clGetPlatformIDs fails with the included Fedora 27 ICD

[raunraun]

Using the ICD included in Fedora 27 I get the following error from NEO. Beignet, POCL, and AMDGPU Mesa implements all work fine with this ICD

[raun@localhost test]$ gdb clinfo
GNU gdb (GDB) Fedora 8.0.1-35.fc27

(gdb) r
Starting program: /home/raun/test/clinfo
Missing separate debuginfos, use: dnf debuginfo-install glibc-2.26-24.fc27.x86_64
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
terminate called after throwing an instance of 'cl::Error'
  what():  clGetPlatformIDs

Program received signal SIGABRT, Aborted.
0x00007ffff6c7266b in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: dnf debuginfo-install libgcc-7.2.1-2.fc27.x86_64 libstdc++-7.2.1-2.fc27.x86_64 ocl-icd-2.2.11-4.fc27.x86_64
(gdb) info sharedlibrary
From                To                  Syms Read   Shared Object Library
0x00007ffff7dd5d50  0x00007ffff7df4c50  Yes (*)     /lib64/ld-linux-x86-64.so.2
0x00007ffff7bcf1a0  0x00007ffff7bd26b6  Yes (*)     /lib64/librt.so.1
0x00007ffff787f880  0x00007ffff7928985  Yes (*)     /lib64/libm.so.6
0x00007ffff7674e50  0x00007ffff7675b7e  Yes (*)     /lib64/libdl.so.2
0x00007ffff7458940  0x00007ffff746a848  Yes (*)     /lib64/libOpenCL.so.1
0x00007ffff723fac0  0x00007ffff724fde5  Yes (*)     /lib64/libgcc_s.so.1
0x00007ffff7023b10  0x00007ffff70322d1  Yes (*)     /lib64/libpthread.so.0
0x00007ffff6c5b770  0x00007ffff6dc816c  Yes (*)     /lib64/libc.so.6
0x00007ffff67f7450  0x00007ffff693008a  Yes         /home/raun/workspace/build/bin/libigdrcl.so
0x00007ffff64ea100  0x00007ffff659a7f8  Yes (*)     /lib64/libstdc++.so.6
(*): Shared library is missing debugging information.
(gdb)

clGetPlatformIds is returning -1001. You can see from the gdb log that libigdrcl.so was dynamically loaded by the ICD.

If I build my own ICD from TOT khronos clinfo executes just fine.

[MichalMrozek]

This is known limitation of our current driver.

The driver requires Khronos ICD loader to operate correctly: https://github.com/KhronosGroup/OpenCL-ICD-Loader

We are exploring other solutions to make it more convenient with ICD provided with Linux distributions.

[JacekDanecki]

Can you provide backtrace?
When you set OCL_ICD_ASSUME_ICD_EXTENSION=1 environment variable do you still observe this issue?
Are you using clinfo from this repository: https://github.com/Oblomov/clinfo

[raunraun]

I'm using clinfo from the Fedora 27 repo:

[raun@localhost test]$ dnf search clinfo
Last metadata expiration check: 12 days, 10:27:04 ago on Fri 02 Feb 2018 09:47:42 PM CST.
========================= Name Exactly Matched: clinfo ===================
clinfo.x86_64 : Enumerate OpenCL platforms and devices

...seems to work

[raun@localhost test]$ OCL_ICD_ASSUME_ICD_EXTENSION=1 clinfo
Number of platforms:                             1
  Platform Profile:                              FULL_PROFILE
  Platform Version:                              OpenCL 2.1
  Platform Name:                                 Intel(R) OpenCL HD Graphics
  Platform Vendor:                               Intel(R) Corporation
  Platform Extensions:                           cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_depth_images cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_image2d_from_buffer cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_media_block_io cl_intel_driver_diagnostics cl_intel_device_side_avc_motion_estimation cl_khr_priority_hints cl_khr_subgroups cl_khr_il_program cl_khr_fp64 cl_intel_planar_yuv cl_intel_packed_yuv cl_intel_motion_estimation cl_intel_advanced_motion_estimation


  Platform Name:                                 Intel(R) OpenCL HD Gr......

[raunraun]

Yes, that's the clinfo. I'm using the bin included in Fedora 27

[ArturHarasimiuk]

starting from commit c50054f, the ocl-icd support should work natively, without additional flags.

@raunraun could you please check with version c50054f or newer?

[lissyx]

@ArturHarasimiuk As documented in issue #20, this works for me on Ubuntu 17.10, thanks for fixing that !

[MichalMrozek]

Thanks for checking this, I am closing this issue.
@raunraun feel free to reopen if problem is still visible.

[TaihuLight]

@ArturHarasimiuk @MichalMrozek @JacekDanecki When I install NEO driver, I can not find ICD loader library 'libOpenCL.so' in my install directory of NEO, and NEO document says that link to it.
How to generate libOpenCL.so for NEO 18.48.11934 driver on Ubuntu 16.04.5?

[alalek]

@TaihuLight Try to use libOpenCL.so from the system directly.

Fedora package:

dnf install ocl-icd

Ubuntu package:

apt install ocl-icd-libopencl1

If provided version is not enough to you then try to build Khronos ICD loader from the Khronos repository (it may conflicts with system ones). The link is above.