Application-Specific Optical Interconnects for Embedded Multiprocessors
ARMY RESEARCH LAB ADELPHI MD
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Embedded systems are distinguished from general-purpose computers in that they consist of special-purpose hardware and software optimized for a specific task. They are pervasive in Army systems, appearing in soldier radios, sensor systems, vehicle control, communication systems, and many other applications. This paper focuses on multiprocessor embedded systems targeted towards signal, image, and video processing applications requiring large computing power and having real-time performance requirements. As transistor sizes shrink, interconnects represent a significant bottleneck for embedded systems designers. Several groups are researching optical interconnects to cope with this trend. Optical interconnects enable new system architectures. These new architectures in turn require new methods for high-level application mapping and hardwaresoftware co-design. In this presentation, we discuss high-level scheduling and interconnect topology synthesis techniques for embedded multiprocessors. We focus on designs that are streamlined for one or more digital signal processing DSP applications. That is, we seek to synthesize an application specific interconnect topology for a multiprocessor DSP design. We show that flexible interconnect topologies that allow single-hop communication between processors offer advantages for reduced power and latency.
- Electrooptical and Optoelectronic Devices
- Computer Hardware
- Manufacturing and Industrial Engineering and Control of Production Systems