Robert F. Gordon, Edward A. MacNair, et al.
WSC 1985
It is known that clock synchronization can be achieved in the presence of faulty processors as long as the nonfaulty processors are connected, provided that some authentication technique is used. Without authentication the number of faults that can be tolerated has been an open question. Here we show that if we restrict logical clocks to running within some linear functions of real time, then clock synchronization is impossible without authentication when one-third or more of the processors are faulty. We also provide a lower bound on the closeness to which simultaneity can be achieved in the network as a function of the transmission and processing delay properties of the network. © 1986.
Robert F. Gordon, Edward A. MacNair, et al.
WSC 1985
Corneliu Constantinescu
SPIE Optical Engineering + Applications 2009
F.M. Schellenberg, M. Levenson, et al.
BACUS Symposium on Photomask Technology and Management 1991
Sonia Cafieri, Jon Lee, et al.
Journal of Global Optimization