I'm learning about OpenCL and crypto currencies and trying to setup a system to learn on.
I'm using Ubuntu 12.04 x64 with the AMD Catalyst Drivers 13.1 installed and AMD APP SDK 2.8 installed with an ATI Radeon HD 6350 w/ 1GB RAM. I can run 'clinfo' and it shows the GPU and CPU are available.
To test OpenCL, I found this wiki page ( OpenCLHowTo - Andreas Klöckner's wiki ) and downloaded the code and built the samples cleanly. From this I get:
$ ./print-devices
platform 0: vendor 'Advanced Micro Devices, Inc.'
device 0: 'Cedar'
device 1: 'Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz'
So this and clinfo, it all looks good.
I then run the demo.
$ ./cl-demo 1000000 10
Choose platform:
[0] Advanced Micro Devices, Inc.
Enter choice: 0
Choose device:
[0] Cedar
[1] Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
Enter choice: 0
---------------------------------------------------------------------
NAME: Cedar
VENDOR: Advanced Micro Devices, Inc.
PROFILE: FULL_PROFILE
VERSION: OpenCL 1.2 AMD-APP (1214.3)
EXTENSIONS: 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_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_amd_image2d_from_buffer_read_only
DRIVER_VERSION: 1214.3
Type: GPU
EXECUTION_CAPABILITIES: Kernel
GLOBAL_MEM_CACHE_TYPE: None (0)
CL_DEVICE_LOCAL_MEM_TYPE: Local (1)
SINGLE_FP_CONFIG: 0x3e
QUEUE_PROPERTIES: 0x2
VENDOR_ID: 4098
MAX_COMPUTE_UNITS: 2
MAX_WORK_ITEM_DIMENSIONS: 3
MAX_WORK_GROUP_SIZE: 128
PREFERRED_VECTOR_WIDTH_CHAR: 16
PREFERRED_VECTOR_WIDTH_SHORT: 8
PREFERRED_VECTOR_WIDTH_INT: 4
PREFERRED_VECTOR_WIDTH_LONG: 2
PREFERRED_VECTOR_WIDTH_FLOAT: 4
PREFERRED_VECTOR_WIDTH_DOUBLE: 0
MAX_CLOCK_FREQUENCY: 650
ADDRESS_BITS: 32
MAX_MEM_ALLOC_SIZE: 134217728
IMAGE_SUPPORT: 1
MAX_READ_IMAGE_ARGS: 128
MAX_WRITE_IMAGE_ARGS: 8
IMAGE2D_MAX_WIDTH: 16384
IMAGE2D_MAX_HEIGHT: 16384
IMAGE3D_MAX_WIDTH: 2048
IMAGE3D_MAX_HEIGHT: 2048
IMAGE3D_MAX_DEPTH: 2048
MAX_SAMPLERS: 16
MAX_PARAMETER_SIZE: 1024
MEM_BASE_ADDR_ALIGN: 2048
MIN_DATA_TYPE_ALIGN_SIZE: 128
GLOBAL_MEM_CACHELINE_SIZE: 0
GLOBAL_MEM_CACHE_SIZE: 0
GLOBAL_MEM_SIZE: 536870912
MAX_CONSTANT_BUFFER_SIZE: 65536
MAX_CONSTANT_ARGS: 8
LOCAL_MEM_SIZE: 32768
ERROR_CORRECTION_SUPPORT: 0
PROFILING_TIMER_RESOLUTION: 1
ENDIAN_LITTLE: 1
AVAILABLE: 1
COMPILER_AVAILABLE: 1
MAX_WORK_GROUP_SIZES: 128 128 128
---------------------------------------------------------------------
*** build of 'sum' on 'Cedar' said:
"/tmp/OCLUCIPUW.cl", line 1: error: can't enable all OpenCL extensions or
unrecognized OpenCL extension
#pragma OPENCL EXTENSION cl_khr_fp64: enable
^
"/tmp/OCLUCIPUW.cl", line 4: error: identifier "double" is undefined
__global const double *a,
^
"/tmp/OCLUCIPUW.cl", line 5: error: identifier "double" is undefined
__global const double *b,
^
"/tmp/OCLUCIPUW.cl", line 6: error: identifier "double" is undefined
__global double *c,
^
4 errors detected in the compilation of "/tmp/OCLUCIPUW.cl".
Frontend phase failed compilation.
*** (end of message)
*** 'clBuildProgram' in 'cl-helper.c' on line 470 failed with error 'build program failure'.
Aborted (core dumped)
So that ain't good. I can run the demo just fine if I select the CPU.
Also, I've tried a crypto miner (bfgminer) that utilizes OpenCL/GPU and I'm getting know where with that either. When it runs, I get a error of:
OCL 0 failure, attempting to reinitialize
Error -55: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)
OCL 0 failure, disabling!
OCL 0 being disabled
Attempting to reinitialize OCL 0
OCL 0 being re-enabled
Error -55: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)
OCL 0 failure, disabling!
OCL 0 being disabled
Attempting to reinitialize OCL 0
So it appears that the various tools see OpenCL is available on the GPU but when I try run anything on it I get errors.
What am I missing?
