Coralie Busse-Grawitz


Last Name

Busse-Grawitz

First Name

Coralie

ORCID

0000-0001-7993-8103

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2020 - 20222
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Publications 1 - 2 of 2
  • Reducing P4 Language’s Voluminosity using Higher-Level Constructs
    Item type: Conference Paper
    Gran Alcoz, Albert; Busse-Grawitz, Coralie; Marty, Eric; et al. (2022)
    EuroP4 '22: Proceedings of the 5th International Workshop on P4 in Europe
    Over the last years, P4 has positioned itself as the primary language for data-plane programming. Despite its constant evolution, the P4 language still "suffers" from one significant limitation: the voluminosity of its code. P4 applications easily reach thousands of lines of code, becoming hard to develop, debug, and maintain. The reason is twofold: P4 requires many characters to express individual concepts (verbosity), and it relies on code repetition (lack of parametrization). Today, P4 users overcome this limitation by relying on templating tools, hand-crafted scripts, and complicated macros. Unfortunately, these methods are not optimal: they make the development process difficult and do not generalize well beyond one codebase. In this work, we propose reducing the voluminosity of P4 code by introducing higher-level language constructs. We present O4, an extended version of P4, that includes three such constructs: arrays (which group same-type entities together), loops (which reduce simple repetitions), and factories (which enable code parametrization). We evaluate O4 on several state-of-the-art programs and show how, with respect to P4: (i) it reduces code volumes by up to 80%, (ii) it decreases code verbosity by 44% on average, and (iii) it cuts duplicated code by 60%. We contribute a compiler implementation that provides said benefits with just a 3.5% increase in compilation time.
  • The NOTED software tool-set improves efficient network utilization for Rucio data transfers via FTS
    Item type: Conference Paper
    Busse-Grawitz, Coralie; Martelli, Edoardo; Lassnig, Mario; et al. (2020)
    EPJ Web of Conferences ~ 24th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2019)
    We present NOTED, a project to better exploit WAN bandwidth for Rucio and FTS data transfers. We describe the developed software tool-box and a successful demonstration of automated load-balancing in the production network. The first component is the Transfer Broker: It identifies large data transfers for which network reconfiguration is both possible and beneficial, and translates the transfer information into parameters that can be used by network controllers. It will make this information available via a public interface. The second component is a demonstration of a Network Controller. It periodically reads the parameters provided by the Transfer Broker, and so decides which actions to apply to improve the network utilisation for a given transfer.
Publications 1 - 2 of 2