Preferences

You can specify preferences determining and limiting how BOINC uses your computers. Preferences are divided into two groups:

Global preferences

Global preferences apply to all projects in which you participate. They include:

Whether work (computation and network transfer) should be done while the host is being used (i.e. during keyboard and mouse input).
Whether work should be done while the computer is being powered by batteries (for laptop users).
Whether to wait for user confirmation before making network connections.
Min and max days of work to keep on disk. If the host is frequently disconnected from the Internet, the min should be at least as long as the typical period of disconnection. The larger the difference between min and max, the less often the BOINC client will connect to the Internet.
Maximum disk space used by BOINC.
Maximum percentage of free space used by BOINC.
Minimum disk space to keep free.

You can view and edit your global preferences through a web interface, at the site of any project in which you participate. Changes are automatically propagated to all your hosts; this is done the next time the host contacts the project's server, so there may be some delay.

Per-project preferences

There is a separate set of per-project preferences for each project in which you participate. They include:

Resource share: if projects contend for resources, the amount allocated to a project is proportional to this number.
Whether to show email address on web site
Whether project should send emails to user
Project-specific preferences (defined by the project; e.g., to specify graphics color schemes).

You can view and edit per-project preferences through a web interface at the project's web site.