Developer Builds Fast ARM Matrix Multiplication Using NEON Assembly on Apple M2

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A developer has published a technical walkthrough on DEV Community detailing how to implement optimized matrix multiplication on ARM processors using NEON assembly instructions. The project targets Apple's M2 chip, which has a theoretical single-threaded peak of 112 GFlops for 32-bit floating-point matrix operations. Starting from a basic reference implementation, the author progressively applies techniques such as multiple accumulators and output tiling across register banks to reduce pipeline stalls and improve compute intensity. Performance improved significantly with these optimizations, reaching 15.95 GFlops in an intermediate version, with further gains expected through tiling using the chip's 32 available 128-bit registers. The author plans a follow-up article covering more advanced ARM extensions, specifically SME and SVE2.

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Agentic Design System sandeep kumar patel Sep 19 Add Comment 1 min read

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