| 1. |
- Nemati, Farhang, et al.
(author)
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A Framework for Real-Time Systems Migration to Multi-Cores
- 2009
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Reports (other academic/artistic)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.
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| 2. |
- Nemati, Farhang, Senior Lecturer, 1975-, et al.
(author)
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Towards Migrating Legacy Real-Time Systems to Multi-Core Platforms
- 2008
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In: 2008 IEEE International Conference on Emerging Technologies and Factory Automation. - : IEEE. - 9781424415052 - 9781424415069 ; , s. 717-720
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Conference paper (peer-reviewed)abstract
- Power consumption and thermal problems limit the single-core processors to be faster. Processor architects are therefore moving toward multi-coreprocessors. Developers of embedded real-time systems however hesitates a shift to multi-core processors, especially for existing "legacy" systemswhich have been developed with single-core processor assumptions. These systems have been developed and maintained by many developers over many years, and can not easily be replaced due to the huge development investments they represent. In this paper we investigate challenges ofmigrating complex legacy real-time systems to multi-core architectures. We propose componentization and partitioning to prepare the migration. Componentization groups logically related tasks into components (or subsystems). This provides an abstraction layer from a scheduling perspective, which facilitates migration. Partitioning maps tasks to the different cores on the multi-core processor, maximizing system performance while ensuring correctness.
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