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Wire-Streaming Processors on 2-D Nanowire Fabrics

T. Wang, M. Ben-Naser, Y. Guo and C. Andras Moritz
University of Massachusetts at Amherst, US

nanowire, nanowires array, nanoscale circuits, streaming processors

In this paper, we describe our initial architectural designs based on nanowires (NWs). We call our initial integrated circuit systems Wire-Streaming Processors (WISP) because in these designs, in order to preserve the density advantages of nanodevices, data is streamed through the fabric with minimal control/feedback paths and intermediate values during processing are often stored on the wire without requiring explicit latching. We show detailed circuits developed on 2-D NW fabrics and show for the first time a complete 2-bit datapath and 3-bit opcode WISP design, WISP-0. We identify the challenges and show techniques to work around fabric-specific constraints. Our initial WISP-0 design successfully addresses many of the fabric-specific constraints achieving a density advantage of 40X compared to the projected 30-nm CMOS implementation. The work proposed here forms a key part of our effort to build NASICs: Nanoscale Application-Specific Integrated Circuits and it is based on extensive research on understanding emerging nanoscale device and fabrication constraints.

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