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OpenCL

pontiacgtx_
Journeyman III
‎06-11-2019 09:18 AM

Why does device's opencl version using cl2.hpp shows a opencl 1.2 device while the SDK has opencl 2.0?

when I get the cl::device info with CL_DEVICE_VERSION flag it shows I have a gpu compatible with opencl1.2 but it is in fact opencl 2.0 (the platform shows it is compatible with 2.1 and the Fiji has support for OpenCL 2.0)

I am using Windows 10 1809,AMD APP SDK 3.0,Adrenalin 19.5.1

so what do I need for enabling/using opencl 2.0 in the device?

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3 Replies
dipak
Big Boss
‎06-12-2019 01:42 AM

Thank you for reporting this. Could you please share the setup details like OS, GPU card, graphics driver version, SDK etc. and provide the clinfo output?

Thanks.

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pontiacgtx_
In response to dipak
Journeyman III
‎06-12-2019 08:58 AM

Windows 10 1809,17763.503

R9 FURY Nitro

AMD APP OpenCL SDK 3.0

Adrenalin 19.5.1

the problem that in C++ the cl::devices in  devices.getInfo<CL_DRIVER_VERSION>() shows the device is only 1.2 but in clinfo shows it is compatible with OpenCL 2.0 AMD-APP (2841.5)

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dipak
In response to pontiacgtx_
Big Boss
‎06-13-2019 02:20 AM

Thank you for sharing the above details.

As clinfo correctly reports the  device version as OpenCL 2.0 but you are observing OpenCL 1.2 from your application, I have one suggestion. Please make sure you are building the application as a 64-bit application (i.e. x64) not as a 32-bit application (i.e. Win32). Because OpenCL 2.0 is only supported for 64-bit applications.

Thanks.