کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
524334 868610 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of communication and synchronization on Amdahl’s law in multicore systems
ترجمه فارسی عنوان
اثر ارتباطات و هماهنگ سازی در قانون آمدیلا در سیستم های چند منظوره
کلمات کلیدی
چندگانه، مدل های تحلیلی عملکرد قانون امدال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی


• Effects of sequential-to-parallel synchronization on multicore performance analyzed.
• Effects of inter-core communication on multicore performance analyzed.
• A number of performance models are compared.
• A modification of Amdahl’s law is formulated.

This work analyses the effects of sequential-to-parallel synchronization and inter-core communication on multicore performance, speedup and scaling from Amdahl’s law perspective. Analytical modeling supported by simulation leads to a modification of Amdahl’s law, reflecting lower than originally predicted speedup, due to these effects. In applications with high degree of data sharing, leading to intense inter-core connectivity requirements, the workload should be executed on a smaller number of larger cores. Applications requiring intense sequential-to-parallel synchronization, even highly parallelizable ones, may better be executed by the sequential core. To improve the scalability and performance speedup of a multicore, it is as important to address the synchronization and connectivity intensities of parallel algorithms as their parallelization factor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Parallel Computing - Volume 40, Issue 1, January 2014, Pages 1–16
نویسندگان
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