[stephen272]

You hit the nail on the head. All of that on top of the fact that he is comparing a top of the line GPU against a mediocre i3 processor. GPU to CPU comparisons are always apples to oranges, but this is pretty bad.

I would like to see an OpenCL kernel that is run on both the GPU and CPU to possibly even the playing field a little.

[paulmd]

You can compile Thrust using a device target of OpenMP, so no need to rewrite it in OpenCL.