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Alex Iriza

Alex Iriza

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    Aquila: A unified, low-latency fabric for datacenter networks
    Hema Hariharan
    Eric Lance
    Moray Mclaren
    Stephen Wang
    Zhehua Wu
    Sunghwan Yoo
    Raghuraman Balasubramanian
    Prashant Chandra
    Michael Cutforth
    Peter James Cuy
    David Decotigny
    Rakesh Gautam
    Rick Roy
    Zuowei Shen
    Ming Tan
    Ye Tang
    Monica C Wong-Chan
    Joe Zbiciak
    Aquila: A unified, low-latency fabric for datacenter networks (2022)
    Preview abstract Datacenter workloads have evolved from the data intensive, loosely-coupled workloads of the past decade to more tightly coupled ones, wherein ultra-low latency communication is essential for resource disaggregation over the network and to enable emerging programming models. We introduce Aquila, an experimental datacenter network fabric built with ultra-low latency support as a first-class design goal, while also supporting traditional datacenter traffic. Aquila uses a new Layer 2 cell-based protocol, GNet, an integrated switch, and a custom ASIC with low-latency Remote Memory Access (RMA) capabilities co-designed with GNet. We demonstrate that Aquila is able to achieve under 40 μs tail fabric Round Trip Time (RTT) for IP traffic and sub-10 μs RMA execution time across hundreds of host machines, even in the presence of background throughput-oriented IP traffic. This translates to more than 5x reduction in tail latency for a production quality key-value store running on a prototype Aquila network. View details
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