Unable to use OpenCL on HD4000 on Windows 8 Pro

Unable to use OpenCL on HD4000 on Windows 8 Pro

Hi,

I was asked by an Intel employee on the Graphics support forum to ask a question here about OpenCL. Here is the link: http://communities.intel.com/message/173757#173757

Can you please read that other question and let me know if you have any additional things I can try to get this working? Thanks.

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What exactly is the issue here? Are you not able to install the HD graphics driver? Or are you not able to compile and/or run the OpenCL programs? Also, just to make sure - you have a system with dual graphics and not switchable graphics. Correct? I have win8 pro and I am able to run the SDK samples.

So please provide details on the exact error and I'll try to help.

Thanks,
Raghu

Cita:

Raghupathi Muthyalampalli (Intel) escribió:

What exactly is the issue here? Are you not able to install the HD graphics driver? Or are you not able to compile and/or run the OpenCL programs? Also, just to make sure - you have a system with dual graphics and not switchable graphics. Correct? I have win8 pro and I am able to run the SDK samples.

So please provide details on the exact error and I'll try to help.

Thanks,
Raghu

I can install the HD graphics driver just fine. I can compile and run OpenCL programs just fine -- ON THE CPU. However, the GPU support for running OpenCL on the HD4000 graphics processor is simply not there at all -- it doesn't show up as a device in the OpenCL runtime. That is the precise problem I have. Also, yes, the system is dual graphics, not "switchable".

What do you have under HKLM\Software\Khronos\OpenCL\Vendors and HKLM\Software\Wow6432Node\Khronos\OpenCL\Vendors?

Also, can you list the igd*.dlls under system32 and syswow64?

Cita:

Raghupathi Muthyalampalli (Intel) escribió:

What do you have under HKLM\Software\Khronos\OpenCL\Vendors and HKLM\Software\Wow6432Node\Khronos\OpenCL\Vendors?

Also, can you list the igd*.dlls under system32 and syswow64?


[HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\OpenCL\Vendors]

"amdocl64.dll"=dword:00000000

"IntelOpenCL64.dll"=dword:00000000
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Khronos\OpenCL\Vendors]

"amdocl.dll"=dword:00000000

"amdocl64.dll"=dword:00000000

"IntelOpenCL32.dll"=dword:00000000
C:\Users\Sean>dir C:\Windows\system32\igd*dll C:\Windows\syswow64\igd*dll

 Volume in drive C has no label.

 Volume Serial Number is 02B5-761F
 Directory of C:\Windows\system32
10/22/2012  05:40 PM        12,854,272 igd10umd64.dll

11/06/2012  10:27 PM         3,580,928 igdbcl64.dll

11/06/2012  10:27 PM            80,384 igdde64.dll

07/25/2012  10:05 PM            79,872 igdDiag.dll

11/06/2012  10:27 PM        27,418,112 igdfcl64.dll

11/06/2012  10:27 PM        27,664,896 igdrcl64.dll

10/22/2012  05:40 PM        12,615,168 igdumd64.dll

               7 File(s)     84,293,632 bytes
 Directory of C:\Windows\syswow64
10/22/2012  05:40 PM        11,171,840 igd10umd32.dll

11/27/2012  07:04 PM         2,898,944 igdbcl32.dll

11/27/2012  07:04 PM            64,512 igdde32.dll

11/27/2012  07:04 PM        21,810,688 igdfcl32.dll

11/27/2012  07:03 PM        27,643,904 igdrcl32.dll

10/22/2012  05:40 PM        11,049,472 igdumd32.dll

               6 File(s)     74,639,360 bytes

               0 Dir(s)  2,026,745,274,368 bytes free

Hi,

Any updates on this issue? Is it user error, or system error?

Sorry for the delay. Assuming you have the IntelOpenCL64.dll in system32 and IntelOpenCL32.dll in syswow64, looks like you have all the components.

Not sure if you already tried this, but can you try this:
- uninstall the SDK
- uninstall the graphics driver
- remove the reg keys (HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\OpenCL\Vendors and HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Khronos\OpenCL\Vendors)
- install the driver
- install the sdk and run gpucapsviewer

Please let me know if you can see the opencl devices.

Thanks,
Raghu

Tried all the steps and it doesn't work. Tried on a clean install of Windows 8, same problem.

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