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Distributed testing of concurrent systems: vector clocks to the rescue. (English) Zbl 1432.68317
Ciobanu, Gabriel (ed.) et al., Theoretical aspects of computing – ICTAC 2014. 11th international colloquium, Bucharest, Romania, September 17–19, 2014. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 8687, 369-387 (2014).
Summary: The $$\mathbf {ioco}$$ relation has become a standard in model-based conformance testing. The $$\mathbf {co-ioco}$$ conformance relation is an extension of this relation to concurrent systems specified with true-concurrency models. This relation assumes a global control and observation of the system under test, which is not usually realistic in the case of physically distributed systems. Such systems can be partially observed at each of their points of control and observation by the sequences of inputs and outputs exchanged with their environment. Unfortunately, in general, global observation cannot be reconstructed from local ones, so global conformance cannot be decided with local tests. We propose to append time stamps to the observable actions of the system under test in order to regain global conformance from local testing.
For the entire collection see [Zbl 1296.68006].

##### MSC:
 68Q85 Models and methods for concurrent and distributed computing (process algebras, bisimulation, transition nets, etc.)
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