Managing commitments in a multi agent system using passive bids

Author

Furano, Fabrizio ; Hanushevsky, Andrew

Author_Institution

Univ. Ca´´ Foscari Venezia, Padova, Italy

fYear

2005

fDate

19-22 Sept. 2005

Firstpage

698

Lastpage

701

Abstract

In this paper we describe the xrootd file access system, designed in collaboration between the Stanford Linear Accelerator Laboratory (SLAC), USA and Istituto Nazionale di Fisica Nucleare (INFN), Padova, Italy. The system was designed to provide access to over 10ÿ7 files representing several petabytes of experimental physics data. We analyze the agent-based query algorithm employed by this system to provide a scalable means of locating files that are scattered across a very large file server cluster. In the process we introduce the concept of a passive bidding scheme and describe its relationship to file serving commitments as a way to substantially reduce message traffic.

Keywords

distributed databases; file servers; multi-agent systems; network operating systems; query processing; agent-based query algorithm; commitment management; experimental physics data; multiagent system; passive bids; very large file server cluster; xrootd file access system; Access protocols; Aggregates; Clustering algorithms; Collaboration; Control systems; File servers; Information management; Intelligent agent; Network servers; USA Councils;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Agent Technology, IEEE/WIC/ACM International Conference on

Print_ISBN

0-7695-2416-8

Type

conf

DOI

10.1109/IAT.2005.95

Filename

1565626