Date of Award
School of Engineering
Dr. Chirag Parikh
Dr. Jeffrey Ward
Dr. Christian Trefftz
This paper compares Vivado High-Level Synthesis (HLS), a new mainstream technology offered by Xilinx Inc., against the typical Hardware Description Language (HDL) design approach. An example video filter application was implemented via both methods and compared for differences in performance and Non-Reoccurring Engineering (NRE). Lessons learned using HLS are also provided. The objective of this paper is to provide actual comparison data on the current state of mainstream HLS to enable informed decision making for designs considering HLS.
The Xilinx Zync System on a Chip (SoC) offering is used as a platform for both the traditional HDL methods and HLS. This platform includes Field Programmable Gate Array (FPGA) fabric combined with a high speed application microprocessor. These single silicon SoC solutions appear to be a platform capable of effectively utilizing HLS. The example video application selected for implementation is a 9 by 9 kernel convolution filter performed on 24 bit 1080p video at 60 frames per second. The 2013 Xilinx Vivado tool suite was used for both HLS and HDL methods.
HLS proved to be very easy to use to create a functional RTL design. With naïve implementations in both, HLS did not perform well in resource utilization. HLS also provided a design with a slower maximum clock frequency.
Zwagerman, Michael D., "High Level Synthesis, a Use Case Comparison with Hardware Description Language" (2015). Masters Theses. 755.