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Modelling heterogeneous processor scheduling for real-time systems

✍ Scribed by J.F. Leathrum; R.R. Mielke; J.W. Stoughton


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
748 KB
Volume
11
Category
Article
ISSN
0736-5845

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✦ Synopsis


A new model is presented to describe data-flow algorithms implemented in a multiprocessing system. Called the resource/data flow graph (RDFG), the model explicitly represents cyclo-statie processor schedules as circuits of processor ares that reflect the order that processors execute graph nodes. The model also allows the guarantee of meeting hard real-time deadlines. When unfolded, the model identifies statically the processor schedule. The model therefore is useful for determining the throughput and latency of systems with heterogeneous processors. The applicability of the model is demonstrated using a space surveillance algorithm.


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