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TNyer
Beginner
340 Views

OpenCL platform / device detection issues on Intel Core i3-7100 HD 630

System Setup Information:
-----------------------------------------
System Used: GIGABYTE Z170N-WIFI
CPU SKU: Intel Core i3-7100 (Kaby Lake-S, S0)
GPU SKU: Intel HD Graphics 630 (Kaby Lake-S GT2) - Integrated Graphics Controller [GIGABYTE]
Processor Line: 7th Generation Intel Core i3 Processor
System BIOS Version: "American Megatrends Inc. F20i , 03/09/2018 12:00 AM"
CMOS settings: -
Graphics Driver Version: 25.20.100.6519
GOP/VBIOS Version: 1046.0
Operating System: Windows 10
OS Version: Pro (10.0.17763)
API: OpenCL
Occurs on non-Intel GPUs?: -

Steps to Reproduce:
-------------------------------
Try to run OpenCL app on i3-7100 (CPU and IGP).

Expected Results:
-------------------------------
To be able to select Intel OpenCL platform and to choose between CPU OpenCL device and GPU (Intel integrated gfx) device.

Actual Results:
-------------------------------
No Intel OpenCL platform found (no additional discrete GPU installed in the system).

Additional Information:
-------------------------------
It seems that Display Driver Uninstaller (DDU) messed up the ICD Loader, after adding registry references, the Intel OpenCL plaform is back, but only OCL CPU device.

https://twitter.com/boost_clock/status/1106312612621545472

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2 Replies
TNyer
Beginner
340 Views

Installed the latest driver - 26.20.100.6709. Before the install, I run DDU, and it seems that DDU removes the ICD registry references because after installing the driver no OpenCL platform was available. The Intel_OpenCL_ICD.dll is now resides in a slightly different location and adding the recommended REG_DWORD objects in the registry crash OpenCL applications on startup.

My ICD location: C:\windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_...\Intel_OpenCL_ICD(32/64).dll

Tutorial ICD location: C:\windows\System32\DriverStore\FileRepository\ig<path_on_your_system>\IntelOpenCL(32/64).dll

Any help would be appreciated!

Michael_C_Intel1
Moderator
340 Views

Hi TiborN,

Addressing this issue here where more OpenCL stakeholders have more visibility.

 

Thanks,

-MichaelC

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