摘要
计算时间较长和存储空间较大,是时域有限差分法在PC系统上求解声场问题的瓶颈。为解决该问题,我们研究了由数个PC机、计算机网络和MPI并行编程实现的并行时域有限差分算法及其在声场计算中的应用,并在此基础上对Bessel声场进行了仿真。结果表明:并行计算在声场的时域有限差分法算法中,能明显提高计算效率并降低对单个PC机存储空间的要求,而虚拟拓扑结构的优化,能够提高并行计算的效率。
The calculation of the acoustic field in PC system often costs much time and vast memory space.To solve the problem,the application of parallel finite difference fime domain(FDTD)method,which is realized by several personal computers and computer networks and MPI parallel programming were studied in the acoustic field calculation.The simulation result show that the method can increase calculation speed and decrease requirement of memory space of single PC greatly and the optimization of the virtual topology can increase calculation speed of the parallel FDTD method.
出处
《生物医学工程研究》
2006年第4期213-216,共4页
Journal Of Biomedical Engineering Research
基金
国家自然科学基金资助项目(60471057
60471012)
关键词
Bessel声场
时域有限差分算法
并行计算
消息传送接口
虚拟拓扑
Bessel ultrasonic
Finite difference time domain
Parallel calculation
Message passing interface
Virtual topology
