OpenCL: increase maximum number of pipe arguments

Question

I have a design composed of several kernels communicated via pipes.

One of my kernels has more than 20 pipes, but the limitation on a Intel i5 CPU seems to be 16:

# clinfo | grep pipe
Max number of pipe args                         16
Max active pipe reservations                    65535
Max pipe packet size                            1024

Question: is there any way to increase number of pipes args?

Any help would be appreciated!

Answer 1

No, and yes.

No, because this is a descriptive information related to your hardware. That line is the output of the following code:

{ CLINFO_BOTH, DINFO(CL_DEVICE_MAX_PIPE_ARGS, "Max number of pipe args", int), dev_is_20 },

CL_DEVICE_MAX_PIPE_ARGS seams to be a new feature of opencl 2.0 New in version 2015.2.

This is the same like how many cores you have.

If you have only 2 cpu cores you hardly using 8.

Yes, because there is a way to increase number of pipes args. You Have to buy an other CPU one which supports more arguments.

My answer is probably disappointing. Sorry Good luck with your project.