Back End Examples

Here are some examples of the "back ends" that could be used by various types of project.

SETI@home with local data servers

• A splitter program generates data files. For each data file, calls the BOINC server library to create a workunit record and several result records, and stores the data file on disk of a data server.
• A garbage collector program deletes data files for which enough results have been returned. Generates new result records as needed.
• A result handler program checks for new results. Parses result files, and transfers contents to a separate "science database". Does redundancy checking, and marks result records as valid or invalid.

As above, but the splitter program writes data files to DLT tape. The result records are generated, using the URL of a selected data server. The tape is mailed to the data server. An operator at the data server transfers the files to disk, than uses a web control panel to mark the batch as ready, which marks the result records as ready.