A General-Purpose AXI Plug-and-Play Hyperdimensional Computing Accelerator

Jan 22, 2026 by Rocco Martino, Marco Pisani, M. Angioli, Marcello Barbirotta, A. Mastrandrea, A. Rosato, Mauro Olivieri (Electronics)

DOI 10.3390/electronics15020489

We built a plug-and-play, AXI4-compliant HDC accelerator IP that runs Binary Spatter Code as a standalone, host-agnostic module and ships with a Linux userspace C++ stack—scalable at synthesis time, DMA-driven for high throughput, and tuned for minimal area. Open-source RTL and software on GitHub; on a Zynq XC7Z020 we see primitive speedups up to 431× and end-to-end gains ~68× training / ~93× inference, making HDC practical to drop into heterogeneous SoCs.

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