VLSI Routing Optimization Using Hybrid PSO Based on Reinforcement Learning

Pradyut Nath, Sumagna Dey, Subhrapratim Nath, A. Shankar, J. Sing, Subir Kumar Sarkar
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引用次数: 0

Abstract

Rapid advances in Very Large-Scale Integration (VLSI) technology demand wire length minimization of the circuits in VLSI physical layer design to ensure routing optimization. With the growing dimension of the circuits and increased complexity, only transformation of VLSI routing problem into Non-Polynomial (NP) complete Rectilinear Minimal Spanning Tree (RMST) problem and solving it with traditional approaches results in non-optimal solutions. This brings the need for metaheuristic algorithms. Using metaheuristic algorithms, finding the optimal placement of Steiner points by approximation became easier to optimize the routing path, but sometime with major deviation. In this proposed work, A hybrid Particle swarm optimization (PSO) is used which optimizes and estimates using a value Iteration matrix, obtained using Reinforcement Learning (RL). This RL guided PSO generates much better solutions safely and with more consistency when compared with existing metaheuristic-based routing algorithms. The collected findings demonstrate that the proposed methodology has a lot of potential in VLSI routing optimization.
基于强化学习的混合粒子群算法的VLSI路由优化
超大规模集成电路(VLSI)技术的快速发展要求在VLSI物理层设计中电路的导线长度最小化,以确保路由优化。随着电路尺寸的增大和复杂度的提高,将VLSI路由问题转化为非多项式(NP)完全线性最小生成树(RMST)问题,再用传统方法求解,会得到非最优解。这带来了对元启发式算法的需求。采用元启发式算法,通过近似的方法寻找施泰纳点的最优位置,使得路径优化更加容易,但有时偏差较大。在本文提出的工作中,使用混合粒子群优化(PSO),它使用使用强化学习(RL)获得的值迭代矩阵进行优化和估计。与现有的基于元启发式的路由算法相比,RL引导的PSO生成了更好的解决方案,安全性更高,一致性更强。收集的结果表明,所提出的方法在VLSI路由优化中具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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