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Time Synchronized Measurements in Cluster Computing Systems



Alan Mink, Robert J. Carpenter, M M. Courson


We describe hardware time synchronization instrumentation that we have developed which achieves time synchronization of better than one microsecond. The purpose of this instrumentation is for Quality of Service characterization of parallel and distributed computing and of network communications. Using this instrumentation we measure the accuracy achieved by the NIST Autolock time synchronization algorithm, built upon the well-known Network Time Protocol (NTP) time exchange, and the various factors contributing to its performance for both local and remote computing clusters. We show that such software algorithms, once their parameters are tuned for the expected delays, can achieve accuracy close to single digit microseconds.
Conference Dates
August 1, 2000
Conference Title
International Society for Computers and Their Applications


autolock cluster computing, GPS, multikron, NTP, time synchronization


Mink, A. , Carpenter, R. and Courson, M. (2000), Time Synchronized Measurements in Cluster Computing Systems, International Society for Computers and Their Applications, [online], (Accessed June 14, 2024)


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Created August 1, 2000, Updated February 17, 2017