Integrating Virtual Execution Platform for Accurate Analysis in Distributed Real-Time Control System Development

Kumar, G. Sudha Anil; Manimaran, G.; Wang, Z.

doi:10.1109/rtss.2007.21

Cited by 14 publications

(2 citation statements)

References 10 publications

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“…Existing approaches, such as [9,20], that present a simulation environment in which the effects of a real-time operating system are included all present a simulation environment at the PV-T abstraction level [8]. The approach presented in this paper is at the CP-T abstraction level.…”

Section: Related Workmentioning

confidence: 99%

Monotonicity and run-time scheduling

Wiggers

Bekooij

Smit

2009

Proceedings of the Seventh ACM International Conference on Embedded Software

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Modern embedded multi-processors can execute several streamprocessing applications concurrently. Typically, these applications are partitioned into tasks that communicate over buffers together forming a task graph. The fact that these applications are started and stopped by the user combined with the knowledge that not all applications are necessarily completely characterised makes it attractive to use run-time scheduling. We define and characterise a class of budget schedulers that by construction bound the interference from other applications. Furthermore, we will show that the worst-case effects of these schedulers can be included in dataflow process networks. The execution of the resulting dataflow process network is shown to result in tight and conservative bounds on the end-to-end temporal behaviour of the execution of the task graph on a cycle-true simulator. Given that the inter-task synchronisation of the application allows for a dataflow model that is functionally deterministic, this enables exploration of various buffer capacities and scheduler settings at a high level of abstraction.

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Section: Related Workmentioning

confidence: 99%

Monotonicity and run-time scheduling

Wiggers

Bekooij

Smit

2009

Proceedings of the Seventh ACM International Conference on Embedded Software

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“…Reference [120] presents the automatic generation of virtual execution platforms for the hardware architecture to analyze the run-time behavior of the application running on a real-time operating system and to estimate accurately performance data.…”

Section: State Of the Artmentioning

confidence: 99%

Embedded Software Design and Programming of Multiprocessor System-on-Chip

Popovici

Rousseau

Jerraya

et al. 2010

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Enhancing student learning with hands-on RTOS development in real-time systems course

Kumar

Mercado

Manimaran

et al. 2008

2008 38th Annual Frontiers in Education Conference

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-Traditionally, real-time systems are built for a very small set of mission-critical applications like space crafts, avionics and other distributed control systems. The various steps in building such systems include, characterizing the workload, designing scheduling algorithms and performing schedulability analysis. Conventional teaching methodologies for real-time systems have primarily focused on these topics and the choice is completely justified for the targeted traditional real-time systems. However with the evolution of small scale real-time embedded systems like cell phones, PDAs, sensor motes and other portable control systems primarily driven by a Real-Time Operating System (RTOS), the conventional teaching methods fall short in several ways. This is because, building such real-time embedded systems poses certain different design and implementation challenges branching out of the severe resource constraints that these devices should operate under.In order to keep pace with these changing trends, we have enhanced our real-time systems course in two different ways. First, we have included the relevant topics like compiler-level and operating systems-level energy aware real-time scheduling algorithms and further developed corresponding assignments and projects to reinforce student learning in these topics. We present some of these details here. Secondly, we have developed a series of laboratory experiments based on commercial RTOSs which give students a rich hands-on experience in building real-time embedded systems. We have tried two different RTOSs namely, RT-Linux and VxWorks in two consecutive years. In this paper, we present the similarities and differences between two the RTOS platforms and their impact on student learning.

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Integrating Virtual Execution Platform for Accurate Analysis in Distributed Real-Time Control System Development

Cited by 14 publications

References 10 publications

Monotonicity and run-time scheduling

Monotonicity and run-time scheduling

Embedded Software Design and Programming of Multiprocessor System-on-Chip

Enhancing student learning with hands-on RTOS development in real-time systems course

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