Hardware Acceleration of Simulated Annealing of Spin Glass by RRAM Crossbar Array

Simulated annealing (SA) was successfully implemented and accelerated by in-memory computing hardware/software package using RRAM crossbar arrays to solve a spin glass problem. Ta ₂ O ₅ -based RRAM array and stochastic Cu-based CBRAM devices were utilized for calculation of the Hamiltonian and decision of spin-flip events, respectively. A parallel spin-flip strategy was demonstrated to further accelerate the SA algorithm.