Applications and Application Versions
From Unofficial BOINC Wiki
An Application represents a collection of related computation. It consists of a program (perhaps with versions for different platforms) and a set of Work Units and Results. A project can operate many applications. Information about Applications are maintained in the Application Table in the BOINC Database, and can be created using the XADD Tool.
An Application Program may go through a sequence of versions. A particular version, compiled for a particular platform, is called an Application Version. An Application Version can consist of multiple files: for example, a controller script, pre- and post-processing programs, and a primary program.
Each Application has a minimum version. When a client is sent work for an application, it is also sent the latest Application Version for its Platform. It is sent work only if this version is the minimum or greater.
Application Versions are maintained in the app_version table in the BOINC Database. Each entry includes an XML document describing the files that make up the Application Version:
<file_info> ... </file_info> [ ... ] <app_version> <app_name>foobar</app_name> <version_num>4</version_num> <file_ref> <file_name>program_1</file_name> <main_program/> </file_ref> <file_ref> <file_name>library_12</file_name> </file_ref> </app_version>
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 Copyright ©
- 2005 University of California
- 2005 Paul D. Buck
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.