2 Replies Latest reply on Dec 5, 2016 12:47 PM by Intel Corporation

    No "CL_DEVICE_TYPE_GPU" with Intel HD5600 on CentOS 7

    Toru_Takahashi

      Hi,

       

      After installing "SDK for OpenCL Applications Package" and "Driver and library(runtime) packages" into my CentOS 7 according to the page

      OpenCL™ Drivers and Runtimes for Intel® Architecture | Intel® Software,

      I am testing the driver and SDK.

       

      Actually, I could run a sample "CapsBasic.cpp" obtained at

      OpenCL™ Platform/Device Capabilities Viewer Sample | Intel® Software.

      However, the following output shows that GPU is NOT used but CPU is used:

       

      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

       

      How can I enable the GPU, i.e. Intel HD 5600? What I would like to do is to program my Intel HD5600 (as well as CPU cores)  with OpenCL. I do not care about the version of the OpenCL; even 1.2 is okay.

       

      The details of my computer is shown as follows:

       

      % grep -m1 name /proc/cpuinfo

      model name    : Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz

      The above processor is included in the 5th generation Core arch.

       

      % uname -a

      Linux localhost.localdomain 4.7.0.intel.r3.1 #1 SMP Sat Dec 3 23:30:56 JST 2016 x86_64 x86_64 x86_64 GNU/Linux

      The above kernel was created according to the installation instruction linked at "OpenCL™ 2.0 GPU/CPU driver package for Linux* (64-bit)" in the page OpenCL™ Drivers and Runtimes for Intel® Architecture | Intel® Software.  I note that, to recognize the kernel by the boot loader (grub), it was necessary to set "Legacy Boot" instead of "Secure Boot" in the BIOS setup.

       

      Let me know if any other information is necessary.

       

      Best regards,

      Toru Takahashi

       

      Message was edited by: Toru Takahashi I have fixed some typos and alignments.