[r/ML] [P] Fused MoE Dispatch in Pure Triton: Beating CUDA-Optimized Megablocks at Inference Batch Sizes

Summary

A new fused Mixture-of-Experts (MoE) dispatch kernel, built entirely in pure Triton, has shown significant performance gains over Stanford's CUDA-optimized Megablocks for MoE inference at common batch sizes. This innovation, which includes a fused gate+up projection, improves efficiency for models like Mixtral-8x7B by reducing memory usage and offers enhanced portability compared to vendor-specific CUDA code.

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