16.8 Notes for OSCAR and Rocks Users

gdb is part of the default Linux installation and should be available on your system. You will need to add ddd to your system if you wish to use it. Since OSCAR installs X Window System only on the head node, you will not be able to run ddd on your compute nodes. Rather, you will need to run gdb on your compute node as shown in the last example in this chapter.

gdb and ddd are included with Rocks on the frontend and compute nodes. However, you'll need to forward ddd sessions to the frontend using the DISPLAY environment variable since the X Window System is not set up to run locally on compute nodes.