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ATB: Area-Time Response Balancing Algorithm for Scheduling Real-Time Hardware Tasks

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Executive Summary

In this paper, the authors describe a novel scheduling algorithm for the execution of hardware tasks with real-time constraints onto partially and dynamically reconfigurable FPGAs. The Area-Time response Balancing scheduling algorithm (ATB) is inspired by the well-known Earliest Deadline First (EDF) algorithm, which is extended with a technique for reducing the fragmentation on FPGA's reconfigurable area. This technique promotes the reuse of the resources that are released when great area tasks finish their execution by smaller area tasks as long as the real-time constraints permit to do so. Providing an exclusively time-based algorithm, such as EDF, with support for dealing with area-related issues ensures the best results.

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