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Exploiting the parallelism of multidimensional wave digital algorithms on multicore computers

机译：在多核计算机上利用多维波数字算法的并行性

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摘要

Multidimensional wave digital algorithms for numerical integration of partial differential equations exhibit not only important robustness properties, but also a massive amount of parallelism. As the technology limit of heat dissipation stalls a further increase of clock rates, modern CPUs incorporate multiple cores for parallel computation. In this paper, a safe and efficient multithreading concept is presented to exploit the multicore architecture for multidimensional wave digital algorithms. Context switching and synchronization overhead is investigated as well as effects of unfair operating system thread scheduling due to unequal cache sharing of cores. Simulation results for the nonlinear Euler equations confirm the efficiency of the proposed setup on a 1-core, 4-core and a 2 × 4-core system. Keywords Numerical integration - Partial differential equations - Wave digital algorithms - Parallel processing - Multicore processors - Multithreading
机译：用于偏微分方程数值积分的多维波数字算法不仅具有重要的鲁棒性，而且还具有大量的并行性。随着散热技术的限制使时钟速率进一步增加，现代CPU集成了多个内核进行并行计算。本文提出了一种安全有效的多线程概念，以利用多维波数字算法的多核体系结构。研究了上下文切换和同步开销以及由于内核不平等的缓存共享而导致的不公平的操作系统线程调度的影响。非线性Euler方程的仿真结果证实了在1核，4核和2×4核系统上提出的设置的效率。关键词数值积分-偏微分方程-波动数字算法-并行处理-多核处理器-多线程

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