[travisoliphant]

It's hard to see how you could have read the article given your comment. This is certainly not a copy of some original presentation. The article may not be motivated well and certainly can be critiqued on many levels.

But it describes a specific reason why using a high-level language to directly program the GPU can be extremely useful --- you can easily build, test, and iterate on execution order to improve performance. Hardware is changing, and we need better tools to write code for it.

The author uses CUDA Python, but you could do similar things with PyCUDA --- it's the emphasis on the scheduling that is the relevant point.