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| Routability Prediction for FPGA Design Based on Complex Networks and Attention Mechanism |
| NIE Tingyuan, WANG Yanwei, NIE Jingjing, LIU Pengfei
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| School of Information & Control Engineering, Qingdao University of Technology, Qingdao 266520, China |
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Abstract FPGA routability prediction is of great significance for solving the optimization of physical design. We propose an FPGA routability prediction model based on complex networks and CBAM-CNN. During the placement phase, we extract circuit features and complex network features related to circuit congestion and map them to RGB images. We introduce an attention mechanism to enhance the importance of features. The experimental results show that the prediction accuracy is 98.03%, precision is 98.3%, sensitivity is 98.3%, specificity is 97.67%, and the Matthews correlation coefficient is 93.75%. The importance of complex network features in FPGA routability prediction is ranked in order of degree, strength, eigenvector, and betweenness. This proves the effectiveness and importance of complex network features in predicting FPGA routability.
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Received: 01 November 2023
Published: 13 February 2026
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