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- W2134732771 abstract "We consider many-core processors with task-oriented programming, whereby scheduling constraints among tasks are decided offline, and are then enforced by the runtime system. Here, exposing and beneficially exploiting fine grain data and control parallelism is increasingly important. Therefore, high expressive power for stating such constraints/directives, along with the ability to implement them in fast, simple hardware, is critical for success. In this paper, we focus on the relationship between duplicable tasks, which are used to express and exploit data parallelism. We extend the conventional Start-After-Complete (precedence) constraint to also be usable between replicas of different such tasks rather than only between entire tasks, thereby increasing the exposable parallelism. Additionally, we propose the parameterized Start-After-Start constraint, which can be used to control the degree of lockstep among multiple such tasks, e.g., in order to improve cache performance when the tasks work on the same data. Also, we briefly describe several additional interesting directives. Finally, we show that the directives can be supported efficiently in hardware. Hypercore, a very efficient CREW PRAM-like shared-cache architecture, which is very challenging because it has extremely fast dispatching for basic constraints, is used in the discussion. However, the new directives have broader applicability." @default.
- W2134732771 created "2016-06-24" @default.
- W2134732771 creator A5023361355 @default.
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- W2134732771 date "2013-02-23" @default.
- W2134732771 modified "2023-09-25" @default.
- W2134732771 title "Scheduling directives for shared-memory many-core processor systems" @default.
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- W2134732771 doi "https://doi.org/10.1145/2442992.2443005" @default.
- W2134732771 hasPublicationYear "2013" @default.
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