کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
510524 865770 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parallel performance of large scale impact simulations on Linux cluster super computer
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Parallel performance of large scale impact simulations on Linux cluster super computer
چکیده انگلیسی

Three-dimensional analyses with fine solid meshes have become quite common in large deformation impact problems. As the complexity of the problem increases in size and resolution, it is necessary to utilize a parallel dynamic code on parallel systems. The purpose of this paper is to present the parallel performance of a new FEM impact code tested on self-made Linux cluster supercomputer for high speed impact problems. Almost ideal speed-up is achieved for the fixed and scaled Taylor bar model even up to 256 CPUs, although some inefficiency is still identified in parallel FE calculation resulting from the increased communication overhead. In the case of metal sphere impacting to oblique plate, the overall speed-up increases continuously even up to 128 CPUs. Investigation of elapsed time of each part reveals that most of the inefficiency comes from the load imbalance of contact. The two benchmark problems demonstrate the possibility of large scale three-dimensional dynamic simulations within a reasonable computational time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 84, Issues 10–11, April 2006, Pages 732–741
نویسندگان
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