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Lookup NU author(s): Professor Maciej KoutnyORCiD, Dr Lukasz Mikulski
In the classical Mazurkiewicz trace approach the behaviour of a concurrent system is described in terms of sequential observations that differ only with respect to their ordering of independent actions. This paper aims to determine a full generalisation of the trace model to the case that actions can be observed as occurring simultaneously. Thus observations are sequences of steps, i.e., sets of actions. This leads to an extended trace model based on three relations between events: simultaneity, serialisability, and interleaving. Whereas the underlying causal structures of traces are based on dependencies between actions leading to a partial order interpretation, more general causal orders are needed to describe the invariant relations between the action occurrences in a generalised trace. We present a complete picture including extended dependence graphs and a characterisation in terms of the (most) general order structures.
Author(s): Janicki R, Kleijn J, Koutny M, Mikulski L
Publication type: Report
Publication status: Published
Series Title: School of Computing Science Technical Report Series
Year: 2014
Pages: 39
Print publication date: 01/10/2014
Online publication date: 01/10/2014
Report Number: 1436
Institution: School of Computing Science, University of Newcastle upon Tyne
Place Published: Newcastle upon Tyne
URL: http://www.cs.ncl.ac.uk/publications/trs/papers/1436.pdf
