ZUCL: A ZYNQ UltraScale+ Framework for OpenCL HLS Applications

Khoa Pham, Anuj Vaishnav, Malte Vesper, Dirk Koch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this work, we are proposing the ZUCL framework for implementing and running OpenCL applications for the latest Xilinx ZYNQ UltraScale+ platform. ZUCL is a holistic framework addressing the FPGA OS infrastructure, HLS module
implementation as well as the runtime management. ZUCL enables partial reconfiguration (PR) on this platform by providing an infrastructure featuring multiple adjacent PR regions having an identical resource layout. This allows users building their hardware modules once but instantiating them multiple times in the provided regions in a hot plug-and-play manner. An automatic physical implementation backend based on templates allows implementing OpenCL kernels into hardware modules all the way from OpenCL descriptions to relocatable accelerator bitstreams in a fully software-centric design process. Finally, prototypes of generic device drivers for OpenCL kernels and a hardware task scheduler together with low-level configuration drivers have been developed to manage kernels at runtime. A demonstrator on a Xilinx ZCU102 evaluation board will show how multiple OpenCL kernels can be implemented and executed simultaneously with ease and flexibility by a ZYNQ UltraScale+ platform under direct control of the ARM SoC running Linux.
Original languageEnglish
Title of host publicationFifth International Workshop on FPGAs for Software Programmers (FSP 2018)
Publication statusPublished - 2018


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