To debug a program running on a remote computer, enter the computer name in the Debug on Host area, or select it from the dropdown if already entered.
Figure 33 – Debug on Host area
To enter a new host, select the Add host button and enter its name or IP address in the displayed dialog box.
Figure 34 – Add Host dialog
You can add multiple hosts separated by a space. Alternatively, add the IP address. For example:
server1 server2 server3
or
10.5.6.123 10.5.7.124
If TotalView cannot connect to the host, it displays an error dialog.
Figure 35 – Add Host Failure popup
To modify the launch string or to view the default string TotalView will use to launch the remote debug session, select the Advanced button () to open the Remote Server Launch Command field.
Figure 36 – Remote server launch command
You can edit this string and then click Save as preference to have TotalView save it to your preferences. Once saved, you can view or edit it at File > Preferences > Launch Strings tab.
Note that if you hover your cursor inside the text field, a popup displays the substitutions used in the launch string.
Figure 37 – Remote server launch command substitutions
If TotalView supports your program’s parallel process runtime library (for example, MPI, UPC, or CAF), it automatically connects to remote hosts. For more information, see Chapter 21, "Setting Up Parallel Debugging Sessions".
) to open the Remote Server Launch Command field. 
