Name
Title | ||
|---|---|---|
A Mathematical Model and Scheduling Heuristics for Satisfying Prioritized Data Requests in an Oversubscribed Communication Network |
Abstract | ||
|---|---|---|
Providing up-to-date input to users' applications is an important data management problem for a distributed computing environment, where each data storage location and intermediate node may have specific data available, storage limitations, and communication links available. Sites in the network request data items and each request has an associated deadline and priority. In a military situation, the data staging problem involves positioning data for facilitating a faster access time when it is needed by programs that will aid in decision making. This work concentrates on solving a basic version of the data staging problem in which all parameter values for the communication system and the data request information represent the best known information collected so far and stay fixed throughout the scheduling process. The network is assumed to be oversubscribed and not all requests for data items can be satisfied. A mathematical model for the basic data staging problem is introduced. Then, three multiple-source shortest-path algorithm-based heuristics for finding a near-optimal schedule of the communication steps for staging the data are presented. Each heuristic can be used with each of four cost criteria developed. Thus, 12 implementations are examined. In addition, two different weightings for the relative importance of different priority levels are considered. The performance of the proposed heuristics are evaluated and compared by simulations. The proposed heuristics are shown to perform well with respect to upper and lower bounds. Furthermore, the heuristics and a complex cost criterion allow more highest priority messages to be received than a simple-cost-based heuristic that schedules all highest priority messages first. |
Year | DOI | Venue |
|---|---|---|
2000 | 10.1109/71.879779 | IEEE Trans. Parallel Distrib. Syst. |
Keywords | Field | DocType |
specific data,important data management problem,positioning data,data item,oversubscribed communication network,highest priority message,basic data,proposed heuristics,data request information,scheduling heuristics,network request data item,mathematical model,prioritized data requests,data storage location,heuristics,performance,communication system,heterogeneous computing,upper and lower bounds,data storage,distributed computing environment,environmental management,data management,memory,communication network,shortest path algorithm,communication networks,distributed processing,satisfiability,distributed computing | Heuristic,Telecommunications network,Access time,Scheduling (computing),Computer science,Communications system,Real-time computing,Schedule,Heuristics,Data management,Distributed computing | Journal |
Volume | Issue | ISSN |
11 | 9 | 1045-9219 |
Citations | PageRank | References |
26 | 1.15 | 15 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mitchell D. Theys | 1 | 1031 | 57.11 |
| min tan | 2 | 131 | 9.34 |
| noah b beck | 3 | 103 | 11.45 |
| Howard Jay Siegel | 4 | 5428 | 689.33 |
| Michael Jurczyk | 5 | 57 | 7.81 |