires techniques such as auxiliary load-balancing loss functions to address.76% similarUnverifiedMoE kernels need to simultaneously address both compute regularization and load balancing, as uneven load across experts drags down overall utilization.74% similarVerifiedAlthough MoE models infer quickly, they have higher demands on VRAM and memory capacity because all expert parameters must be loaded, representing a trade-off between speed and capacity.73% similar
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