Load Balancing Method for Multiprocessor Image DSPs Using a Multistage Switching Network

概要

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One of the greatest problems in realtime image processing with multiprocessor Digital Signal Processors (DSPs) is the dynamic balancing of an unevenly distributed load on certain processors at a certain time. This paper proposes a dynamic load balancing method for multiprocessor DSPs that can achieve Vector Quantization (VQ) with Motion Compensation (MC) in a multistage switching network. First, it is shown that at most 30% of all picture elements require VQ processes that consume large amounts of processing power. A multiprocessor scheduling method is then introduced that uses a multistage switching network to achieve load balancing.The proposed multiprocessor DSP can reduce the required processing power by using the load balancing method. Finally, packet switching and circuit switching are compared as operating modes for a multistage switching network, and it is shown that the processing power required for the former can be reduced to 20% less than that required for the latter.
一般社団法人情報処理学会の論文
1992-10-31