mirror of https://github.com/BOINC/boinc.git
20 lines
742 B
HTML
20 lines
742 B
HTML
<h2>Compute model: remote file access</h2>
|
|
|
|
<p>
|
|
Output files can be designated as sticky but not upload-when-present.
|
|
Sometimes this is done because the file will be used as an
|
|
input for a later workunit;
|
|
it may also be done to spread large output data across
|
|
participant disks, in cases where the data may be too large
|
|
to store on the project back-end.
|
|
|
|
<p>
|
|
To access such a file,
|
|
the back end inserts a <b>file access request</b> in the database.
|
|
This specifies a file and a data-server URL.
|
|
When a host storing the file contacts the scheduling server
|
|
(which may not happen for a while)
|
|
the scheduling server forwards the file access request.
|
|
The host confirms the file transfer when it is completed;
|
|
the back-end must poll for this event.
|