基于CPU-GPU异构平台的高层结构地震响应分析方法研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (13) : 86-91.

论文

基于CPU-GPU异构平台的高层结构地震响应分析方法研究

李红豫，滕军，李祚华

作者信息 +

Analysis method for seismic response of high-rise structure based on CPU-GPU heterogeneous platform

LI Hong-yu, TENG Jun, LI Zuo-hua

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摘要

为了解决传统的串行有限元分析方法计算耗时多精度低的问题，基于GPU并行计算能力在CUDA架构下建立了一套兼顾精度和效率的高层结构有限元分析的CPU-CPU的异构平台。基于CPU-GPU异构平台研究了高层结构地震响应算法，将整个时间步积分在GPU中计算完成，每一时间步下利用基于GPU的预处理共轭梯度迭代法求解线性方程组获得该时刻的位移，最终实现了基于GPU的Newmark-β法。通过算例验证了本文所提方法的高精度、高效率。

Abstract

In order to deal with the problem of much time consumption and low precision in the process of traditional serial finite element analysis, a CPU-GPU heterogeneous platform relying on the CUDA framework paralleled calculating technology was developed, which can satisfy the requirements of high precision and efficiency in the aspect of finite element analysis. Algorithms of the seismic response of high-rise structure were studied and specified based on the CPU-GPU heterogeneous platform. All time-step integration was implemented on the GPU; furthermore, precondition conjugate gradient method was introduced in the procedures of solving the linear equations in each time-step integration. Eventually, Newmark-β algorithm based on GPU was realized. High precision and efficiency were successfully proved by numerical examples.

导出引用

李红豫;滕军;李祚华. 基于CPU-GPU异构平台的高层结构地震响应分析方法研究[J]. 振动与冲击, 2014, 33(13): 86-91

LI Hong-yu;TENG Jun;LI Zuo-hua. Analysis method for seismic response of high-rise structure based on CPU-GPU heterogeneous platform[J]. Journal of Vibration and Shock, 2014, 33(13): 86-91