QuakeCoRE ground motion simulation computational workflow

Sung Bae, Viktor Polak, Richard Clare, Brendon A. Bradley, & Hoby N. Razafindrakoto

Published August 24, 2016, SCEC Contribution #6582, 2016 SCEC Annual Meeting Poster #350

We present the ground motion simulation computational workflow that has been developed and is currently in use by QuakeCoRE researchers. The amount of data and complexity of computation make the large-scale ground motion simulations practically impossible to run on a researcher's workstation. QuakeCoRE started collaboration with New Zealand eScience Infrastructure (NeSI), the national high performance computing (HPC) provider, to gain the necessary computational capacity and execution speed.

The ground motion simulation code runs massively in parallel taking three key inputs (rupture model, velocity model and station information) that are constantly refined through many runs followed by extensive post-processing analysis.

The complete workflow has been recently successfully migrated to NIWA's Fitzroy cluster and QuakeCoRE has secured 1.2 million core hours that will be essential for large-scale simulations, such as the Alpine Fault rupture scenarios.

We simplified the workflow making it easier for new users to learn, and minimized the need for user interaction by automating the process pipeline. Augmenting the computing power from HPC, this streamlined workflow significantly improves simulation productivity.

We plan to develop a new automated process to enable a near-real time earthquake simulation upon an event of a major earthquake.

Citation
Bae, S., Polak, V., Clare, R., Bradley, B. A., & Razafindrakoto, H. N. (2016, 08). QuakeCoRE ground motion simulation computational workflow. Poster Presentation at 2016 SCEC Annual Meeting.

Related Projects & Working Groups
Computational Science (CS)