Title :
Spectral analysis of timestamp data on unsynchronized computer systems
Author :
Barnes, R.N. ; Younan, N.H. ; Harden, J.C.
Author_Institution :
NSF Eng. Res. Center for Comput. Field Simulation, Mississippi State Univ., MS, USA
Abstract :
The MSU ERC UltraScope system consists of a distributed computing system, custom PCI cards, and GPS receivers. The UltraScope system allows precision timestamping of events in a distributed application on a system where the CPU and PCI clocks are synchronous. This paper investigates methods by which the UltraScope system can be expanded to asynchronous systems. The count offset and clock properties for an asynchronous system are computed. The spectrum of these characteristics are analyzed to try to improve the accuracy of the UltraScope system on this class of computing systems
Keywords :
Global Positioning System; distributed processing; parallel architectures; spectral analysis; synchronisation; GPS receivers; MSU ERC UltraScope system; PCI cards; asynchronous computer system; distributed computing system; spectral analysis; timestamp data; Application software; Central Processing Unit; Clocks; Counting circuits; Distributed computing; Frequency synchronization; Global Positioning System; Hardware; Probes; Spectral analysis;
Conference_Titel :
System Theory, 2001. Proceedings of the 33rd Southeastern Symposium on
Conference_Location :
Athens, OH
Print_ISBN :
0-7803-6661-1
DOI :
10.1109/SSST.2001.918536
