NDLI: Achieving modular dynamic partial reconfiguration with a difference-based flow (abstract only)

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Achieving modular dynamic partial reconfiguration with a difference-based flow (abstract only)

Content Provider	ACM Digital Library
Author	Ozkurt, Ozgur Turk, Yusuf Gören, Sezer Ugurdag, H. Fatih Yildiz, Abdullah
Abstract	Dynamic Partial Reconfiguration (DPR) of Xilinx FPGAs in cases where there is significant logic difference between subsequent configurations is made possible by Xilinx module-based PR flow. Xilinx supports this flow only for high-end FPGAs and requires paid license, without which Xilinx PlanAhead software disables the related knobs and features. This poster presents a unique methodology (called DPR-LD) that enables DPR of low-end and high-end Xilinx FPGAs and requires no paid license. DPR-LD stands for DPR for Large Differences. DPR-LD uses the free Xilinx difference-based bit file generation software (bitgen), which normally is meant only for small differences between subsequent configurations. DPR-LD can be realized through either FPGA Editor or PlanAhead. Our FPGA Editor flow requires several physical constraints to ensure contention-free implementation of static and dynamic modules. We use implementation, floorplanning, and placement constraints to partition the design into several physical regions (one per module) for mapping, packing, placement, and routing. In order to avoid routing of a module to cross over another module, "fortress block"s are used to isolate the modules from each other. However, fortress blocks lead to wasted FPGA resources. On the other hand, in our PlanAhead flow, the physical constraints are entered via a GUI, and the corresponding actual physical constraints are generated automatically and without wasting FPGA resources. To evaluate the two approaches, a proof-of-concept application with a single dynamic region was implemented using both flows. In addition, a multiple dynamic region design was implemented with our PlanAhead flow.
Starting Page	270
Ending Page	270
Page Count	1
ISBN	9781450318877
DOI	10.1145/2435264.2435324
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-02-11
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Dynamic partial reconfiguration
Content Type	Text
Resource Type	Article

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