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A multi-application approach for synthesizing custom network-on-chips

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Abstract

Execution of multiple applications on Multi-Processor System-on-Chips (MPSoCs) significantly boosts performance and energy efficiency. Although various researchers have suggested Network-on-Chip (NoC) architectures for MPSoCs, the problem still needs more investigations for the case of multi-application MPSoCs. In this paper, we propose a fully automated synthesis flow in five steps for the design of custom NoC fabrics for multi-application MPSoCs. The steps include: preprocessing, core to router allocation, voltage island merging, floorplanning, and router to router connection. The proposed flow finds design solutions that satisfy the performance, bandwidth, and power constraints of all input applications. If the user decides, the proposed synthesis adds network-level reconfiguration to improve the efficiency of the obtained design solutions. With the reconfiguration option, the proposed flow comes up with adaptive NoC architectures that satisfy each application’s communication requirements while power-gate idle resources, e.g., router ports and links. If reconfiguration option is not set by the user, the proposed flow considers the top communication requirements among the applications in finding design solutions. We have used the proposed synthesis flow to design custom NoCs for several combined graphs of real-world applications and synthetic graphs. Results show that the reconfiguration option can save up to 98% in the energy-delay product (EDP) of the ultimate designs.

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Notes

  1. We use the abbreviated terms of Table 1 in this paper.

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Authors and Affiliations

  1. Department of Computer Engineering, Iran University of Science and Technology University, Tehran, Iran

    Somayeh Kashi & Mahdi Fazeli

  2. Department of Computer Systems Technology, North Carolina A&T State University, Greensboro, NC, USA

    Ahmad Patooghy

  3. Department of Computer Science and Engineering, Shahid Beheshti University, Tehran, Iran

    Dara Rahmati

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  1. Somayeh Kashi
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  2. Ahmad Patooghy
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  3. Dara Rahmati
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  4. Mahdi Fazeli
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Correspondence to Mahdi Fazeli.

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Kashi, S., Patooghy, A., Rahmati, D. et al. A multi-application approach for synthesizing custom network-on-chips. J Supercomput 78, 15358–15380 (2022). https://doi.org/10.1007/s11227-022-04444-0

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