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    SpiNNaker: design and implementation of a GALS multicore system-on-chip

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    Authors
    Plana, Luis A.
    Clark, David
    Davidson, Simon
    Furber, Steve B.
    Garside, Jim D.
    Painkras, Eustace
    Pepper, Jeffrey
    Temple, Steve
    Bainbridge, John
    Issue Date
    2011
    Subjects
    asynchronous system
    network-on-chip
    
    Metadata
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    Abstract
    The design and implementation of Globally Asynchronous Locally Synchronous Systems-on-Chip is a challenging activity. The large size and complexity of the systems require the use of Computer-Aided Design (CAD) tools but, unfortunately, most tools do not work adequately with asynchronous circuits. This paper describes the successful design and implementation of SpiNNaker, a GALS multi-core system-on-chip. The processes was completed using commercial CAD tools from synthesis to layout. A hierarchical methodology was devised to deal with the asynchronous sections of the system, encapsulating and validating timing assumptions at each level. The crossbar topology combined with a pipelined asynchronous fabric implementation allows the on-chip network to meet the stringent requirements of the system. The implementation methodology constrains the design in a way which allows the tools to complete their tasks successfully. A first test chip, with reduced resources and complexity was taped-out using the proposed methodology. Test chips were received in December 2009 and were fully functional. The methodology had to be modified to cope with the increased complexity of the SpiNNaker SoC. SpiNNaker chips were delivered in May 2011 and were also fully operational, and the interconnect requirements were met.
    Citation
    Plana, L.; Clark, D.; Davidson, S.; Furber, S.; Garside, J.; Painkras, E.; Pepper, E.; Temple, S. and Bainbridge, J. (2011) 'SpiNNaker: Design and Implementation of a GALS Multi-Core System-on-Chip' 7 (4), article 17:1-17 ACM Journal on Emerging Technologies in Computing Systems
    Publisher
    ACM
    Journal
    ACM Journal on Emerging Technologies in Computing Systems
    URI
    http://hdl.handle.net/10547/279165
    DOI
    10.1145/2043643.2043647
    Additional Links
    http://dl.acm.org/citation.cfm?doid=2043643.2043647
    Type
    Article
    Language
    en
    ISSN
    15504832
    ae974a485f413a2113503eed53cd6c53
    10.1145/2043643.2043647
    Scopus Count
    Collections
    Centre for Research in Distributed Technologies (CREDIT)

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