Parallelization of the TRIGRS model for rainfall-induced landslides using the message passing interface
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- Data Releases:
- USGS data release - TRIGRS version 2.1
- USGS data release - Serial and parallel versions of the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model (TRIGRS)
- USGS data release - Map and model input and output data covering N 40.0 40.375 and W 105.25 105.625 in the northern Colorado Front Range for analysis of debris flow initiation resulting from the storm of September 9 13, 2013
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Abstract
We describe a parallel implementation of TRIGRS, the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model for the timing and distribution of rainfall-induced shallow landslides. We have parallelized the four time-demanding execution modes of TRIGRS, namely both the saturated and unsaturated model with finite and infinite soil depth options, within the Message Passing Interface framework. In addition to new features of the code, we outline details of the parallel implementation and show the performance gain with respect to the serial code. Results are obtained both on commercial hardware and on a high-performance multi-node machine, showing the different limits of applicability of the new code. We also discuss the implications for the application of the model on large-scale areas and as a tool for real-time landslide hazard monitoring.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Parallelization of the TRIGRS model for rainfall-induced landslides using the message passing interface |
| Series title | Environmental Modelling and Software |
| DOI | 10.1016/j.envsoft.2016.04.002 |
| Volume | 81 |
| Year Published | 2016 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | 14 p. |
| First page | 122 |
| Last page | 135 |