Abstract
Tracing the execution of a sequential program is easy — one need merely single step the program and record the elements of the program's state which are changed. Such a trace would be useful in validating that a program meets its specifications or showing how a particular run of a program fails to meet its specifications. The lack of a global time frame and the disjoint address spaces of the constituent processes makes the extrapolation of the sequential tracing technique into the domain of distributed systems difficult. This article develops a means by which a distributed program that uses synchronous communication may be traced.
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