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Integration Of Heterogeneous Teaching Resources In The Network Environment

Posted on:2006-03-02Degree:MasterType:Thesis
Country:ChinaCandidate:Q YangFull Text:PDF
GTID:2208360152997452Subject:Computer software and theory
Abstract/Summary:PDF Full Text Request
Nowadays, Grid becomes an important information technology in the world,which aims to realize high performance resource sharing and cooperation and toeliminate information and resource island.Based on the concepts and technologies of Grid and web service. OGSA defines aunified exposed service semantics, the Grid Service. A Grid Service is an enhancedWeb service. In OGSA grid everything is encapsulated as Grid Service and the Gridbecomes the set of grid services. Using WSDL and related open specifications. OpenGrid Service Infrastructure defines the standard mechanism for creating, naming, anddiscovering transient Grid service instances, providing location transparency andmultiple protocol binding for service instances and supporting integration withunderlying native platform facilities. It also defines interfaces and associatedconventions, mechanisms required for creating composing sophisticated distributedsystems, including lifetime management, change management, and notification. Thebirth of OGSA indicates the Grid is not only used in scientific computing area, butalso used to provide wide, fundamental network environmental supports tocommercial applications, in order to realize more convenient information sharing andinteraction.Now, Globus Toolkit V3 is the main reference implementation of OGSA, whichprovides the core service for security, information discovery, data management,communication, error detection, portability and so on. The main components includesGrid resource allocation and manager GRAM, which provides secure and reliableservice creation and management; Monitoring and Discovery Service MDS providesinformation discovery through soft-state registering, data modeling and partialregistering; Grid Security Infrastructure GSI supports single-logon, delegation andcredential projection; other services such as data management are also included.This thesis describes the basic content and running mechanism of OGSA in detail,and analyzes the OGSA service-oriented model. Then, a Grid environment that isconstructed on the base of the Globus Toolkit 3.2 open platform, use grid techniqueconform isomerous didactical resource, strive to eliminate resource solitude island,...
Keywords/Search Tags:Grid, Grid Service, Open Grid Services Architecture, Service-Oriented Architecture
PDF Full Text Request
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