The dependency management framework: A case study of the ION CubeSat

Hui Ding, Leon Arber, Lui Sha, Marco Caccamo

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Due to the complexity and requirements of modern real-time systems, multiple teams must often work concurrently and independently to develop the various components of the system. Since a team typically only knows the dependency relations between the components they wrote and those they directly use, keeping track of system-wide dependency relations is not possible for any individual team. To further complicate matters, dependency relations often change as software components are refined or their interactions modified. Because the robustness of any real-time system hinges on the availability of essential services in spite of faults and failures in useful but non-essential components, keeping track of the constantly evolving dependency relations between the system's components is crucial. If a system's designers cannot ensure that critical services only USE but do not DEPEND ON less critical components, a seemingly minor fault can propagate along complex and unforeseen dependency chains and bring down the entire system. Therefore, automatically tracking and analyzing system-wide dependency relations given only local dependency information is vital for the development of robust real time systems. This paper presents DMF (Dependency Management Framework), a prototype toolkit for dependency management in designing robust real-time systems. We demonstrate the usability and scalability of DMF with a case study of ION CubeSat, the University of Illinois at Urbana-Champaign 's first student-developed satellite.

Original languageEnglish (US)
Title of host publicationProceedings - 18th Euromicro Conference on Real-Time Systems, ECRTS 2006
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages10
ISBN (Print)0769526195, 9780769526195
StatePublished - 2006
Event18th Euromicro Conference on Real-Time Systems, ECRTS 2006 - Dresden, Germany
Duration: Jul 5 2006Jul 7 2006

Publication series

NameProceedings - Euromicro Conference on Real-Time Systems
ISSN (Print)1068-3070


Other18th Euromicro Conference on Real-Time Systems, ECRTS 2006

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture


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