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ranocha opened this issue Jun 22, 2018 · 7 comments
Closed

i7 8700K not found by clinfo on Kubuntu 18.04; missing steps? #57

ranocha opened this issue Jun 22, 2018 · 7 comments

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@ranocha
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ranocha commented Jun 22, 2018

I'm using Kubuntu 18.04 with an i7 8700K and a GeForce GTX 1070 Ti. I've installed the nvidia-cuda-toolkit which adds support for OpenCL on the GPU. Then, I followed the build instructions of Intel Compute Runtime and installed intel-opencl-igdrcl as described. However, clinfo (from the official package lists) is not able to find the Intel OpenCL implementation.

hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ clinfo
Number of platforms                               1
  Platform Name                                   NVIDIA CUDA
  Platform Vendor                                 NVIDIA Corporation
  Platform Version                                OpenCL 1.2 CUDA 9.1.84
  Platform Profile                                FULL_PROFILE
  Platform 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_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer
  Platform Extensions function suffix             NV

  Platform Name                                   NVIDIA CUDA
Number of devices                                 1
  Device Name                                     GeForce GTX 1070 Ti
  Device Vendor                                   NVIDIA Corporation
......

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.11
  ICD loader Profile                              OpenCL 2.1

However, there is an intel.icd file:

hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ ls /etc/OpenCL/vendors/
intel.icd  nvidia.icd
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ cat /etc/OpenCL/vendors/intel.icd 
/opt/intel/opencl/libigdrcl.so

I've seen #20 (comment) and have added the Khronos ICD loader as described there, but the issue remains the same.

Could you please help me? What am I doing wrong? Thanks in advance for your time!
@alalek
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alalek commented Jun 22, 2018

Try to track loaded .so files via LD_DEBUG=files clinfo (attention for failed loads / strange full paths).

@ranocha
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ranocha commented Jun 23, 2018

Thanks for your fast answer. Here is the output:

hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ LD_DEBUG=files clinfo
      2746:
      2746:     WARNING: Unsupported flag value(s) of 0x8000000 in DT_FLAGS_1.
      2746:
      2746:     file=libOpenCL.so.1 [0];  needed by clinfo [0]
      2746:     file=libOpenCL.so.1 [0];  generating link map
      2746:       dynamic: 0x00007f741f430cd0  base: 0x00007f741f227000   size: 0x000000000020a050
      2746:         entry: 0x00007f741f22b180  phdr: 0x00007f741f227040  phnum:                  8
      2746:
      2746:
      2746:     file=libdl.so.2 [0];  needed by clinfo [0]
      2746:     file=libdl.so.2 [0];  generating link map
      2746:       dynamic: 0x00007f741f225d90  base: 0x00007f741f023000   size: 0x0000000000203110
      2746:         entry: 0x00007f741f023e50  phdr: 0x00007f741f023040  phnum:                  7
      2746:
      2746:
      2746:     file=libc.so.6 [0];  needed by clinfo [0]
      2746:     file=libc.so.6 [0];  generating link map
      2746:       dynamic: 0x00007f741f01cb80  base: 0x00007f741ec32000   size: 0x00000000003f0ae0
      2746:         entry: 0x00007f741ec53cb0  phdr: 0x00007f741ec32040  phnum:                 10
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/libc.so.6
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/libdl.so.2
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libOpenCL.so.1
      2746:
      2746:
      2746:     initialize program: clinfo
      2746:
      2746:
      2746:     transferring control: clinfo
      2746:
      2746:
      2746:     file=libnvidia-opencl.so.1 [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 [0]
      2746:     file=libnvidia-opencl.so.1 [0];  generating link map
      2746:       dynamic: 0x00007f741eb2c928  base: 0x00007f741db01000   size: 0x0000000001130d98
      2746:         entry: 0x00007f741dbb30b0  phdr: 0x00007f741db01040  phnum:                  5
      2746:
      2746:
      2746:     file=libm.so.6 [0];  needed by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=libm.so.6 [0];  generating link map
      2746:       dynamic: 0x00007f741daffd90  base: 0x00007f741d763000   size: 0x000000000039d158
      2746:         entry: 0x00007f741d76ea80  phdr: 0x00007f741d763040  phnum:                  7
      2746:
      2746:
      2746:     file=libpthread.so.0 [0];  needed by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=libpthread.so.0 [0];  generating link map
      2746:       dynamic: 0x00007f741d75dd68  base: 0x00007f741d544000   size: 0x000000000021e480
      2746:         entry: 0x00007f741d54a230  phdr: 0x00007f741d544040  phnum:                  9
      2746:
      2746:
      2746:     file=librt.so.1 [0];  needed by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=librt.so.1 [0];  generating link map
      2746:       dynamic: 0x00007f741d542d80  base: 0x00007f741d33c000   size: 0x0000000000207be0
      2746:         entry: 0x00007f741d33e200  phdr: 0x00007f741d33c040  phnum:                  7
      2746:
      2746:
      2746:     file=libnvidia-fatbinaryloader.so.390.48 [0];  needed by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=libnvidia-fatbinaryloader.so.390.48 [0];  generating link map
      2746:       dynamic: 0x00007f741d3358c0  base: 0x00007f741d0f0000   size: 0x000000000024be08
      2746:         entry: 0x00007f741d0f5930  phdr: 0x00007f741d0f0040  phnum:                  5
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/libpthread.so.0
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libnvidia-fatbinaryloader.so.390.48
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/librt.so.1
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/libm.so.6
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1
      2746:
      2746:     opening file= [0]; direct_opencount=2
      2746:
      2746:     opening file= [0]; direct_opencount=3
      2746:
      2746:     opening file= [0]; direct_opencount=4
      2746:
      2746:     opening file= [0]; direct_opencount=5
      2746:
      2746:     clinfo: error: symbol lookup error: undefined symbol: pthread_setaffinity_np (fatal)
      2746:
      2746:     closing file=; direct_opencount=4
      2746:     opening file= [0]; direct_opencount=5
      2746:
      2746:     clinfo: error: symbol lookup error: undefined symbol: pthread_getaffinity_np (fatal)
      2746:
      2746:     closing file=; direct_opencount=4
      2746:     opening file= [0]; direct_opencount=5
      2746:
      2746:     opening file=/usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]; direct_opencount=1
      2746:
      2746:
      2746:     file=/opt/intel/opencl/libigdrcl.so [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 [0]
      2746:     file=/opt/intel/opencl/libigdrcl.so [0];  generating link map
      2746:       dynamic: 0x00007f741d087418  base: 0x00007f741ccbc000   size: 0x0000000000433160
      2746:         entry: 0x00007f741cccfdc0  phdr: 0x00007f741ccbc040  phnum:                  8
      2746:
      2746:
      2746:     file=libstdc++.so.6 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]
      2746:     file=libstdc++.so.6 [0];  generating link map
      2746:       dynamic: 0x00007f741ccb4d28  base: 0x00007f741c92e000   size: 0x000000000038d020
      2746:         entry: 0x00007f741c9ba3f0  phdr: 0x00007f741c92e040  phnum:                  8
      2746:
      2746:
      2746:     file=libgcc_s.so.1 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]
      2746:     file=libgcc_s.so.1 [0];  generating link map
      2746:       dynamic: 0x00007f741c92cde0  base: 0x00007f741c716000   size: 0x0000000000217430
      2746:         entry: 0x00007f741c718ac0  phdr: 0x00007f741c716040  phnum:                  7
      2746:
      2746:
      2746:     calling init: /lib/x86_64-linux-gnu/libgcc_s.so.1
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libstdc++.so.6
      2746:
      2746:
      2746:     calling init: /opt/intel/opencl/libigdrcl.so
      2746:
      2746:     opening file=/opt/intel/opencl/libigdrcl.so [0]; direct_opencount=1
      2746:
      2746:     /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1: error: symbol lookup error: undefined symbol: clIcdGetPlatformIDsKHR (fatal)
      2746:     opening file= [0]; direct_opencount=6
      2746:
      2746:
      2746:     closing file=; direct_opencount=5
      2746:
      2746:     file=libcuda.so.1 [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=libcuda.so.1 [0];  generating link map
      2746:       dynamic: 0x00007f7416611aa8  base: 0x00007f7415b76000   size: 0x0000000000b9fc98
      2746:         entry: 0x00007f7415c2bc60  phdr: 0x00007f7415b76040  phnum:                  5
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libcuda.so.1
      2746:
      2746:     opening file= [0]; direct_opencount=6
      2746:
      2746:     opening file= [0]; direct_opencount=7
      2746:
      2746:     opening file= [0]; direct_opencount=8
      2746:
      2746:     opening file= [0]; direct_opencount=9
      2746:
      2746:     clinfo: error: symbol lookup error: undefined symbol: pthread_setaffinity_np (fatal)
      2746:
      2746:     closing file=; direct_opencount=8
      2746:     opening file= [0]; direct_opencount=9
      2746:
      2746:     clinfo: error: symbol lookup error: undefined symbol: pthread_getaffinity_np (fatal)
      2746:
      2746:     closing file=; direct_opencount=8
      2746:     opening file= [0]; direct_opencount=9
      2746:
      2746:     opening file=/usr/lib/x86_64-linux-gnu/libcuda.so.1 [0]; direct_opencount=1
      2746:
Number of platforms                               1
  Platform Name                                   NVIDIA CUDA
  Platform Vendor                                 NVIDIA Corporation
  Platform Version                                OpenCL 1.2 CUDA 9.1.84
  Platform Profile                                FULL_PROFILE
  Platform 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_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer
  Platform Extensions function suffix             NV

