multi-gpu example

is there any good multi-gpu example out there?
I went through few doc on multi-gpu, but none has some good example that I can run/test/modify.

check the cuda samples. e.g. simpleMultiGPU

if you want to see more, go to the cuda samples page:

http://docs.nvidia.com/cuda/cuda-samples/index.html#abstract

and search on “multi-GPU”