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Comparative Analysis of Processor-FPGA Communication Performance in Low-Cost FPSoCs

机译：低成本FPSOC处理器-FPGA通信性能的比较分析

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摘要

Field-programmable system-on-chip (FPSoC) devices, combining high-performance processors and FPGA fabric in the same chip, are currently a leading technology in the design of complex digital systems. Since design times are longer than those of systems based on graphic processing units or standalone processors, many efforts are being devoted to develope efficient compilers from high-level languages. Even though, efficient processor-FPGA communication is still an important open issue. To contribute to this area, this article presents an extensive characterization of the processor-FPGA communication delays in Zynq-7000 devices. Although partial analyses of communication performance in these devices have been reported, this is the first work to address very important issues such as the use of DMA for data transfers or the effect of L2 cache controller settings and external RAM controller settings. As a result, data transfer rates are analyzed considering all parameters that influence them. The performance of Zynq-7000 devices is also compared to that of Cyclone V devices, hence covering the two most important current families that dominate the FPSoC market. This information is of utmost importance for designers to optimize processor-FPGA communication and, in turn, the performance of their FPSoC-based systems.
机译：现场可编程系统的片上（FPSOC）设备，将高性能处理器和FPGA面料组合在同一芯片中，目前是复杂数字系统设计中的领先技术。由于设计时间比基于图形处理单元或独立处理器的系统更长，因此许多努力都致力于从高级语言开发有效的编译器。即使，高效的处理器-FPGA通信仍然是一个重要的开放问题。为此区域贡献，本文介绍了Zynq-7000设备中的处理器-FPGA通信延迟的广泛表征。虽然已经报告了这些设备中的通信性能的部分分析，但这是第一个解决非常重要的问题，例如使用DMA进行数据传输或L2高速缓存控制器设置和外部RAM控制器设置的效果。结果，考虑到影响它们的所有参数进行分析数据传输速率。 Zynq-7000器件的性能也与Cyclone V器件的性能相比，因此涵盖了占据FPSOC市场的两个最重要的当前系列。这些信息对于设计人员来说至关重要，以优化处理器-FPGA通信，然后依次执行基于FPSOC的系统的性能。

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