Parallel processing of excavation in soils with randomly generated material properties

Lee Margetts, Michael A Hicks (Editor), Ronald BJ Brinkgreve (Editor), Alexander Rohe (Editor)

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Today, affordable high performance clusters enable engineers to carry out large nonlinear 3D analyses very quickly using parallel processing. It has been estimated that by 2018, a 1 Petaflop cluster (with 100,000 cores) will cost around $150,000; a price affordable by a reasonably sized engineering firm or University department. With these significant improvements in technology, it is becoming increasingly cost-effective to incorporate uncertainty into analyses, for example by undertaking Monte Carlo simulations with randomly generated soil properties. As each realisation is independent, it can be executed at the same time. For large models that require move memory than is available on a single core, each realisation can be solved by subdividing the problem over multiple cores. The authors will present results for an excavation problem using this two-level parallelisation strategy. The parallel software used, ParaFEM, has been recently updated to interface with a number of external tools including the RFEM library, the visualisation tool ParaView and the graph partitioner METIS. For a single realisation, ParaFEM can make good use of 32,000 cores and solve problems with 1 billion degrees of freedom.
    Original languageEnglish
    Title of host publicationNumerical Methods in Geotechnical Engineering
    EditorsMichael A Hicks, Ronald BJ Brinkgreve, Alexander Rohe
    Place of PublicationThe Netherlands
    PublisherCRC Press
    Publication statusPublished - 18 Jun 2014
    Event8th European Conference on Numerical Methods in Geotechnical Engineering - Delft, Holland
    Duration: 18 Jun 201420 Jun 2014

    Conference

    Conference8th European Conference on Numerical Methods in Geotechnical Engineering
    CityDelft, Holland
    Period18/06/1420/06/14

    Fingerprint

    Dive into the research topics of 'Parallel processing of excavation in soils with randomly generated material properties'. Together they form a unique fingerprint.

    Cite this