  Platform Name                                   NVIDIA CUDA
Number of devices                                 1
  Device Name                                     GeForce GTX 1070 Ti
  Device Vendor                                   NVIDIA Corporation
  Device Vendor ID                                0x10de
  Device Version                                  OpenCL 1.2 CUDA
  Driver Version                                  390.48
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Topology (NV)                            PCI-E, 01:00.0
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Max compute units                               19
  Max clock frequency                             1683MHz
  Compute Capability (NV)                         6.1
  Device Partition                                (core)
    Max number of sub-devices                     1
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x64
  Max work group size                             1024
      2746:
      2746:     file=libnvidia-compiler.so.2 [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:
      2746:     file=libnvidia-compiler.so.390.48 [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:     file=libnvidia-compiler.so.390.48 [0];  generating link map
      2746:       dynamic: 0x00007f7401775250  base: 0x00007f73ffc4b000   size: 0x0000000002fb34f0
      2746:         entry: 0x00007f73ffd93a80  phdr: 0x00007f73ffc4b040  phnum:                  5
      2746:
      2746:
      2746:     calling init: /usr/lib/x86_64-linux-gnu/libnvidia-compiler.so.390.48
      2746:
      2746:     opening file=/usr/lib/x86_64-linux-gnu/libnvidia-compiler.so.390.48 [0]; direct_opencount=1
      2746:
  Preferred work group size multiple              32
  Warp size (NV)                                  32
  Preferred / native vector sizes                 
    char                                                 1 / 1       
    short                                                1 / 1       
    int                                                  1 / 1       
    long                                                 1 / 1       
    half                                                 0 / 0        (n/a)
    float                                                1 / 1       
    double                                               1 / 1        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  Yes
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
  Address bits                                    64, Little-Endian
  Global memory size                              8510701568 (7.926GiB)
  Error Correction support                        No
  Max memory allocation                           2127675392 (1.982GiB)
  Unified memory for Host and Device              No
  Integrated memory (NV)                          No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       4096 bits (512 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        311296 (304KiB)
  Global Memory cache line size                   128 bytes
  Image support                                   Yes
    Max number of samplers per kernel             32
    Max size for 1D images from buffer            134217728 pixels
    Max 1D or 2D image array size                 2048 images
    Max 2D image size                             16384x32768 pixels
    Max 3D image size                             16384x16384x16384 pixels
    Max number of read image args                 256
    Max number of write image args                16
  Local memory type                               Local
  Local memory size                               49152 (48KiB)
  Registers per block (NV)                        65536
  Max number of constant args                     9
  Max constant buffer size                        65536 (64KiB)
  Max size of kernel argument                     4352 (4.25KiB)
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    No
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    Kernel execution timeout (NV)                 Yes
  Concurrent copy and kernel execution (NV)       Yes
    Number of async copy engines                  2
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                
  Device 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_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  NVIDIA CUDA
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [NV]
  clCreateContext(NULL, ...) [default]            Success [NV]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  No platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  No platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  Invalid device type for platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  No platform
      2746:     clinfo: error: symbol lookup error: undefined symbol: clSetProgramSpecializationConstant (fatal)

