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Design space exploration of multiple loops on FPGAs using high level synthesis.

Abstract : Real-world applications such as image processing, signal processing, and others often contain a sequence of computation intensive kernels, each represented in the form of a nested loop. High-level synthesis (HLS) enables efficient hardware implementation of these loops using high-level programming languages. HLS tools also allow the designers to evaluate design choices with different trade-offs through pragmas/directives. Prior design space exploration techniques for HLS primarily focus on either single nested loop or multiple loops without consideration to the data dependencies among them. In this paper, we propose efficient design space exploration techniques for applications that consist of multiple nested loops with or without data dependencies. In particular, we develop an algorithm to derive the Pareto-optimal curve (performance versus area) of the application when mapped onto FPGAs using HLS. Our algorithm is efficient as it effectively prunes the dominated points in the design space. We also develop accurate performance and area models to assist the design space exploration process. Experiments on various scientific kernels and real-world applications demonstrate that our design space exploration technique is accurate and efficient.
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Submitted on : Tuesday, October 19, 2021 - 4:44:02 PM
Last modification on : Friday, October 22, 2021 - 4:55:11 AM

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Guanwen Zhong, Vanchinathan Venkataramani, Yun-Kuan Liang, Tulika Mitra, Smail Niar. Design space exploration of multiple loops on FPGAs using high level synthesis.. 2014 32nd IEEE International Conference on Computer Design (ICCD), Oct 2014, Seoul, South Korea. pp.456-463, ⟨10.1109/ICCD.2014.6974719⟩. ⟨hal-03386031⟩

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