CSC/ECE 506 Fall 2007/wiki3 8 a1

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Background

The protocols discussed here were created to allow coherence to be maintained on a system that has no global bus system that allows snooping to take place, and, has distributed memory that is physically separated. These systems usually consist of PCM (Processor-Control-Memory) nodes connected by a network; the systems also have network assists to allow communication to take place.

For a system to be coherent it must:

  1. Provide a state machine
  2. Manage the coherence protocol
    • Determine when the coherence protocol should be used

SSCI (Simple Scalable Coherence Interface) protocol

== IEEE SCI (Scalable Cohttp://pg.ece.ncsu.edu/mediawiki/index.php?title=CSC/ECE_506_Fall_2007/wiki3_8_a1&action=edit Editing CSC/ECE 506 Fall 2007/wiki3 8 a1 - PG_MediaWikiherence Interface) protocol ==

SSCI and IEE SCI Protocol Similarities

IEE SCI Protocol Additional States

Links

IEEE SCI Standard Abstract and Content Summary - http://standards.ieee.org/reading/ieee/std_public/description/busarch/1596-1992_desc.html
IEEE SCI on ieexplore - http://ieeexplore.ieee.org/iel5/285/3365/00113656.pdf?tp=&arnumber=113656&isnumber=3365

References

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