Reducing the scan cycle time of control applications through multi-core execution of user programs
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United States of America Patent
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Aug 8, 2017
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Jul 16, 2012
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Jul 14, 2011
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Abstract
A method for pipeline parallelizing a control program for multi-core execution includes using (12) data dependency analysis on a control program to identify tasks that can be performed in parallel, identifying (13) a largest task Tmax requiring the most execution time of the identified tasks, identifying (14) cut-points in the largest task Tmax where data dependency delays decouple the task, inserting (15) delayed data dependencies into cut-points of the largest task Tmax to create N pipeline sub-tasks, in which N is a number of cores available to a processor on which the control program will be executed, and scheduling (16) the tasks and pipeline sub-tasks to the available processor cores.
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