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High Level Synthesis of Multi-precision Data Flow Graphs

Agrawal, Vikas and Pande, Anand and Mehendale, Mahesh M (2001) High Level Synthesis of Multi-precision Data Flow Graphs. In: Fourteenth International Conference on VLSI Design, 2001, 3-7 January, Bangalore,India, pp. 411-416.


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A number of DSP algorithms involve linear transforms employing weighted sum computations, where the weights are fixed at design time. Add-shift implementation of such a computation results in a data flow graph that has multiple precision variables and functional units. We explore the potential of precision sensitive approach for the high level synthesis of such multi-precision DFGs. We focus on fixed latency implementation of these DFGs. We present register allocation, functional unit binding and scheduling algorithms to exploit the multi-precision nature of such DFGs for area efficient implementation. The proposed approach is fairly generic and could be applied to multi-precision DFGs involving any type of functional units. Significant improvements of upto $27\%$ have been obtained over the conventional high-level synthesis approach.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited: 15 Feb 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ac.in/id/eprint/5361

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