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International Journal of High Performance Computing Applications
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Compensation of Measurement Overhead in Parallel Performance Profiling

Allen D. Malony

DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE, UNIVERSITY OF OREGON

Sameer Shende

DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE, UNIVERSITY OF OREGON, SAMEER{at}CS.UOREGON.EDU

Alan Morris

DEPARTMENT OF COMPUTER AND INFORMATION SCIENCE, UNIVERSITY OF OREGON

Felix Wolf

JOHN VON NEUMANN INSTITUTE FOR COMPUTING (NIC), FORSCHUNGSZENTRUM JÜLICH, GERMANY, DEPARTMENT OF COMPUTER SCIENCE, RWTH AACHEN UNIVERSITY, 52056 AACHEN, GERMANY

Performance profiling generates measurement overhead during parallel program execution. Measurement overhead, in turn, introduces intrusion in a program's runtime performance behavior. Intrusion can be mitigated by controlling instrumentation degree, allowing a tradeoff of accuracy for detail. Alternatively, the accuracy in profile results can be improved by reducing the intrusion error due to measurement overhead. Models for compensation of measurement overhead in parallel performance profiling are described. An approach based on rational reconstruction is used to understand properties of compensation solutions for different parallel scenarios. From this analysis, a general algorithm for on-the-fly overhead assessment and compensation is derived.

Key Words: performance measurement and analysis • parallel computing • profiling • intrusion • overhead compensation

International Journal of High Performance Computing Applications, Vol. 21, No. 2, 174-194 (2007)
DOI: 10.1177/1094342007077862
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