The status of the time warp operating system

Authors:
D. Jefferson;B. Beckman;L. Blume;M. Diloreto;P. Hontalas;P. Reiher;K. Sturdevant;J. Tupman;J. Wedel;F. Wieland;H. Younger
Affiliations:
UCLA;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory;Jet Propulsion Laboratory
Venue:
C3P Proceedings of the third conference on Hypercube concurrent computers and applications: Architecture, software, computer systems, and general issues - Volume 1
Year:
1988

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Abstract

The Time Warp Operating System (TWOS) is a special-purpose operating system designed to support parallel discrete event simulation. It has been under experimental development at the Jet Propulsion Laboratory for four years, and runs primarily on the JPL/Caltech Mark III Hypercube, although it has been ported to several other systems. Its main distinction is that it incorporates a full implementation of the Time Warp mechanism, which is based on the unusual synchronization primitives of process rollback and message-antimessage annihilation.In this paper we discuss the status of the TWOS project at JPL, and present preliminary data from some of the performance experiments we have conducted on a Pool Balls benchmark, along with our analysis of them.