Error in CodeXL: Not able to produce resource usage info

I am using AMD CodeXL to analyse OpenCL kernels on AMD GPUs. I have successfully installed CodeXL-Linux-1.0 in my ubuntu machine, which also includes AMD APP KernelAnalyzer2.

For few of my OpenCL programs, AMD KernelAnalyzer successfully generating resource usage info. But for some kernels it is failing and not generating resource usage info.

What could be the reason ?

Thanks in advance !

Do those kernels use barrier? CodeXL doesn’t support debugging of kernels with barriers yet.