Architecture and Real Time Systems Lab University of Massachusetts, Amherst I Koren and C M Krishna Electrical and Computer Engineering University of Massachusetts.

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Presentation transcript:

Architecture and Real Time Systems Lab University of Massachusetts, Amherst I Koren and C M Krishna Electrical and Computer Engineering University of Massachusetts Amherst, MA Sponsored by Space and Naval Warfare Systems Command & Advanced Research Projects Agency ARPA order B855 under SPAWAR contract N C-0165 (Please view the slides only through slide show. The show is automated)

Architecture and Real Time Systems Lab University of Massachusetts, Amherst * A Distributed Event Driven Simulation for Distributed Real Time Systems * The RAPIDS simulator provides the user with a configurable environment, with various possible topologies, protocols, etc., in order to study the performance of real-time scheduling * Modular and easily extendable for new network protocols, allocation and scheduling algorithms and recovery techniques. algorithms and fault recovery policies in fault- tolerant distributed real-time systems. * Helps designers compare different policies and algorithms for reliable real time systems design * By exposing the potential bottlenecks, can help fine-tune the design of the architecture and operating system for a given real-time system RAPIDS

Architecture and Real Time Systems Lab University of Massachusetts, Amherst To quit the simulator To pause the running simulator To start the simulator To load the already saved configuration To save the present configuration To create console screen on other computers Get parameters relevant to specified topology Algorithm to allocate the tasks among nodes To select one of the topologies Give the system parameters To edit the messages exchanged between tasks To send the task in run time To configure the fault conditions To inject faults in run time To remove the injected fault To view schedule window of all nodes To view Performance window of the system To view allocation of tasks among the nodes Console window of the simulator

Architecture and Real Time Systems Lab University of Massachusetts, Amherst Running the simulator

Architecture and Real Time Systems Lab University of Massachusetts, Amherst Comparison of schedule window of two runs of simulator with different topology With network topology point to point With network topology Fire Wire

Architecture and Real Time Systems Lab University of Massachusetts, Amherst Performance of system without any faults

Architecture and Real Time Systems Lab University of Massachusetts, Amherst Performance of system after injecting fault

Architecture and Real Time Systems Lab University of Massachusetts, Amherst Comparison of Performance of system with and without fault Without faultsWith faults