Journal
COMPUTERS AND GEOTECHNICS
Volume 100, Issue -, Pages 84-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2018.04.011
Keywords
Finite-discrete element method (FDEM); General Purpose GPU computing; Rock fracturing; High performance computing (HPC)
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Funding
- Ontario Centres of Excellence (OCE)
- Natural Sciences and Engineering Research Council (NSERC)
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This paper presents a novel implementation of a hydro-mechanically coupled, finite-discrete element method (FDEM) optimized to exploit the computing parallelism of graphics processing units (GPUs). A co-processing approach is adopted with the control loop of FDEM executed serially on the CPU and compute-intensive tasks off-loaded to the GPU. A benchmarking study indicates speedups of up to 100x compared to sequential CPU execution. The implementation is validated by comparing 3D laboratory-scale rock fracturing simulations with experimental results. The effectiveness of the approach for practical rock engineering applications is demonstrated through the back analysis of a slope in a fractured rock mass.
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