I am a graduate student researching computer architecture. I am looking for OpenCL code samples. I am very happy with the CUDA code samples which come with the SDK and I am looking for a similar set of benchmarks for OpenCL.
AFAIK, there isn’t an OpenCL compiler available from nVidia yet (unless it is only available to registered developers). I’m sure that when the CUDA toolkit comes out with OpenCL support (whichever version that may be), there will be OpenCL examples available in the SDK. In fact, I would bet that most of the existing samples will be rewritten in both OpenCL and DirectX 11 so that you can compare/contrast each sample across the three platforms.
Note that the SDK is not a set of benchmarks. Samples are written to be educational, illustrating a particular technique or approach. As such, most of the samples are not highly-tuned implementations.