File > Rescan Libraries

Scans the shared library (dynamic link) information looking for new information. If new information is found, it is reloaded. If, however, the information is up-to-date, no updating occurs.

You would use this command when you have recompiled or moved a shared library. This command was sometimes needed in previous versions of TotalView. It is seldom, if ever, needed currently. However, it does exist if an unforeseen problem occurs.