New B300 FP4 Attention Kernels Deliver 1.69x Speedup
tuananh_org · reddit · 2026-07-14
Someone shared a set of new FP4 attention kernels for the B300, claiming up to a 1.69x speed improvement compared to FA4.
This update is fundamentally about inference/operator-level performance optimization rather than the models themselves. If accurate, it indicates substantial room for optimizing attention implementations on new hardware platforms, particularly along low-precision pathways.
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