OpenCL не обнаруживает GPU

Question

Я установил AMD APP SDK, и вот моя проблема. Образцы OpenCL не обнаруживают графический процессор. HelloWorld дать мне это:

[thomas@Clemence:/opt/AMDAPP/samples/opencl/bin/x86_64]$ ./HelloWorld 
No GPU device available. 
Choose CPU as default device. 
input string: 
GdkknVnqkc 

output string: 
HelloWorld 
Passed! 

А вот выход clinfo

[thomas@Clemence:~/Documents/radeontop]$ clinfo 
Number of platforms:     1 
Platform Profile:    FULL_PROFILE 
Platform Version:    OpenCL 1.2 AMD-APP (1214.3) 
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 


Platform Name:    AMD Accelerated Parallel Processing 
Number of devices:    1 
Device Type:      CL_DEVICE_TYPE_CPU 
Device ID:     4098 
Board name:     
Max compute units:    8 
Max work items dimensions:   3 
Max work items[0]:    1024 
Max work items[1]:    1024 
Max work items[2]:    1024 
Max work group size:     1024 
Preferred vector width char:    16 
Preferred vector width short:   8 
Preferred vector width int:   4 
Preferred vector width long:    2 
Preferred vector width float:   8 
Preferred vector width double:  4 
Native vector width char:   16 
Native vector width short:   8 
Native vector width int:    4 
Native vector width long:   2 
Native vector width float:   8 
Native vector width double:   4 
Max clock frequency:     3633Mhz 
Address bits:     64 
Max memory allocation:   4182872064 
Image support:    Yes 
Max number of images read arguments:   128 
Max number of images write arguments:  8 
Max image 2D width:    8192 
Max image 2D height:     8192 
Max image 3D width:    2048 
Max image 3D height:     2048 
Max image 3D depth:    2048 
Max samplers within kernel:   16 
Max size of kernel argument:    4096 
Alignment (bits) of base address:  1024 
Minimum alignment (bytes) for any datatype: 128 
Single precision floating point capability 
Denorms:      Yes 
Quiet NaNs:     Yes 
Round to nearest even:   Yes 
Round to zero:    Yes 
Round to +ve and infinity:   Yes 
IEEE754-2008 fused multiply-add:   Yes 
Cache type:     Read/Write 
Cache line size:     64 
Cache size:     32768 
Global memory size:    16731488256 
Constant buffer size:    65536 
Max number of constant args:    8 
Local memory type:    Global 
Local memory size:    32768 
Kernel Preferred work group size multiple: 1 
Error correction support:   0 
Unified memory for Host and Device:  1 
Profiling timer resolution:   1 
Device endianess:    Little 
Available:     Yes 
Compiler available:    Yes 
Execution capabilities:    
Execute OpenCL kernels:   Yes 
Execute native function:    Yes 
Queue properties:     
Out-of-Order:    No 
Profiling :     Yes 
Platform ID:      0x00007f4ef63f0fc0 
Name:      Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz 
Vendor:     GenuineIntel 
Device OpenCL C version:    OpenCL C 1.2 
Driver version:    1214.3 (sse2,avx) 
Profile:      FULL_PROFILE 
Version:      OpenCL 1.2 AMD-APP (1214.3) 
Extensions:     cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt 

Что я должен сделать для того, чтобы иметь доступ к GPU? Заранее спасибо. Я работаю на Ubuntu 14.04.3 LTS Trusty Kernel 3,9

здесь свою видеокарту:

[thomas@elsa:~]$ lspci | grep -i --color 'vga' 
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th 
Gen Core Processor Integrated Graphics Controller (rev 06) 
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Oland XT [Radeon HD 8670/R7 250/350] 

Answer 1

Не все GPU's в поддержке рынка OpenCL. Вы уже проверяете, поддерживает ли ваш GPU OpenCL? Ваши драйверы GPU обновлены?

Когда это heppen для меня, основной причиной было изменение видеокарты, но без обновления драйвера используется драйвер окна deafult.