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Auflistung nach Autor:in "Sauer, Christian"

1 - 4 von 4
  • Konferenzbeitrag
    Application-driven design of cost-efficient communications platforms
    (Informatk 2005. Informatik Live! Band 1, 2005) Blüthgen, Hans Martin; Sauer, Christian; Langen, Dominik; Gries, Matthias; Raab, Wolfgang
    We present a five phases approach for the cost-efficient design of communication platforms. We start with complete and executable models of the system function that capture all essential parts of a reference application, i.e. processing kernels, data and control flow, and timing constraints. We analyze such an architectureindependent model to narrow the design space and derive a most flexible initial platform architecture. We map the model onto the platform hardand software, and profile the system. Through iterations, the prototype is refined, until an architecture is found that meets performance and cost constraints. The resulting virtual prototype serves as executable specification for the design of the final system. Two case studies from wireless communications (Software Defined Radio, SDR) and access networks (Digital Subscriber Line Access Multiplexer, DSLAM) illustrate our approach.
  • Konferenzbeitrag
    Experiences in Collecting Requirements for an AI-enabled Industry 4.0 Platform
    (Softwaretechnik-Trends Band 43, Heft 4, 2023) Sauer, Christian; Eichelberger, Holger
    Industry 4.0 software platforms target creation, provisioning and operation of industrial applications, e.g., on a shopfloor. Recent advances in Artificial Intelligence (AI), one pillar of Industry 4.0, lead to new demands. The funded project IIP-Ecosphere designs a novel, AI-enabled Industry 4.0 platform. As a basis, we applied two complementing requirements views, namely usage and functional view inspired by IIRA, and collected 67 usage view scenarios and 141 top level functional requirements. In this paper, we summarize our experiences on the requirements collection and discuss their effect on the yet realized platform.
  • Konferenzbeitrag
    Performance Evaluation of BaSyx based Asset Administration Shells for Industry 4.0 Applications
    (Softwaretechnik-Trends Band 43, Heft 1, 2023) Sauer, Christian; Eichelberger, Holger
    The Asset Administration Shell (AAS) is an upcoming information model standard, which aims at interoperable modeling of “assets”, i.e., products, machines, services or digital twins in IIoT/Industry 4.0. Currently, a number of IIoT-platforms use proprietary information models similar to AAS, but not a common standard, which affects interoperability. A key question for a broad uptake is if AAS can be applied in a performant and scalable manner. In this paper, we examine this question for the open source Eclipse BaSyx middleware. To explore capabilities and possible performance limitations, we present four experiments measuring the performance of experimental AAS in BaSyx and, within the context set by our experiments, i.e., 10-1000 AAS instances, can conclude good scalability.
  • Konferenzbeitrag
    Performance evaluation of VLSI platforms using SystemQ
    (Informatk 2005. Informatik Live! Band 1, 2005) Sonntag, Sören; Gries, Matthias; Sauer, Christian
    Modern VLSI systems exhibit increasing complexity. The size of a design not only grows, but the system architecture also becomes more and more heterogeneous and parallel. A key factor for a successful implementation is modeling and simulation of the design. However, modeling at register-transfer level (RTL) is not feasible anymore as a starting point. Already in the concept phase of a design quantitative estimations of the system's performance are required. To effectively support system engineers during this design phase we have developed a performance evaluation framework called SystemQ. By starting with a performance model we show how the system's behavior and structure can be refined systematically. SystemQ is implemented in SystemC and seamlessly supports the refinement of performance models down to transaction level and RTL.