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CASCON
1994

Integrating real-time and partial-order information in event-data displays

9 years 5 months ago
Integrating real-time and partial-order information in event-data displays
The events occurring in the execution of a distributed or parallel application are related by a partial, rather than a total, order. We have developed prototype software that collects such events during program execution and produces a graphical display consistent with the partial order. Such a display can be very helpful in understanding and debugging distributed and parallel applications. However, using only partial-order information does not allow the performance characteristics of an application to be understood. Integrating real-time information with the partial order can provide a display that is useful for understanding both functional and performance aspects of the application. An algorithm is required to adjust the collected real-time information, to ensure that real times are consistent with the partial order. Lamport's clock algorithm provides such an adjustment, but can signi cantly distort the real-time values. It was necessary to develop a more complex algorithm, us...
David J. Taylor, Michael H. Coffin
Added 02 Nov 2010
Updated 02 Nov 2010
Type Conference
Year 1994
Where CASCON
Authors David J. Taylor, Michael H. Coffin
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