3D Isotropic Acoustic Finite-Difference Wave Equation Code: A Many-Core Processor Implementation and Analysis

By Sunny L Gogar, Leonardo Borges, Philippe Thierry, Published: 01/06/2017, Last Updated: 01/06/2017

Finite difference is a simple and efficient mathematical tool that helps solve differential equations. In this paper, we solve an isotropic acoustic 3D wave equation using explicit, time domain finite differences.

Propagating seismic waves remains a compute-intensive task even when considering the simplest expression of the wave equation. In this paper, we explain how to implement and optimize a three-dimension isotropic kernel with finite differences to run on the Intel® Xeon® processor v4 Family and the Intel® Xeon Phi™ processor.

We also give a brief overview of new memory hierarchy introduced with the Intel® Xeon Phi™ processor and the different settings and modifications of the source code needed to incorporate the use of C/C++ High Bandwidth Memory (HBM) application programming interfaces (APIs) for doing dynamic storage allocation from Multi-Channel DRAM (MCDRAM).

Attachment Size
iso-paper.pdf 2.1 MB

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804