Analysis of the Effect of Routing Strategies for Parallel Implementations of a Selected Avionics Application
Interim rept. 1 Feb 1992-1 Sep 1993
WRIGHT LAB WRIGHT-PATTERSON AFB OH
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The purpose of this study is to evaluate the Texas Instruments TMS32OC40 C40 digital signal processor for a selected avionics application. In this effort, the C40s on-chip communication ports are benchmarked to give indications of the amount of overhead involved in initiating a message transfer and the data throughput rates of the network. A network of C40s is compared to an iwarp parallel processor to compare the processing capabilities between the C40s store-and-forward router and the iWarps wormhole router. Several network topologies that can easily be constructed from C40s are described, along with ways of partitioning an image processing task across each of them. Performance measurements of both the C40s and iWarps performance on parallelized implementations of the image processing algorithm are detailed, along with estimated measurements for large-scale arrays of C40s. Finally, the C40s computing power is compared with an avionics hardware program being developed at wright Laboratories, System Avionics Division, Information Processing Technology Branch. Parallel processing, Digital signal processing, Routing methods, Embedded computer systems.
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