基于申威众核处理器的混合并行遗传算法

传统遗传算法求解计算密集型任务时，适应度函数的执行时间增加相当快，致使当种群规模或者进化代数增大时，算法的收敛速度非常缓慢。基于此，设计了"粗粒度-主从式"混合式并行遗传算法（HBPGA），并在目前TOP500上排名第一的超级计算机神威"太湖之光"平台上实现。该算法模型采用两级并行架构，结合了MPI和Athread两种编程模型，与传统在单核或者一级并行构架的多核集群上实现的遗传算法相比，在申威众核处理器上实现了二级并行，并得到了更好的性能和更高的加速比。实验中，当从核数为16×64时，最大加速比达到544，从核加速比超过31。

Hybrid parallel genetic algorithm based on Sunway many-core processors

When the traditional genetic algorithm is used to solve the computation-intensive task, the execution time of the fitness function increases rapidly, and the convergence rate of the algorithm is very low when the population size or generation increases. A "coarse-grained combined with master-slave" HyBrid Parallel Genetic Algorithm (HBPGA) was designed and implemented on Sunway "TaihuLight" supercomputer which is ranked first in the latest TOP500 list. Two-level parallel architecture was used and two different programming models, MPI and Athread were combined. Compared with the traditional genetic algorithm implemented on single-core or multi-core cluster with single-level parallel architecture, the algorithm using two-level parallel architecture was implemented on the Sunway many-core processors, better performance and higher speedup ratio were achieved. In the experiment, when using 16×64 CPEs (Computing Processing Elements), the maximum speedup can reach 544, and the CPE speedup ratio is more than 31.