Unable to detect OpenCL devices

al4321's Avatar


07 Jan, 2019 01:26 AM


I have a Linux server with 3 OpenCL drivers, running Ubuntu 18.04 x64:

# clinfo
  Platform Name Portable Computing Language
  Platform Vendor The pocl project
  Platform Version OpenCL 1.2 pocl 1.1 None+Asserts, LLVM 6.0.0, SPIR, SLEEF, DISTRO, POCL_DEBUG
  Platform Profile FULL_PROFILE
  Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
  Platform Vendor Intel(R) Corporation
  Platform Version OpenCL 2.1 LINUX
  Platform Profile FULL_PROFILE
  Platform Name NVIDIA CUDA
  Platform Vendor NVIDIA Corporation
  Platform Version OpenCL 1.2 CUDA 10.0.141
  Platform Profile FULL_PROFILE
but for some strange reason, GB4 can see ONLY NVIDIA....

root@gpu-01 ~ # Geekbench-4.3.2-Linux/geekbench4 --compute-list
Geekbench 4.3.2 Pro : http://www.geekbench.com/

0 0 GeForce GTX 1080
2 0 GeForce GTX 1080

What is going on ?
(+I have attached 'clinfo' output from Linux)

Intel OpenCL driver + Linux OpenCL driver (POCL) install commands on Ubuntu 18.04:
apt-get install ocl-icd-dev ocl-icd-libopencl1 libpocl2 clinfo lsb-core
# wget http://registrationcenter-download.intel.com/akdlm/irc_nas/vcp/13793/l_opencl_p_18.1.0.013.tgz
wget https://www.dropbox.com/s/xv33lxtg9rl5x86/OpenCL_Intel_l_opencl_p_18.1.0.013.tgz
tar xvf OpenCL_Intel_l_opencl_p_18.1.0.013.tgz

This configuration is intended for testing and benchmarking, and if it works well, maybe playing some Leela Chess :)

  1. Support Staff 1 Posted by John on 08 Jan, 2019 03:06 PM

    John's Avatar

    Geekbench 4 OpenCL Compute Benchmarks only support GPU devices, and the NVIDIA device is the only GPU device in your system (the POCL and Intel devices are CPU devices).

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