I'm using RHEL 6.2 and nsight eclipse edition on it to debug my cuda programs. There exists a problem with the debug mode, i.e. cuda-gdb on a customized Eclipse. When the PC enters the first Cuda API call, debugging terminates with these warnings:
warning: Can not parse XML OS data; XML support was disabled at compile time
warning: Error removing breakpoint 0
I've also found a relevant bug report in eclipse bugs, but it seems that it had been forwarded to gdb: https://bugs.eclipse.org/bugs/show_bug.cgi?id=350426
After some observation it seemed as if libexpat.so should have been linked to cuda-gdb in compile time. Have you been able to work around this problem?
cuda-gdb on my system has such an output:
[cbekar@ergo Research]$ ldd /usr/local/cuda/bin/cuda-gdb
linux-vdso.so.1 => (0x00007fff8e1ff000)
libncurses.so.5 => /lib64/libncurses.so.5 (0x0000003498600000)
libz.so.1 => /lib64/libz.so.1 (0x000000348e600000)
libm.so.6 => /lib64/libm.so.6 (0x000000348da00000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x000000348e200000)
libdl.so.2 => /lib64/libdl.so.2 (0x000000348de00000)
libutil.so.1 => /lib64/libutil.so.1 (0x000000349da00000)
libpython2.6.so.1.0 => /usr/lib64/libpython2.6.so.1.0 (0x0000003499200000)
libc.so.6 => /lib64/libc.so.6 (0x000000348d600000)
libtinfo.so.5 => /lib64/libtinfo.so.5 (0x000000349e600000)
/lib64/ld-linux-x86-64.so.2 (0x000000348d200000)
But, here is a hint of how ldd should have been like: https://bugs.archlinux.org/task/27841
ps. I'm also aware of incompatibility of Cuda SDK 5.0 RC with my RHEL 6.2; Nsight is documented as only compatible for RHEL 6.0 and 6.1 whereas the download link says RHEL 6.x.
(Reposting my comment as an answer in case someone else stumbles upon this thread).
Unfortunately, due to some technical constraints CUDA debuggers require a dedicated GPU on Linux and Mac platforms. The underlying issue is that suspending the GPU on a breakpoint may hang a desktop environment when it tries to do rendering on the suspended GPU.
"warning: Can not parse ..." is not a bug, it is simply a message about GDB flavour used as a basis for cuda-gdb. In no way it limits features available in cuda-gdb and Nsight Visual Debugger.