My environment
CPU Intel i5 3570k 3,40Ghz
GPU AMD Radeon 7970 GHz 1.1 Ghz
CENTOS 6.3 (alias RED HAT 6.3) 64Bit
Catalyst 13.1 Driver 9.012
The opencl testsuite (opencv_test_ocl) coming with opencv release 2.4.4 fails in 186 out of 1288 tests,
while comparing CPU with GPU results. eg. CopyMakeBorder , Blend.Accuracy,
BruteForceMatcher ..
These errors do not show up with Catalyst 12.10 Driver 9.002
Catalyst 12.10 fails only in one function (pyrup (Gaussian Pyramid Up Conversion)).