Findings on Supercomputing Reported by Investigators at Abo Akademi University (A task migration mechanism for distributed many-core operating systems)
By a News Reporter-Staff News Editor at Computer Weekly News -- Investigators publish new report on Supercomputing. According to news reporting originating from Turku, Finland, by VerticalNews correspondents, research stated, "Spatial locality of task execution is becoming important in future hardware platforms since the number of cores is steadily increasing. The large amount of cores requires an intelligent power manager and the high chip and core density requires increased thermal awareness to avoid thermal hotspots on the chip."
Our news editors obtained a quote from the research from Abo Akademi University, "This paper presents a lightweight task migration mechanism explicitly for distributed operating systems running on many-core platforms. As the distributed OS runs one scheduler on each core, the tasks are migrated between OS kernels within the same shared memory platform. The benefits, such as performance and energy efficiency, of task migration are achieved by re-locating running tasks on the most appropriate cores and keeping the overhead of executing such a migration sufficiently low. We investigate the overhead of migrating tasks on a distributed OS running both on a bus-based platform and a many-core NoC-with these means of measures, we can predict the task migration overhead and pinpoint the emerging bottlenecks."
According to the news editors, the research concluded: "With the presented task migration mechanism, we intend to improve the dynamism of power and performance characteristics in distributed many-core operating systems."
For more information on this research see: A task migration mechanism for distributed many-core operating systems. Journal of Supercomputing, 2014;68(3):1141-1162. Journal of Supercomputing can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Supercomputing - www.springerlink.com/content/0920-8542/)
The news editors report that additional information may be obtained by contacting S. Holmbacka, Abo Akad University, Inst Informat Technol, Turku, Finland. Additional authors for this research include M. Fattah, W. Lund, A.M. Rahmani, S. Lafond and J. Lilius.
Keywords for this news article include: Turku, Finland, Europe, Supercomputing
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