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Liu Liu is an Assistant Professor in the Department of Electrical, Computer, and Systems Engineering and the Department of Computer Science at Rensselaer Polytechnic Institute.
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Fast Matrix Multiply on an Apple GPU
percisely.xyztutorialpositiveOct 10, 2025
An optimized matrix multiplication implementation on Apple GPU achieves performance parity with Apple's Metal Performance Shaders through use of undocumented simdgroup_async_copy instruction, reaching 2.5 trillion 32-bit floating point operations per second on a 2022 MacBook Air.
“Co-created metal-flash-attention implementation that influenced fast matrix multiplication program on Apple GPU.”
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