کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6933871 867778 2013 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct numerical simulation of turbulence using GPU accelerated supercomputers
ترجمه فارسی عنوان
شبیه سازی مستقیم عددی آشفتگی با استفاده از ابر رایانه های شتاب دهنده گرافیکی
کلمات کلیدی
شبیه سازی مستقیم عددی، چند پردازنده گرافیکی، آشفتگی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
Direct numerical simulations of turbulence are optimized for up to 192 graphics processors. The results from two large GPU clusters are compared to the performance of corresponding CPU clusters. A number of important algorithm changes are necessary to access the full computational power of graphics processors and these adaptations are discussed. It is shown that the handling of subdomain communication becomes even more critical when using GPU based supercomputers. The potential for overlap of MPI communication with GPU computation is analyzed and then optimized. Detailed timings reveal that the internal calculations are now so efficient that the operations related to MPI communication are the primary scaling bottleneck at all but the very largest problem sizes that can fit on the hardware. This work gives a glimpse of the CFD performance issues will dominate many hardware platform in the near future.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 235, 15 February 2013, Pages 241-257
نویسندگان
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