OpenCL Kernel debugging on NVIDIA GPUs

Hello Everybody,

I am trying to debug few OpenCL kernels on NVIDIA GPUs, I would like to know if there is a debugger for OpenCL Kernels on NVIDIA GPUs.
Also, I would be very happy if you could share about any project initiatives happening around gdb towards addressing debugging of OpenCL kernels on NVIDIA GPUs.

Thanks in advance,
Shamjith

There is still no debugger for opencl of nvidia gup now