|Achievements up to M18
A summary on the gains obtained within ChEESE
First version of PyCOMPs-based BackTrackBB including signal processing optimization (initially serial execution) able to exploit multiple cluster nodes simultaneously and making use of PyCOMPSs task decorators.
Scalability tests and memory usage analysis: performed on MareNostrum4 cluster of BSC using different job configurations and case-studies of different dimensions.
Scalability test configuration: Data – synthetic dataset: 1-hour long continuous data, 100 sps sampling rate recorded at 100 stations (single component); Architecture – MareNostrum4 cluster of BSC, master worker architecture using 4, 8 and 16 nodes with 48 CPU /node.
Memory usage analysis: Data – synthetic datasets with different dimensions (number of stations and grid discretization); Architecture – MareNostrum4 cluster of BSC high memory (7928 MB/core) and standard nodes (1880 MB/core)
Synthetic toy model – 7-day, 100 sps sampled, single-component, continuous data from 100 stations. Covered surface area ~ 50 km × 50 km.
Real-case data analysis of slow earthquakes activity in southwest Japan – 4-year long seismic recordings sampled at 100 sps from 33 (3-component) Hi-net stations. Covered surface area ~300 km × 190 km.
|Related work and further information
Related academic papers:
Poiata, N., C., Satriano, J.-P.Vilotte, P., Bernard, and K. Obara (2016). Multi-band array detection and location of seismic sources recorded by dense seismic networks, Geophys. J. Int., 205(3), 1548–1573.
Li, L., Tan, J., Schwartz, B., Stanek, F., Poiata, N., Peidong, S., Diekmann, L., L., Eisner, and D., Gajewski (2020). Recent advances and challenges of waveform-based seismic location methods at multiple scales, Reviews of Geophysics, 58, e2019RG000667.
Poiata, N., C., J.-P.Vilotte, N., Shapiro, M. Supino and K. Obara (2020). Complexity of Deep Low-Frequency Earthquake Activity Along the Subducting Slab in Western and Central Shikoku, Japan (in preparation).
N. Poiata, J. Conejero, R.M. Badea and J.-P. Vilotte, (2020) BackTrackBB data-streaming workflow for seismic source location using PyCOMPSs parallel computational framework (in preparation).
Website related to real use case:
Website related to BackTrackBB documentation: http://backtrackbb.readthedocs.io/