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dc.contributor.author배대성-
dc.date.accessioned2018-07-04T06:00:48Z-
dc.date.available2018-07-04T06:00:48Z-
dc.date.issued2017-09-
dc.identifier.citationADVANCES IN ENGINEERING SOFTWARE, v. 115, Page. 87-102en_US
dc.identifier.issn0965-9978-
dc.identifier.issn1873-5339-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0965997817304908-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/72348-
dc.description.abstractThis research proposes an implementation of effective direct linear equation solver for mechanical multi-body dynamics analysis. The proposed method focuses on the solvability for any size of GPU memory and scalability for any number of GPUs by using BFS-based traversal. A multi-level tree is divided into as many sub-trees as a GPU number by using the nested dissection, each of which is assigned to each GPU. Balanced graph bisection, additional sub-trees, and work stealing lead to minimum idle GPU computing time. Numerical experiments have been performed to decide the optimal maximum block size. Three mechanical models and the other three matrices from UF collection have been solved to show the effectiveness of the proposed method. Two different kinds of 4 GPUs, GeForce GTX 460 and GTX TITAN BLACK, are involved in this experiment. The proposed method shows a good solvability even when the test GPU memory is dozens of times smaller than the required data size for numerical factorization. The proposed optimization algorithm presents a good scalability on the number of GPUs. The performance results are compared with those obtained from CHOLMOD included in SuiteSparse library.en_US
dc.description.sponsorshipThis work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 2017-0-00350, Shape Pattern Modeling Method based on 3D CAD and integration Analysis Platform Development for Manufacturing Engineering).en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCI LTDen_US
dc.subjectImplicit integrationen_US
dc.subjectLinear equation solveren_US
dc.subjectNested dissectionen_US
dc.subjectMulti-body dynamicsen_US
dc.subjectMulti-GPUen_US
dc.titleAn improved direct linear equation solver using multi-GPU in multi-body dynamicsen_US
dc.typeArticleen_US
dc.relation.volume115-
dc.identifier.doi10.1016/j.advengsoft.2017.09.001-
dc.relation.page87-102-
dc.relation.journalADVANCES IN ENGINEERING SOFTWARE-
dc.contributor.googleauthorJung, Ji-Hyun-
dc.contributor.googleauthorBae, Dae-Sung-
dc.relation.code2017004112-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MECHANICAL ENGINEERING-
dc.identifier.piddsbae-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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