An Isotach Network Simulator

Author:Hopenwasser, Lance, Department of Computer ScienceUniversity of Virginia

We have developed a simulator of Isotach systems which run on a Myrinet network. The simulator allows us to study the performance characteristics of the system and provides a means for experimenting with alternative implementations of Isotach networks. The rate at which tokens flow through the network determines the rate at which Isotach logical time progresses; therefore, token behavior is of keen interest. The simulator gathers performance data that is used to examine the behavior of tokens within the network under several different conditions. The simulator is also capable of obtaining similar data on barriers that make use of the Isotach network. These barriers are of interest, because they can be used to establish network-wide checkpoints in addition to other application-level uses. The simulator can provide data on characteristics of the network that most affect barrier completion time. Furthermore, the simulator can be used to compare the Isotach barrier algorithm to a simple centralized non-Isotach barrier algorithm. We present some of the issues that influenced the design of the simulator.

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Source Citation:

Hopenwasser, Lance. "An Isotach Network Simulator." University of Virginia Dept. of Computer Science Tech Report (1998).

University of Virginia, Department of Computer Science
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