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Optics for Disaggregating Data Centers and Disintegrating Computing

Abstract : We present a review of photonic Network-on-Chip (pNoC) architectures and experimental demonstrations, concluding to the main obstacles that still impede the materialization of these concepts. We also propose the employment of optics in chip-to-chip (C2C) computing architectures rather than on-chip layouts towards reaping their benefits while avoiding technology limitations on the way to many-core set-ups. We identify multisocket boards as the most prominent application area and present recent advances in optically enabled multisocket boards, revealing successful 40 Gb/s transceiver and routing capabilities via integrated photonics. These results indicate the potential to bring energy consumption down by more than 60% compared to current QuickPath Interconnect (QPI) protocol, while turning multisocket architectures into a single-hop low-latency setup for even more than 4 interconnected sockets, which form currently the electronic baseline.
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https://hal.inria.fr/hal-03200687
Contributor : Hal Ifip <>
Submitted on : Friday, April 16, 2021 - 5:08:13 PM
Last modification on : Friday, April 16, 2021 - 5:38:17 PM

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Nikos Terzenidis, Miltiadis Moralis-Pegios, Stelios Pitris, Charoula Mitsolidou, George Mourgias-Alexandris, et al.. Optics for Disaggregating Data Centers and Disintegrating Computing. 23th International IFIP Conference on Optical Network Design and Modeling (ONDM), May 2019, Athens, Greece. pp.274-285, ⟨10.1007/978-3-030-38085-4_24⟩. ⟨hal-03200687⟩

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