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dc.contributor.authorFriedman, Royen_US
dc.contributor.authorvan Renesse, Robberten_US
dc.date.accessioned2007-04-23T18:03:50Z
dc.date.available2007-04-23T18:03:50Z
dc.date.issued1995-08en_US
dc.identifier.citationhttp://techreports.library.cornell.edu:8081/Dienst/UI/1.0/Display/cul.cs/TR95-1537en_US
dc.identifier.urihttps://hdl.handle.net/1813/7194
dc.description.abstractA formal definition of {\em strong virtual synchrony}, capturing the semantics of virtual synchrony as implemented in Horus, is presented. This definition has the nice property that every message is delivered within the view in which it was sent. However, it is shown that in order to implement strong virtual synchrony, the application program has to block messages during view changes. An alternative definition, called {\em weak virtual synchrony}, which can be implemented without blocking messages, is then presented. This definition still guarantees that messages will be delivered within the view in which they were sent, only that it uses a slightly weaker notion of what the view in which a message was sent is. An implementation of weak virtual synchrony that does not block messages during view changes is developed, and it is shown how to use a system that provides weak virtual synchrony even when strong virtual synchrony is actually needed. To capture additional ordering requirements, the definition of {\em ordered virtual synchrony} is presented. Finally, it is discussed how to extend the definitions in order to cope with the fact that a process can become a member of more than one group.en_US
dc.format.extent280721 bytes
dc.format.extent274394 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/postscript
dc.language.isoen_USen_US
dc.publisherCornell Universityen_US
dc.subjectcomputer scienceen_US
dc.subjecttechnical reporten_US
dc.titleStrong and Weak Virtual Synchrony in Horusen_US
dc.typetechnical reporten_US


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