[Intel opencl versions and performance in GPUPI 3.2]

On 10/3/2022 at 10:42 PM, Guest TonyBombassolo said:

I did some software re-installs on my machine recently and found a small oddity with the Intel Open CL versions and the GPUPI 3.2 1b benchmark for CPU.

If you run GPIPU 3.2 with the Intel OpenCL 3.0 executable (for me, it failed every single time after step 4), even though I knew my rig was stable and had run this benchmark before, so I checked my screenshots of the past, to verify settings.

When I looked at the actual GPUPI 3.2 executable in my failed runs, it showed 

Allocated Device Memory: 80mb

When I looked at the successful runs I had done in the past, it showed 

Allocated Device Memory 335.56mb

At this point I noticed I had OpenCl 3.0 from 2022 instead of the Intel OpenCL 2.1 I had in my previous runs. 

So if you are running into repeated failures on GPUPI 3.2 1b for CPU, verify you have the correct OpenCL for Intel processors (unless you are AMD ofc)

Once I uninstalled OpenCL 3.0 from 2022 and reinstalled from the opencl_runtime_18.1_x64_setup.msi installer, everything worked perfectly.

I did have to reinstall GPU driver though because Intel uninstall removes it from GPU driver too for some stupid reason.

 

Thanks mate! Your above post helped me fix the same issue on my system