Is there more detailed info of OpenCL features supported per video card?
For example, my HD 6870 does not support "cl_khr_fp64".
When querying with clGetDeviceInfo and CL_DEVICE_EXTENSIONS, neither cl_khr_fp64 nor cl_amd_fp64, are listed.
It would be useful to know if FP_CONTRACT is supported as well.
I would consider upgrading to a newer video card if it has full cl_khr_fp64 support.