With a fresh CUDA 5.0 Linux install on CentOS 5.5, I am not able to gdb. So I am wondering if you still need a dedicated GPU for the Linux cuda-gdb? I tried it with the Vesa device driver for X11, but get the same result. Profiling works, running the app works, but trying to run cuda-gdb gives :
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x2aaaaaaab000
Any suggestions?