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Global resource sharing for synthesis of control data flow graphs on FPGAs

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4 Author(s)
S. O. Memik ; Comput. Sci. Dept., UCLA, Los Angeles, CA, USA ; G. Memik ; R. Jafari ; E. Kursun

In this paper we discuss the global resource sharing problem during synthesis of control data flow graphs for FPGAs. We first define the Global Resource Sharing (GRS) problem. Then, we introduce the Global Inter Basic Block Resource Sharing (GIBBS) technique to solve the GRS problem. The first tries to minimize the number of connections between modules, the second considers the area gain, the third uses the criticality of operations assigned to resources as a measure for deciding on merging any given pair of resources, the fourth tries to capture common resource chains and overlap those to minimize both area and delay, and the fifth is the combination of these heuristics. While applying resource sharing, we also consider the execution frequency of the basic blocks. Using our techniques we synthesized several CDFGs representing applications from MediaBench suite. Our results show that, we can reduce the total area requirement by 44% on average (up to 59%) while increasing the execution time by 6% on average.

Published in:

Design Automation Conference, 2003. Proceedings

Date of Conference:

2-6 June 2003