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FBFC (Flit Bubble Flow Control) and Dateline flow control are two commonly used flow control mechanisms in Torus networks. However, each of these two flow control mechanisms has its own performance limitations. The bubble flow control mechanism can lead to starvation, and dateline flow control can decrease channel cache utilization. We propose BDFC (Bubble Dateline Flow Control) technology, which combines the above two flow control mechanisms. It greatly alleviates the hunger problem of bubble flow control technology without increasing costs, while also increasing the cache utilization of Dateline technology, thereby improving the performance of the entire network. In 8 \(\times \) 8Torus, its saturated throughput has increased by a maximum of 44 \(\%\) compared to FBFC. Improved by a maximum of 68 \(\%\) compared to Dateline.

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BDFC:A New Flow Control Mechanism for Torus Networks

  • 会议论文

  • 发表日期：

    2025年

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  • Haofei Zhang,
  • Youmeng Li,
  • Yu Deng,
  • Qi Fang

摘要

FBFC (Flit Bubble Flow Control) and Dateline flow control are two commonly used flow control mechanisms in Torus networks. However, each of these two flow control mechanisms has its own performance limitations. The bubble flow control mechanism can lead to starvation, and dateline flow control can decrease channel cache utilization. We propose BDFC (Bubble Dateline Flow Control) technology, which combines the above two flow control mechanisms. It greatly alleviates the hunger problem of bubble flow control technology without increasing costs, while also increasing the cache utilization of Dateline technology, thereby improving the performance of the entire network. In 8 \(\times \) 8Torus, its saturated throughput has increased by a maximum of 44 \(\%\) compared to FBFC. Improved by a maximum of 68 \(\%\) compared to Dateline.