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2014 IEEE 17th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing (ISORC) (2014)
Reno, NV, USA
June 10, 2014 to June 12, 2014
ISSN: 1555-0885
ISBN: 978-1-4799-4430-9
pp: 206-212
ABSTRACT
This work is motivated by the needs to synchronize task executions where tasks might use semaphores to protect their critical sections and run over accelerators. In particular, the Priority Ceiling Protocol is extended to manage priority inversion caused by accelerator usages. By recognizing the difference between an accelerator and a semaphore, higher-priority tasks are less likely blocked by lower-priority tasks, due to their requests for an accelerator. In particular, blocking that will not contribute to any deadlock and/or chained blocking is allowed in a managed way, with an objective to maximize the utilization of accelerators. A series of experiments is then conducted to derive insights to task synchronization when accelerators might be used.
INDEX TERMS
Real-time systems, Distributed computing
CITATION
Yu-Chen Wu, Che-Wei Chang, Tei-Wei Kuo, Chi-Sheng Shih, "Accelerator-Aware Task Synchronization for Real-Time Systems", 2014 IEEE 17th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing (ISORC), vol. 00, no. , pp. 206-212, 2014, doi:10.1109/ISORC.2014.18
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