Sangam: A Confluence of Knowledge Streams

Network-on-Chip Optimization: as shown through a novel LDPC Decoder Design

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dc.contributor Dr. Gregory T. Byrd, Committee Member
dc.contributor Dr. Paul D. Franzon, Committee Member
dc.contributor Dr. Donald L. Bitzer, Committee Member
dc.contributor Dr. William Rhett Davis, Committee Chair
dc.creator Mineo, Christopher Alexander
dc.date 2010-08-19T18:14:15Z
dc.date 2010-08-19T18:14:15Z
dc.date 2010-04-02
dc.date.accessioned 2023-02-28T17:08:59Z
dc.date.available 2023-02-28T17:08:59Z
dc.identifier etd-03252010-144344
dc.identifier http://www.lib.ncsu.edu/resolver/1840.16/6170
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/265782
dc.description In this work we describe the network-on-chip (NoC) simulator, which fills the gap between architectural level and circuit level NoC simulation. The core is a fast, high level transaction-based NoC simulator, which accesses carefully compiled power, timing, and area models for basic NoC components built from detailed circuit simulation. It makes use of the architectural evaluator, which performs a detailed global interconnect analysis within the framework of industry-standard design tools. Using low density parity check decoding (LDPC) as a test vehicle, the NoC simulator is used in an NoC design study, and shows a method by which on-chip networks can be optimized. The foundation for architectural and transaction based modeling is set by a demonstration of the functional 3D NoC Test Chip, a 3-ary 3-cube on-chip interconnection network implemented in a 3-tier three dimensional integrated circuit (3DIC) technology. The chip, being among the first and only functional synthesized academic 3DIC's, not only demonstrates the feasibility of inter-tier signaling in a 3DIC, but has enabled power measurements that bring credibility to our power modeling methodology. We discuss a characterization methodology for parameterized NoC router components, so that we can quickly and easily estimate the power, performance, and area overhead for a wide range of NoC systems. While the completed models are provided so that they may be used for architectural evaluation independent from the remainder of our simulation framework, we describe the architecture of the NoC simulator. The simulator is used to study various LDPC and NoC parameters to help with high level design decision making. The results make a compelling case for the 2D and 3D torus networks and very shallow network memory buffers. We also introduce the concept and show the importance of processing element throttle. Using the simulator, a pareto optimal set of NoC configurations for our application is produced.
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.
dc.subject LDPC decoding
dc.subject 3DIC
dc.subject network-on-chip
dc.subject digital design methodology
dc.subject NoC optimization
dc.subject circuit characterization
dc.subject transaction-based modeling
dc.subject system-level power estimation
dc.title Network-on-Chip Optimization: as shown through a novel LDPC Decoder Design


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