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[obara]

As goal to the faster calculation,

I start to use A10-7850A and make OpenCL program for A10-7850A.

In the case of CL_DEVICE_TYPE_CPU, the program runs very well,

but in the case of CL_DEVICE_TYPE_GPU, HOST can't find "GPU" at clGetPlatformIDs.

I think that I miss someting to need to be installed, but I can't find.

APU(CPU/GPU):AMD A10-7850A

OS: CentOS 6.5

AMDAPPSDK: AMD-APP-SDK-v2.9-lnx64

Installed drivers:

    amd-catalyst-14-4-linux-x86-x86-64  or

    amd_13.30_rc3_linux_jan13_2014

[sudarshan]

Hi,

Can you run clinfo (this should be in your /usr/bin as a part of app sdk installation) and check if it is finding GPU device?

[obara]

Hi sudarshan

Thank you for your reply.

I got the following by "./clinfo" and I confirmed there is GPU device.

But I can't understand reason why OpenCL can't find GPU device when executing clGetPlatformIDs API.

Any advice is appreciated.

-------------------------------------------------------------------------------------

# ./clinfo

Number of platforms:				1
Platform Profile:				FULL_PROFILE
Platform Version:				OpenCL 1.2 AMD-APP (1445.5)
Platform Name:				AMD Accelerated Parallel Processing
Platform Vendor:				Advanced Micro Devices, Inc.
Platform Extensions:				cl_khr_icd cl_amd_event_callback cl_amd_offline_devices cl_amd_hsa

Platform Name:				AMD Accelerated Parallel Processing
Number of devices:				2
Device Type:				CL_DEVICE_TYPE_GPU
Device ID:				4098
Board name:				AMD Radeon(TM) R7 Graphics
Device Topology:				PCI[ B#0, D#1, F#0 ]
Max compute units:				8
Max work items dimensions:			3
Max work items[0]:				256
Max work items[1]:				256
Max work items[2]:				256
Max work group size:				256
Preferred vector width char:			4
Preferred vector width short:			2
Preferred vector width int:			1
Preferred vector width long:			1
Preferred vector width float:			1

[sudarshan]

Since it is an APU, both CPU and GPU are on same platform (there should be only one platform). You should query devices (clGetDeviceIDs()) to get all the devices on this platform. This should list both CPU and GPU.

[obara]

Hi Sudarshan

Thank you for your kindly reply.

I'm terribly sorry. I have a mistake.

I solved the trouble by myself.

The trouble was caused by missing to install

Catalyst driver "Generate Distribution Specific Driver Package".

After installing it, the trouble was solved.

Thank you so much