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Sökning: WFRF:(Nolte Thomas) > Nemati Farhang > Kraft Johan

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  • Nemati, Farhang, et al. (författare)
  • A Framework for Real-Time Systems Migration to Multi-Cores
  • 2009
  • Rapport (övrigt vetenskapligt)abstract
    • Power consumption and thermal problems limit a further increase of speed in single-core processors. Processor architects are therefore moving toward multicore processors. However, a shift to multi-core processors is a big challenge for developers of embedded real-time systems, especially considering existing “legacy” systems which have been developed with single-core processor assumptions. These systems have been developed and maintained by many developers over many years, and cannot easily be replaced due to the huge development investments they represent. In this paper we investigate challenges of migrating complex legacy real-time systems to multi-core architectures. We propose a partitioning algorithm to prepare the migration. Partitioning groups task and maps them to the different cores on the multicore processor, increasing system performance while ensuring correctness. We have run experiments that compare outputs of the algorithm to the outputs of an exhaustive search. Based on a cost function, the algorithm produces systems very close to optimal partitioning with respect to the cost function.
  • Nemati, Farhang, et al. (författare)
  • Towards Migrating Legacy Real-Time Systems to Multi-Core Platforms
  • 2008
  • Ingår i: Proceedings of the Work-In-Progress (WIP) session of the 13th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA'08), Hamburg, Germany.
  • Konferensbidrag (refereegranskat)abstract
    • Power consumption and thermal problems limit thesingle-core processors to be faster. Processor architectsare therefore moving toward multi-core processors.Developers of embedded real-time systems howeverhesitates a shift to multi-core processors, especially forexisting "legacy" systems which have been developedwith single-core processor assumptions. These systemshave been developed and maintained by many developersover many years, and can not easily be replaced due tothe huge development investments they represent. In thispaper we investigate challenges of migrating complexlegacy real-time systems to multi-core architectures. Wepropose componentization and partitioning to prepare themigration. Componentization groups logically relatedtasks into components (or subsystems). This provides anabstraction layer from a scheduling perspective, whichfacilitates migration. Partitioning maps tasks to thedifferent cores on the multi-core processor, maximizingsystem performance while ensuring correctness.
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