Can Intel I7 3rd or 4rd genration run OpenCl on GPU processor graphics

Hi,

I'm using  Intel I7 3rd and 4rd.

(I'm using Linux)

I dont have an external GPU, so I intend to use the GPU on the processor.

-- Can I run OpenCL code on the processor's GPU ?

-- If not, which programming language can I use to run on  processor's GPU ?

Thanks