Computing Prestack Kirchhoff time migration algorithm on OpenCL and GPGPU

Abstract

In seismic data processing, Prestack Kirchhoff time migration is a forming method ,and widely used . In this paper, we introduced how to port the original CUDA program to OpenCL ,and how to implement and optimize Prestack Kirchhoff Time Migration algorithm on OpenCL and General Purpose GPU, and how to optimize the OpenCL program to get the competitive performance comparing with the original CUDA version. Our OpenCL version of Kirchhoff Migration algorithm on NVidia 8800GT almost as fast as its CUDA version, its 8.9 times faster than original CPU version on AMD245 2.9HGZ.