Run OpenCL on CPU with no integrated graphics?

[Peppermint]

Hi,

I understand OpenCL is mostly aimed general programming on the graphics card. I have heard it’s also possible to run OpenCL on CPU’s which have integrated graphics. But what I am not sure about – is it possible to run OpenCL on non-integrated graphics CPU’s, like the i9-10900KF? so far i have managed to run CL on my graphics card (and that’s the whole reason I picked up the lib), but just curious if it’s possible on the hardware mentioned above as well.

Ahoj

[Dark_Photon]

I think you may be looking for an OpenCL driver that exposes OpenCL support for the CPU as a CPU, or one which exposes OpenCL support for the CPU as a GPU.

For the former, websearch for “opencl CL_DEVICE_TYPE_CPU”. That’s the OpenCL lingo used to query for CPU devices. Not sure of the latest status, but according to this 10 year old post, Intel’s and AMD’s OpenCL drivers support this. I’d start with the one that matches your CPU:

NO Cpu device found

Hello forum, I have just started learning opencl programming and following through the “opencl programming book”. While query the number of platforms from my system, i only get the GPU device but not the CPU. And if try to get the cpu explicitly as follows: errNum = clGetDeviceIDs( platformIDs[i], CL_DEVICE_TYPE_CPU, 0, NULL, &numDevices); I get the answer no cpu device found. I would like to know what i am missing in the process. I have a cpu device in the system i am …

You might also check out Mesa3D. It looks like it supports some OpenCL, with and without GPUs (see Mesa Matrix).

[Dark_Photon]

@Peppermint

I have also been struggling to find dirvers for intel (non-integrated graphics) CPU’s , similar to what is mentioned in the linked thread

I don’t have any experience with Intel OpenCL runtimes, but since you’re on Linux and have an Intel CPU without integrated graphics support, you might check out the OpenCL runtime here:

• OpenCL™ Runtimes for Intel® Processors

titled:

• Intel® CPU Runtime for OpenCL™ Applications 18.1 for Linux* OS (64bit only)

It sounds like their “Intel Graphics Runtimes” are for those with integrated graphics, and “Intel CPU Runtimes” are for those possibly without integrated graphics. A comment on the page suggests you can install both at the same time and they can coexist, but there’s no benefit of doing so in your case.

Do you happen to know if the Mesa also applies to intel CPU’s?

No, I sure don’t. I didn’t realize it even supported any OpenCL until I did a quick websearch in response to your original post.

I would ask the Mesa3D guys for details here. They have a mailing list.

[Peppermint]

Thanks a lot for the clear reply. I’ll probably need the runtime in the link you have provided then

Cheers