Detection of Strong Unstable Predicates in Distributed Programs

  • Authors:
  • Vijay K. Garg;Brian Waldecker

  • Affiliations:
  • -;-

  • Venue:
  • IEEE Transactions on Parallel and Distributed Systems
  • Year:
  • 1996

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Abstract

This paper discusses detection of global predicates in a distributed program. A run of a distributed program results in a set of sequential traces, one for each process. These traces may be combined to form many global sequences consistent with the single run of the program. A strong global predicate is true in a run if it is true for all global sequences consistent with the run. We present algorithms which detect if the given strong global predicate became true in a run of a distributed program. Our algorithms can be executed on line as well as off line. Moreover, our algorithms do not assume that underlying channels satisfy FIFO ordering.