Fault-Tolerant General Beneš Networks

Lin, Bey-Chi

doi:10.1109/tcomm.2023.3309296

Cited by 1 publication

(1 citation statement)

References 27 publications

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“…The main advantage of this scheme is that it needs only 2 × 2 optical switches. Thus, it is beneficial to use the Benes network to reduce the costs of rearrangeable nonblocking [19].…”

Section: Network Topologymentioning

confidence: 99%

Making Path Selection Bright: A Routing Algorithm for On-Chip Benes Networks

Zhao,

Li,

2024

Electronics

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Optical interconnects are being discussed as a replacement for conventional electrical interconnects and are expected to be applied for future generations of high-performance supercomputers and data centers. Benes networks have attracted much attention because they require only 2 × 2 optical switches, which reduce the cost of rearrangeable nonblocking. However, optical power imbalances can significantly challenge receiver sensitivity. In this work, insertion loss (IL) fairness has been proposed and applied to the field of switches to achieve a relative balance of optical path data transmission in Benes networks. Fairness can be achieved when the port count is small (4 × 4) if the IL between ports is balanced. When the number of ports is moderate (8 × 8), we must use a suitable algorithm or determine the appropriate operating wavelength to minimize the power imbalance. An efficient two-step algorithm (ETS) has particular advantages in solving the path fairness problem and mitigating the power imbalance. As the number of ports increases, the switch states and topology jointly deteriorate the power imbalance. Finally, the ETS algorithm narrows the dynamic range requirement to 13.66 dB, with a 2 dB improvement. It achieves an extinction ratio of 24 dB and a bandwidth of 375 GHz, which outperforms the conventional 32 × 32 Benes network, respectively.

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“…The main advantage of this scheme is that it needs only 2 × 2 optical switches. Thus, it is beneficial to use the Benes network to reduce the costs of rearrangeable nonblocking [19].…”

Section: Network Topologymentioning

confidence: 99%

Making Path Selection Bright: A Routing Algorithm for On-Chip Benes Networks

Zhao,

Li,

2024

Electronics

View full text Add to dashboard Cite

show abstract

Fault-Tolerant General Beneš Networks

Cited by 1 publication

References 27 publications

Making Path Selection Bright: A Routing Algorithm for On-Chip Benes Networks

Making Path Selection Bright: A Routing Algorithm for On-Chip Benes Networks

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