Full-waveform inversion on heterogeneous HPC systems

25Citations
Citations of this article
43Readers
Mendeley users who have this article in their library.

Abstract

We present a spectral-element implementation of full seismic waveform inversion for large heterogeneous HPC systems. In this we address the optimal parallelisation configurations of individual simulations, the large I/O requirements of adjoint simulations, and the scheduling of large numbers of forward and adjoint solves, typical for realistic inversions. Using GPU accelerators allows us to achieve a 3.5-4 times performance improvement over the best known homogeneous implementation. We achieve GPU memory throughput varying from 60 to 80% of the peak bandwidth, thus providing good utilisation of hardware resources. We demonstrate the practical applicability of our developments in a real-data application in the western Mediterranean. With the help of GPU accelerators, we are able to model and invert seismic wave propagation in a frequency band that is broader than permitted by the use of CPUs alone, which helps bridging the traditional gap between crustal and mantle tomography.

Cite

CITATION STYLE

APA

Gokhberg, A., & Fichtner, A. (2016). Full-waveform inversion on heterogeneous HPC systems. Computers and Geosciences, 89, 260–268. https://doi.org/10.1016/j.cageo.2015.12.013

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free