I'm using i5-3570k and OpenCL SDK 2013 Beta. While testing I noticed a failed test in CLBenchmark 1.1.1. Vision: Optical Flow on both CPU and GPU.
Thanks for letting us know about the failure. We'll look into it.
I was able to reproduce it. I'll debug this further and file a bug.
That is a known issue, we have ticket submitted on it CSSD100013787, the problem is in the kernel code of the Benchmark, need to influence Benchmark owners to fix it.
I reported the issue to clbenchmark developers.