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Träfflista för sökning "WFRF:(Behnam Moris) ;pers:(Nolin Mikael)"

Sökning: WFRF:(Behnam Moris) > Nolin Mikael

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1.
  • Behnam, Moris, et al. (författare)
  • A Synchronization Protocol for Hierarchical Resource Sharing in Real-Time Open Systems
  • 2007
  • Ingår i: In Proceedings of the 7th ACM & IEEE International Conference Embedded Software EMSOFT07. ; s. 279-288
  • Konferensbidrag (refereegranskat)abstract
    • This paper presents a protocol for resource sharing in a hierarchical real-time scheduling framework. Targeting real-time open systems, the protocol and the scheduling framework significantly reduce the efforts and errors associated with integrating multiple semi-independent subsystems on a single processor. Thus, our proposed techniques facilitate modern software development processes, where subsystems are developed by independent teams (or subcontractors) and at a later stage integrated into a single product. Using our solution, a subsystem need not know, and is not dependent on, the timing behaviour of other subsystems; even though they share mutually exclusive resources. In this paper we also prove the correctness of our approach and evaluate its efficiency.
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2.
  • Behnam, Moris, et al. (författare)
  • An overrun method to support composition of semi-independent real-time components
  • 2008
  • Ingår i: Proceedings - International Computer Software and Applications Conference. - 9780769532622 ; s. 1347-1352
  • Konferensbidrag (refereegranskat)abstract
    • Engineers of embedded software systems rely on efficient design techniques and tools along with efficient run-time support. In the design of complex embedded real-time systems, the Hierarchical Scheduling Framework (HSF) has been introduced as a design-time framework enabling compositional schedulability analysis of embedded software systems with real-time properties. Moreover, the HSF provides a run-time framework guaranteeing that these non-functional requirements are met. In this paper a system consists of a number of semi-independent components called subsystems, and these subsystems are allowed to share logical resources. The HSF makes sure that the individual subsystems respect their allocated CPU budgets. However, as semi-independent sub-systems share logical resources, extra complexity is introduced. Specifically, the contribution of this paper is a novel method to allow for budget overruns; a common scenario when a subsystem utilizes shared logical resources. This proposed method is not only more resource efficient than existing methods, but it is also more appropriate for supporting composability of independently developed real-time subsystems.
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3.
  • Behnam, Moris, et al. (författare)
  • Scheduling of Semi-Independent Real-Time Components: Overrun Methods and Resource Holding Times
  • 2008
  • Ingår i: Proceedings of the 13th IEEE International Conference on Emerging echnologies and Factory Automation (ETFA’08). - 978-1-4244-1505-2 ; s. 575-582
  • Konferensbidrag (refereegranskat)abstract
    • The Hierarchical Scheduling Framework (HSF) has been introduced as a design-time framework enabling compositional schedulability analysis of embedded software systems with real-time properties. In this paper a system consists of a number of semi-independent components called subsystems. Subsystems are developed independently and later integrated to form a system. To support this design process, our proposed methods allow nonintrusive configuration and tuning of subsystem timing behaviour via subsystem interfaces for selecting scheduling parameters. This paper considers two methods to handle overruns due to resource sharing between subsystems in the HSF. We present the scheduling algorithms for overruns and their associated schedulability analysis, together with analysis that shows under what circumstances one or the other overrun method is preferred. Furthermore, we show how to calculate resource-holding times within our framework.
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  • Resultat 1-3 av 3
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refereegranskat (3)
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Behnam, Moris, (3)
Shin, Insik, (3)
Nolte, Thomas, (2)
Nolte, Tomas, (1)
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Mälardalens högskola (3)
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Engelska (3)
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