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.2.11
  ICD loader Profile                              OpenCL 2.1
      2746:
      2746:     closing file=; direct_opencount=8
      2746:
      2746:     closing file=; direct_opencount=7
      2746:
      2746:     closing file=; direct_opencount=6
      2746:
      2746:     closing file=; direct_opencount=5
      2746:
      2746:     closing file=; direct_opencount=4
      2746:
      2746:     closing file=; direct_opencount=3
      2746:
      2746:     closing file=; direct_opencount=2
      2746:
      2746:     closing file=; direct_opencount=1
      2746:
      2746:     calling fini: clinfo [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 [0]
      2746:
      2746:
      2746:     calling fini: /opt/intel/opencl/libigdrcl.so [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libstdc++.so.6 [0]
      2746:
      2746:
      2746:     calling fini: /lib/x86_64-linux-gnu/libgcc_s.so.1 [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libcuda.so.1 [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libnvidia-fatbinaryloader.so.390.48 [0]
      2746:
      2746:
      2746:     calling fini: /usr/lib/x86_64-linux-gnu/libnvidia-compiler.so.390.48 [0]
      2746:
      2746:
      2746:     calling fini: /lib/x86_64-linux-gnu/librt.so.1 [0]
      2746:
      2746:
      2746:     calling fini: /lib/x86_64-linux-gnu/libpthread.so.0 [0]
      2746:
      2746:
      2746:     calling fini: /lib/x86_64-linux-gnu/libm.so.6 [0]
      2746:
      2746:
      2746:     calling fini: /lib/x86_64-linux-gnu/libdl.so.2 [0]
      2746:
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$

There are some errors, but these do not seem to be related to /opt/intel/opencl/libigdrcl.so, are they? The errors remain are the same even if I remove intel-opencl-igdrcl .

@ranocha
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Contributor Author

ranocha commented Jun 23, 2018

If I remove nvidia.icd from /etc/OpenCL/vendors/, I get the following result:

