Problem
Research questions and friction points this paper is trying to address.
Digital Ising Accelerator
Pegasus Connectivity
Optimization
A 28nm 27,648-Spin Multichip Digital Ising Accelerator with Pegasus Connectivity
🤖 AI Summary
该研究通过28nm的数字Ising加速器，利用Pegasus连接和时间复用自旋更新阵列，提高了求解大规模优化问题的速度与精度。
📝 Abstract
We present a 28nm digital Ising accelerator with 27,648 spins across four chips. A time-multiplexed spin-update array with local SRAM and scheduled interchip transfers delivers 41.5G updates/s at 1.2pJ/update. Degree-15 Pegasus connectivity and 10b coefficients increase native connectivity and precision over degree-8, 5b multichip annealers. Programmable couplings support optimization and probabilistic logic, with a four-chip planted-MaxCut trace reaching the solution for 27,069 nodes in 3.3$\mu$s.
Innovation
Methods, ideas, or system contributions that make the work stand out.
28nm digital Ising accelerator
Pegasus connectivity
time-multiplexed spin-update array
programmable couplings
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