کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
235615 465642 2015 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hybrid parallelization of the LIGGGHTS open-source DEM code
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Hybrid parallelization of the LIGGGHTS open-source DEM code
چکیده انگلیسی


• An MPI/OpenMP hybrid parallelization was implemented into the LIGGGHTS DEM code.
• We present three case studies to illustrate strengths and weaknesses of the approach.
• The hybrid parallelization simplifies load balancing and reduces MPI communication.
• MPI-only simulations are matched or outperformed by up to 44% in typical test cases.

This work presents our efforts to implement an MPI/OpenMP hybrid parallelization of the LIGGGHTS open-source software package for Discrete Element Methods (DEM). We outline the problems encountered and the solutions implemented to achieve scalable performance using both parallelization models. Three case studies, including two real-world applications with up to 1.5 million particles, were evaluated and demonstrate the practicality of this approach. In these examples, better load balancing and reduced MPI communication led to speed increases of up to 44% compared to MPI-only simulations.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 278, July 2015, Pages 234–247
نویسندگان
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