I just tried CLBenchmark and found that it does not run properly when I select CPU as the device to benchmark. Is this a known issue? This seems to be AMD OpenCL runtime issue since I tried the same benchmark on Intel machine with Intel OpenCL runtime and it works fine. I used CLBenchmark 1.1.3 and Catalyst 13.6 Beta 2. I also had APP SDK 2.8.1 installed. Phenom II X3 710 and HD6950 & GTX680. The benchmark ran fine on HD6950 and GTX680.