Hi to all,
I have a dell computer with Debian wheezy on it. I've installed fglrx from repositories and the AMDAPP from the AMD website.
As you can see, I'm running the proprietary drivers right now and I thought OpenCL shou.d have to work.
$ glxinfo | grep render
direct rendering: Yes
OpenGL renderer string: AMD Radeon HD 7400M Series
GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image,
But, when I launch my test code, that is what I get:
$ ./example-0
Warning: CL Wrapper running in debug mode
AVAILABLE PLATFORM(s):
[0] AMD Accelerated Parallel Processing - Advanced Micro Devices, Inc. (OpenCL 1.2 AMD-APP (1113.2))
Choose a platform: 0
AVAILABLE DEVICES(s) for current platform:
[0] Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz - GenuineIntel (OpenCL 1.2 AMD-APP (1113.2))
Choose a device:
I don't understand why my radeon video card is not detected as valid device.
Thank you in advance for any help
Hi,
Please check the "device_type" option when listing the available devices [clGetDeviceIDs]? It should be either CL_DEVICE_TYPE_GPU or CL_DEVICE_TYPE_ALL to access all available GPUs.
Regards,
It is already _ALL. I show you some gdb dump
Breakpoint 1, clwGetDeviceList (platform=0x0, n=0x7fffffffddb4) at cl_wrapper.c:511
511 __OpenCLLatestError = clGetDeviceIDs(currentPlatform,CL_DEVICE_TYPE_ALL,0,NULL,&length);
(gdb) n
513 list = (cl_device_id*)malloc(length*sizeof(cl_device_id));
(gdb) p length
$1 = 1
As you can see, length var is set by clGetDeviceIDs at 1.
Yes, it seems your OpenCL run-time is unable to detect the GPU device. Are the "clinfo" and "fglrxinfo" commands able to list the GPU device correctly?
Regards,
clinfo couldnt find the GPU, even if fglrxinfo does
$ clinfo
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 AMD-APP (1113.2)
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
Vendor ID: 1002h
Board name:
Max compute units: 4
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: 2300Mhz
Address bits: 64
Max memory allocation: 1944346624
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: 1944346624
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: 0x00007fdf47d2a4e0
Name: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz
Vendor: GenuineIntel
Device OpenCL C version: OpenCL C 1.2
Driver version: 1113.2 (sse2,avx)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1113.2)
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_popcnt
$ fglrxinfo
display: screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7400M Series
OpenGL version string: 4.2.11762 Compatibility Profile Context
I looked a bit around and I guess that something is interfering with the integrated intel graphics. Is it possible that? If it is so, how can I disable it or forcing cl to detect the gpu anyway?!
Hi,
Thanks for sharing these information. That is reason the clGetDeviceIDs was unable to detect the GPU.
I don't know whether your assumption is correct or not, or how to exactly solve the problem. I would suggest you to re-install the driver once again and check whether the problem solves or not. If still persists, I can forward this issue to concerned team.
Also, there is another forum called AMD Support and Game Forums (for hardware and driver support) where you can post your query.
Regards,