Resynchronization of Cyclo-Static Dataflow Graphs

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Provided by: edaa
Topic: Hardware
Format: PDF
Parallel stream processing applications are often executed on shared-memory multiprocessor systems. Synchronization between tasks is needed to guarantee correct functional behavior. An increase in the communication granularity of the tasks in the parallel application can decrease the synchronization overhead. However using coarser-grained synchronization can result in deadlock or violation of the throughput constraint for the application in case of cyclic data dependencies. Resynchronization tries to change the synchronization behavior in order to reduce the synchronization overhead. Determining the amount of resynchronization while preventing deadlock and satisfying the throughput constraint of the application, forms a global analysis problem.
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