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arXiv · 2112.00621

A Two-Level Approximate Logic Synthesis Combining Cube Insertion and Removal

Gabriel Ammes·Walter Lau Neto·Paulo Butzen·Pierre-Emmanuel Gaillardon·Renato P. Ribas
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Abstract

Approximate computing is an attractive paradigm for reducing the design complexity of error-resilient systems, therefore improving performance and saving power consumption. In this work, we propose a new two-level approximate logic synthesis method based on cube insertion and removal procedures. Experimental results have shown significant literal count and runtime reduction compared to the state-of-the-art approach. The method scalability is illustrated for a high error threshold over large benchmark circuits. The obtained solutions have presented a literal number reduction up to 38%, 56% and 93% with respect to an error rate of 1%, 3% and 5%, respectively.

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Gabriel Ammes, Walter Lau Neto, Paulo Butzen, Pierre-Emmanuel Gaillardon, Renato P. Ribas. 2021-11-22. A Two-Level Approximate Logic Synthesis Combining Cube Insertion and Removal. https://doi.org/10.1109/tcad.2022.3143489

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