13/1998 : On Phase Intensitivity of Interacting Nodes

RR Number

13/1998

Author(s)

Roman Nossal, Christopher Temple

Abstract

Distributed real-time systems offer the advantage of featuring self-contained, widely independent nodes. However, the tight deadlines of real-time applications often require an integrated treatment of all tasks schedules; deadline fulfillment can only be achieved by aligning the task executions in the individual nodes to each other during a centralized design process. Despite the architectural independence of the nodes, the respective task schedules cannot be designed independently from one another. In this paper we propose an approach to maintain an independent development process for each node. The nodes are decoupled by increasing the frequency of message transfers of the inter-node communication. Nodes that do no longer require alignment are called phase insensitive. We derive a condition for analyzing the phase insensitivity of a given system as well as for designing phase insensitive systems.

Bibtex

@techreport{ nossal:1998-13,
  author =       "Roman Nossal and Christopher Temple",
  title =        "On Phase Intensitivity of Interacting Nodes",
  institution =  "Technische Universit{\"a}t Wien, Institut f{\"u}r Technische Informatik",
  address =      "Treitlstr. 1-3/182-1, 1040 Vienna, Austria",
  type =         "Research Report",
  year =         "1998",
  number =       "13/1998"
}

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