Research on Seismic Connectivity Reliability Analysis of Water Distribution System Based on CUDA

To improve the seismic connectivity reliability (SCR) analysis efficiency of water distribution systems (WDS) based on Monte Carlo (MC) simulation, quasi-Monte (QMC) method sampled by a low-discrepancy sequence is applied. Furthermore, parallel algorithm combined with breadth-first search for SCR WDS QMC and Compute Unified Device Architecture (CUDA) platform was proposed. A city taken as computational example, accuracy traditional MC were compared, influence Sobol pseudo-random number analysed. The results show that when 1,000,000 simulations are performed, maximum error calculation two methods 0.2%, can obtain six-fold speedup ratio compared serial method, indicating proposed correct, meets requirements, helps to efficiency. When same, simulation more accurate than those sequence. also achieves good acceleration effect in large-scale WDS.