Hi,
I am trying to enable the HD Graphics 5500 of i7-5600U on CentOS7.2. I posted a similar inquiry to the following Intel's community and had a suggestion to ask at this forum:
No "CL_DEVICE_TYPE_GPU" with Intel HD5600 on CentOS 7
Let me explain my issue again. First, I installed "Driver and library(runtime) packages" into my CentOS 7.2, i.e., CentOS Linux (3.10.0-327.36.3.el7.x86_64) 7 (Core), which is obtained by upgrading CentOS7 (1511). I followed the Installation instructions in the following page:
OpenCL™ Drivers and Runtimes for Intel® Architecture | Intel® Software
The installation has done without any problem. Then, using the new kernel "4.7.0.intel.r3.1", I tested the sample code "CapsBasic" obtained from
OpenCL™ Platform/Device Capabilities Viewer Sample | Intel® Software.
There was no problem in its compilation & linking to OpenCL. However, the result is not what I was expecting. The output looks like
[ttaka@localhost CapsBasic]$ ./CapsBasic
Number of available platforms: 1
Platform names:
[0] Intel(R) OpenCL [Selected]
Number of devices available for each type:
CL_DEVICE_TYPE_CPU: 1
CL_DEVICE_TYPE_GPU: 0
CL_DEVICE_TYPE_ACCELERATOR: 0*** Detailed information for each device ***
CL_DEVICE_TYPE_CPU[0]
CL_DEVICE_NAME: Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz
CL_DEVICE_AVAILABLE: 1
CL_DEVICE_VENDOR: Intel(R) Corporation
CL_DEVICE_PROFILE: FULL_PROFILE
CL_DEVICE_VERSION: OpenCL 2.0 (Build 330)
CL_DRIVER_VERSION: 1.2.0.330
CL_DEVICE_OPENCL_C_VERSION: OpenCL C 2.0
CL_DEVICE_MAX_COMPUTE_UNITS: 4
CL_DEVICE_MAX_CLOCK_FREQUENCY: 2600
CL_DEVICE_MAX_WORK_GROUP_SIZE: 8192
CL_DEVICE_ADDRESS_BITS: 64
CL_DEVICE_MEM_BASE_ADDR_ALIGN: 1024
CL_DEVICE_MAX_MEM_ALLOC_SIZE: 4174946304
CL_DEVICE_GLOBAL_MEM_SIZE: 16699785216
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE: 131072
CL_DEVICE_GLOBAL_MEM_CACHE_SIZE: 262144
CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE: 64
CL_DEVICE_LOCAL_MEM_SIZE: 32768
CL_DEVICE_PROFILING_TIMER_RESOLUTION: 1
CL_DEVICE_IMAGE_SUPPORT: 1
CL_DEVICE_ERROR_CORRECTION_SUPPORT: 0
CL_DEVICE_HOST_UNIFIED_MEMORY: 1
CL_DEVICE_EXTENSIONS: cl_khr_icd 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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT: 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG: 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT: 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE: 1
CL_DEVICE_NATIVE_VECTOR_WIDTH_INT: 8
CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG: 4
CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT: 8
CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE: 4
Clearly, there is no available GPU as an OpenCL device. Is this possible? As far as I know, Intel HD 5500 is included in the 5th generation HD. The PC being used here is Lenovo Thinkpad x250. With windows8, the PC could program the HD 5500 via OpenCL 1.2.
Also, I installed Media Server 2017 to CentOS7.2, which was reinstalled from scratch. However, at the verification step, I cound not find /dev/dri and go forward any more.
I really appreciate any suggestions or information.
Best regards,
Toru Takahashi