Distributed and Operating Systems

Prof. Dr. Boris Koldehofe and Team

Category: Publications

Can memristors reduce the carbon footprint of the Internet?

December 16, 2022 / / 0 Comments

Saad Saleh presented a novel memory architecture TCAmMCogniGron at the IEEE International Conference on Rebooting Computing, 2022. The proposed architecture TCAmMCogniGron is designed to replace a highly energy intensive memory, named Ternary content addressable memory (TCAM), used in almost all current network switches and routers to store processing rules and forward traffic through the Internet. TCAmMCogniGron enables the general purpose integration of special energy saving materials, named Memristors, which allow to keep the processing rules in form of a state, often represented in form of resistance, and this state is non-volatile. In collaboration with Anouk S. Goossens and Tamalika Banerjee from Zernike Institute for Advanced Materials characteristics of a physical memristor built at the CogniGron research center were studied. The findings demonstrate the high energy efficiency and extreme resiliency of the proposed design. The research concluded that in addition to supporting non-volatile state so-called match and mismatch operations require only about 1–16 femtojoules of energy.

Interested to learn more about the potential of memristive devices to a more energy-friendly Internet, please check out the following research works including a recent survey studying the use of memristive devices for performing energy efficient operations using novel computing architectures in the Internet.

This research is supported by the Groningen Cognitive Systems and Materials Research Center (CogniGron), University of Groningen. 

Conference Visits at DEBS and SIGCOMM

September 9, 2022 /

After a long time of virtual conference events, our distributed systems research team had finally the opportunity to participate in physical meetings.

Two highlight this summer where our team attended and contributed were

  1. The conference 16th ACM Conference on Distributed and Event-based Systems (DEBS) in Copenhagen
  2. ACM SIGCOMM, the flagship annual conference of the ACM Special Interest Group on Data Communication (SIGCOMM), this year located in Amsterdam.

Three contributions at the ACM DEBS conference

At DEBS our team was present with three contributions on improving the performance of stream and event processing systems.

„Travel Light – State Shedding for Efficient Operator Migration” is a cooperation with the University of Oslo, with Espen Volnes , Thomas Plagemann and Vera Goebel. (University of Oslo). The paper looks into the combination of state shedding in combination with operator migration to improve the utility of detected events.    
The work of “Window-based Parallel Operator Execution with In-Network Computing” was presented by Bochra Boughzala.  It proposes a novel P4-based in-network computing model that can enhance the parallelization degree of event processing systems by utilizing the capability of programable network switches.    
In the Poster and Demo track Pratyush Agnihotri presented with “PANDA: Performance Prediction for Parallel and Dynamic Stream Processing” his idea on better performance modelling over heterogenous compute resources by building on zero-shot learning models.

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