A Modulo Scheduling Algorithm for a Coarse-Grain Reconfigurable Array Template

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Hardware
Format: PDF
Coarse Grain Reconfigurable Arrays (CGRAs) have been drawing attention due to its programmability and performance. Compilation onto CGRAs is still an open problem. Several groups have proposed algorithms that software pipeline loops onto CGRAs. In this paper, the authors present an efficient modulo scheduling algorithm for a CGRA template. The novelties of the approach are the separation of resource reservation and scheduling, use of a compact three-dimensional architecture graph and a resource usage aware relocation algorithm. Preliminary experiments indicate that the proposed algorithm can find schedules with small initiation intervals within a reasonable amount of time.
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