topic OpenCL optimization with HD Graphics 4600 in Graphics

OpenCL optimization with HD Graphics 4600

hyin1 — Thu, 14 Apr 2016 03:46:38 GMT

I wrote an OpenCL program running on Intel HD Graphics 4600 processor graphics. The number of compute unit is 20 by query clGetDeviceInfo. The work items within a work group run in a compute unit, there are 20 compute units, so more than 20 work groups can be active on 4600. But there is no information about processing elements in each compute unit. If the work group size is 256, which means there are 256 threads in each work group. How do these threads execute in each compute unit. From the performance perspective, 64, 128, 256, which work group size is preferred. Thanks.

Re: OpenCL optimization with HD Graphics 4600

Bartosz_S_Intel — Thu, 14 Apr 2016 13:45:55 GMT

Hi,

One of our lead engineers gave a great presentation about this kind of details that you are looking for: https://software.intel.com/en-us/articles/taking-advantage-of-intel-graphics-with-opencl Taking Advantage of Intel® Graphics with OpenCL | Intel® Developer Zone

I think this webinar will answer all your questions and probably even more.

We also have the OpenCL SDK forum where you can get answer to OpenCL specific questions: http://software.intel.com/en-us/forums/intel-opencl-sdk http://software.intel.com/en-us/forums/intel-opencl-sdk

Bartek

Re: OpenCL optimization with HD Graphics 4600

idata — Thu, 14 Apr 2016 20:58:07 GMT

Hello, All:

Thank you BartoszSochacki for providing the correct support channel to yinhao

If any additional questions or inquiries are present, feel free to contact us back.

Regards,

Esteban C