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llama.cpp patch speeds up one RTX 5090 matrix multiply 4.5x

Jeff Bolz's narrow tiles cut the KHR cooperative-matrix case at M=4096, K=14336, N=16 from 325.49 to 72.36 microseconds on an RTX 5090.

By RuntimeWire Staff · Published Nov 14th, 2026, 7:43pm CT

AI-generated illustration of a llama beside a laptop displaying code, with a mug and notebook on the desk and plants and books in the background.

Jeff Bolz's narrow tiles cut the KHR cooperative-matrix case at M=4096, K=14336, N=16 from 325.49 to 72.36 microseconds on an RTX 5090.

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