hendrik@i7-8700K:/etc/OpenCL$ LD_DEBUG=files clinfo
      3099:
      3099:     WARNING: Unsupported flag value(s) of 0x8000000 in DT_FLAGS_1.
      3099:
      3099:     file=libOpenCL.so.1 [0];  needed by clinfo [0]
      3099:     file=libOpenCL.so.1 [0];  generating link map
      3099:       dynamic: 0x00007f96d2e63cd0  base: 0x00007f96d2c5a000   size: 0x000000000020a050
      3099:         entry: 0x00007f96d2c5e180  phdr: 0x00007f96d2c5a040  phnum:                  8
      3099:
      3099:
      3099:     file=libdl.so.2 [0];  needed by clinfo [0]
      3099:     file=libdl.so.2 [0];  generating link map
      3099:       dynamic: 0x00007f96d2c58d90  base: 0x00007f96d2a56000   size: 0x0000000000203110
      3099:         entry: 0x00007f96d2a56e50  phdr: 0x00007f96d2a56040  phnum:                  7
      3099:
      3099:
      3099:     file=libc.so.6 [0];  needed by clinfo [0]
      3099:     file=libc.so.6 [0];  generating link map
      3099:       dynamic: 0x00007f96d2a4fb80  base: 0x00007f96d2665000   size: 0x00000000003f0ae0
      3099:         entry: 0x00007f96d2686cb0  phdr: 0x00007f96d2665040  phnum:                 10
      3099:
      3099:
      3099:     calling init: /lib/x86_64-linux-gnu/libc.so.6
      3099:
      3099:
      3099:     calling init: /lib/x86_64-linux-gnu/libdl.so.2                  
      3099:                                                                     
      3099:                                                                     
      3099:     calling init: /usr/lib/x86_64-linux-gnu/libOpenCL.so.1          
      3099:                                                                     
      3099:                                                                     
      3099:     initialize program: clinfo                                      
      3099:                                                                     
      3099:                                                                     
      3099:     transferring control: clinfo                                    
      3099:                                                                     
      3099:                                                                     
      3099:     file=/opt/intel/opencl/libigdrcl.so [0];  dynamically loaded by /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 [0]                                    
      3099:     file=/opt/intel/opencl/libigdrcl.so [0];  generating link map   
      3099:       dynamic: 0x00007f96d25fc418  base: 0x00007f96d2231000   size: 0x0000000000433160                                                              
      3099:         entry: 0x00007f96d2244dc0  phdr: 0x00007f96d2231040  phnum:                  8                                                              
      3099:                                                                     
      3099:                                                                     
      3099:     file=libpthread.so.0 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]                                                                         
      3099:     file=libpthread.so.0 [0];  generating link map
      3099:       dynamic: 0x00007f96d222bd68  base: 0x00007f96d2012000   size: 0x000000000021e480
      3099:         entry: 0x00007f96d2018230  phdr: 0x00007f96d2012040  phnum:                  9
      3099:
      3099:
      3099:     file=libstdc++.so.6 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]
      3099:     file=libstdc++.so.6 [0];  generating link map
      3099:       dynamic: 0x00007f96d200ad28  base: 0x00007f96d1c84000   size: 0x000000000038d020
      3099:         entry: 0x00007f96d1d103f0  phdr: 0x00007f96d1c84040  phnum:                  8
      3099:
      3099:
      3099:     file=libm.so.6 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]
      3099:     file=libm.so.6 [0];  generating link map
      3099:       dynamic: 0x00007f96d1c82d90  base: 0x00007f96d18e6000   size: 0x000000000039d158
      3099:         entry: 0x00007f96d18f1a80  phdr: 0x00007f96d18e6040  phnum:                  7
      3099:
      3099:
      3099:     file=libgcc_s.so.1 [0];  needed by /opt/intel/opencl/libigdrcl.so [0]
      3099:     file=libgcc_s.so.1 [0];  generating link map
      3099:       dynamic: 0x00007f96d18e4de0  base: 0x00007f96d16ce000   size: 0x0000000000217430
      3099:         entry: 0x00007f96d16d0ac0  phdr: 0x00007f96d16ce040  phnum:                  7
      3099:
      3099:
      3099:     calling init: /lib/x86_64-linux-gnu/libpthread.so.0
      3099:
      3099:
      3099:     calling init: /lib/x86_64-linux-gnu/libgcc_s.so.1
      3099:
      3099:
      3099:     calling init: /lib/x86_64-linux-gnu/libm.so.6
      3099:
      3099:
      3099:     calling init: /usr/lib/x86_64-linux-gnu/libstdc++.so.6
      3099:
      3099:
      3099:     calling init: /opt/intel/opencl/libigdrcl.so
      3099:
      3099:     opening file=/opt/intel/opencl/libigdrcl.so [0]; direct_opencount=1
      3099:
Number of platforms                               0
      3099:
      3099:     calling fini: clinfo [0]
      3099:
      3099:
      3099:     calling fini: /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 [0]
      3099:
      3099:
      3099:     calling fini: /opt/intel/opencl/libigdrcl.so [0]
      3099:
      3099:
      3099:     calling fini: /lib/x86_64-linux-gnu/libdl.so.2 [0]
      3099:
      3099:
      3099:     calling fini: /lib/x86_64-linux-gnu/libpthread.so.0 [0]
      3099:
      3099:
      3099:     calling fini: /usr/lib/x86_64-linux-gnu/libstdc++.so.6 [0]
      3099:
      3099:
      3099:     calling fini: /lib/x86_64-linux-gnu/libm.so.6 [0]
      3099:
      3099:
      3099:     calling fini: /lib/x86_64-linux-gnu/libgcc_s.so.1 [0]
      3099:
hendrik@i7-8700K:/etc/OpenCL$

@ArturHarasimiuk
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Hi @ranocha,
could you provide some additional data:

ldd -r /opt/intel/opencl/*.so

lspci

dmesg | grep i915
dmesg | grep drm

have you tried running clinfo as root user?

