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Efficient Inter-Task Communication for Nested Loop Programs on a Multiprocessor System

机译:多处理器系统上嵌套循环程序的高效的任务间通信

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摘要

In modern multiprocessor systems, processors can be stalled by inter-task communication when reading from a remote buffer. This paper presents a solution for the inter-task communication, that has a minimal impact on the performance of the system, hides the inter-task communication latency without requiring additional hardware. The solution applies to jobs, represented as task graphs, where the tasks are nested loop programs. Buffers are allocated in scratch-pad memories of the consuming tasks to provide low latency read access. For the nested loop programs, minimal buffer sizes can be determined to cover all possible communication patterns. The added computational complexity is low, as the solution adds only a few operations to the nested loop programs.
机译:在现代多处理器系统中,当从远程缓冲区读取数据时,处理器可能会由于任务间通信而停滞。本文提出了一种任务间通信解决方案,该解决方案对系统性能的影响最小,隐藏了任务间通信延迟,而无需其他硬件。该解决方案适用于以任务图表示的作业,其中任务是嵌套循环程序。在执行任务的暂存器中分配缓冲区,以提供低延迟的读取访问。对于嵌套循环程序,可以确定最小的缓冲区大小以覆盖所有可能的通信模式。由于该解决方案仅向嵌套循环程序添加了一些操作,因此增加了计算复杂度。

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