An OpenCL Approach of Prestack Kirchhoff Time Migration Algorithm on General Purpose GPU

Author

Peiyuan Sun ; Xiaohua Shi

Author_Institution

Sch. of Comput. Sci. & Eng., Beihang Univ., Beijing, China

fYear

2012

fDate

14-16 Dec. 2012

Firstpage

179

Lastpage

183

Abstract

OpenCL is an open standard for portable, parallel programming across heterogeneous platforms. In this paper, we presented how to implement and optimize Prestack Kirchhoff Time Migration algorithm, which is one of the most widely adopted imaging methods for seismic data processing, on OpenCL and GPGPU. We introduced how to port the original CUDA program to OpenCL, 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 is 8.9 times faster than its original CPU version on AMD245 2.9HGZ, and almost as fast as its CUDA version.

Keywords

data handling; geophysical techniques; geophysics computing; graphics processing units; parallel algorithms; parallel architectures; parallel programming; seismology; software performance evaluation; software portability; CUDA program; GPGPU; NVidia 8800GT; OpenCL program; Prestack Kirchhoff time migration algorithm; competitive performance; general purpose GPU; heterogeneous platforms; imaging methods; open standard; portable parallel programming; seismic data processing; Arrays; Graphics processing units; Kernel; Performance evaluation; Programming; Vectors; GPGPU; Kirchhoff Migration; OpenCL;

fLanguage

English

Publisher

ieee

Conference_Titel

Parallel and Distributed Computing, Applications and Technologies (PDCAT), 2012 13th International Conference on

Conference_Location

Beijing

Print_ISBN

978-0-7695-4879-1

Type

conf

DOI

10.1109/PDCAT.2012.51

Filename

6589260