Distributed Information Technologies
Source: Sandia National Laboratories
Date: 7/1/95    Record No.: 10155
Contact: Rich Palmer, 510-294-13126

Distributed Information Technologies
Sandia has a major role in developing technologies for distributed information systems that will contribute to building the "National Information Infrastructure." Industry has needs similar to DOE's Defense Programs to use cost-effective distributed information systems to access and process information. The issues are the same: manipulating large data sets, moving them around efficiently, and dealing with privacy and security issues. DOE labs have developed synthetic data sets as benchmarks for participants to perform their own validations and comparisons. The goal is to be able to run problems on very large parallel or distributed systems via high-speed networks.

Sandia has also built extensive testbeds to develop and evaluate distributed applications over Asynchronous Transfer Mode (ATM) networks tying together distributed computing resources. The testbeds include long-link emulators that simulate delays and errors encountered in wide-area networks over large distances. To complement those testbeds, Sandia has also developed a Monte-Carlo simulation-based modeling capability for studying realistic network component performance and issues such as congestion control mechanisms for large networks. By including the proper physical representations of traffic models for sources and sink, the same modeling capability could be used to simulate the performance, utilization, and potential overload of wide-area electrical transmission grids. (IT)