@ranocha
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ranocha commented Jun 23, 2018

Thank you for your help. Running sudo clinfo gives the same results as clinfo. Here are the additional data:

hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ ldd -r /opt/intel/opencl/*.so
/opt/intel/opencl/libiga64.so:
        linux-vdso.so.1 (0x00007ffdc23bb000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f248892a000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f2488712000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f2488321000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f2489097000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f2487f83000)
/opt/intel/opencl/libigc.so:
        linux-vdso.so.1 (0x00007ffc8b5a2000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fd72d69d000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd72d499000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd72d27a000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fd72d05d000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fd72cccf000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd72c931000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fd72c719000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd72c328000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fd72fc9d000)
/opt/intel/opencl/libigdfcl.so:
        linux-vdso.so.1 (0x00007ffc8b1ea000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6cb7a52000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f6cb7833000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f6cb74a5000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f6cb7107000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f6cb6eef000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6cb6afe000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f6cb7f55000)
/opt/intel/opencl/libigdrcl.so:
        linux-vdso.so.1 (0x00007ffdc6b4d000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd33c95d000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd33c73e000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fd33c3b0000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd33c012000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fd33bdfa000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd33ba09000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fd33cf95000)
/opt/intel/opencl/libopencl_clang.so:
        linux-vdso.so.1 (0x00007fff7ebec000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f97bbba4000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f97bb9a0000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f97bb776000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f97bb557000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f97bb33a000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f97baf9c000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f97bac0e000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f97ba9f6000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f97ba605000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f97bf21f000)
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ lspci
00:00.0 Host bridge: Intel Corporation Device 3ec2 (rev 07)
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07)
00:08.0 System peripheral: Intel Corporation Skylake Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation 200 Series PCH USB 3.0 xHCI Controller
00:14.2 Signal processing controller: Intel Corporation 200 Series PCH Thermal Subsystem
00:16.0 Communication controller: Intel Corporation 200 Series PCH CSME HECI #1
00:17.0 SATA controller: Intel Corporation 200 Series PCH SATA controller [AHCI mode]
00:1c.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #1 (rev f0)
00:1c.4 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #5 (rev f0)
00:1c.6 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #7 (rev f0)
00:1d.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #9 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Device a2c9
00:1f.2 Memory controller: Intel Corporation 200 Series PCH PMC
00:1f.3 Audio device: Intel Corporation 200 Series PCH HD Audio
00:1f.4 SMBus: Intel Corporation 200 Series PCH SMBus Controller
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V
01:00.0 VGA compatible controller: NVIDIA Corporation GP104 (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1)
03:00.0 USB controller: ASMedia Technology Inc. Device 2142
04:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01)
05:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a808
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ dmesg | grep i915
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$ dmesg | grep drm
[    1.273350] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[    1.273351] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 0
hendrik@i7-8700K:~/Downloads/intel_compute_runtime/build$

@ArturHarasimiuk
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there is no "00:02.0 VGA compatible controller: Intel Corporation ..." device listed. Most probably device wasn't initialized by BIOS. I think you should inspect BIOS setting and try enabling both integrated and discrete graphics.

@ranocha
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ranocha commented Jun 23, 2018

Thank you very much, @ArturHarasimiuk. I've been silly, I'm very sorry. Now, everything works well. Thank you all very much for your great work and patient help!
Maybe a small note in the setup section might prevent other people from bothering you with such stupid problems...

@ranocha ranocha closed this as completed Jun 23, 2018
@Sec42 Sec42 mentioned this issue Sep 23, 2018
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@alalek @ranocha @ArturHarasimiuk