Isomerous CMP (Chip Multi-Processor) static state task scheduling method
A task scheduling and task technology, applied in the direction of program startup/switching, resource allocation, multi-program device, etc., can solve the problem of excessive processor core idle time, untimely processing of redundant tasks, and affecting heterogeneous CMP performance, etc. problem, to achieve the effect of improving resource utilization, reducing communication overhead, and improving task scheduling efficiency
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[0045] The static task scheduling method of heterogeneous CMP of the present invention includes the following steps:
[0046] Step 1: Such as figure 1 , figure 2 As shown, the linear clustering method is used to merge all tasks that meet the task merging conditions in the DAG graph to their parent tasks;
[0047] Depth-first traverses all tasks in the DAG graph, and merges all tasks that meet the merge conditions. By merging the tasks whose communication overhead accounts for a large proportion of the total task completion time, shorten the total task completion time and optimize the task graph.
[0048] Task merging must meet two conditions at the same time:
[0049] (1) The current task has a single parent task and is the only child task of the only parent task;
[0050] (2) The communication overhead between the current task and its only parent task is greater than or equal to its maximum computing overhead on different processor cores, that is, C(v i ,v j )≥max(W(v j ,p q )}, the...
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