OpenCL context does not get created

asked 2018-07-16 19:07:27 -0500

drcurry gravatar image

updated 2018-07-16 20:53:53 -0500

Don't really know how to word it, but long story short, I have built OpenCV from source cv::getBuildInformation() says that OpenCL is indeed installed. I have an GTX 1050, CV is also compiled with CUDA. Ubuntu 16.04. I have the same code on my work computer (has i7-4610m and AMD 8960m) CV is built from source with OpenCL and it gives me the info

Code used:

#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/core/ocl.hpp>


int main(int argc, char **argv)
{
  cv::ocl::setUseOpenCL(true);
  cv::setUseOptimized(true);
  std::cout << cv::getBuildInformation() << std::endl;
  if (cv::useOptimized())
  {
     std::cout << "using optimized" << std::endl;
  }

  if (!cv::ocl::haveOpenCL())
  {
     std::cout << "no opencl" << std::endl;
  }

  cv::ocl::Context context;
  if (!context.create(cv::ocl::Device::TYPE_GPU)) //I've tried all of the TYPE_ they all do the same thing
  {
     std::cout << "failed to create" << std::endl;
  }
  std::cout << context.ndevices() << " GPU devices are detected." << std::endl;
  std::cout << "++++++++++++++" << std::endl;
  for (size_t i = 0; i < context.ndevices(); i++)
  {
     cv::ocl::Device device = context.device(i);
     std::cout << "name: " << device.name() << std::endl;
     std::cout << "available: " << device.available() << std::endl;
     std::cout << "img support: " << device.imageSupport() << std::endl;
     std::cout << "cl v: " << device.OpenCL_C_Version() << std::endl;
  }
  std::cout << "++++++++++++++" << std::endl;
  std::cout << "==============" << std::endl;
  cv::ocl::Device d = cv::ocl::Device::getDefault();
  std::cout << d.OpenCLVersion();
  std::cout << "==============" << std::endl;
}

Output of everything (not buildinfo):

using optimized
no opencl
failed to create
0 GPU devices are detected.
++++++++++++++
++++++++++++++
==============
==============

Let me know if you need more information Thanks in advance

edit1: Build info

General configuration for OpenCV 3.4.2-dev =====================================
Version control:               unknown

Platform:
  Timestamp:                   2018-07-15T17:34:22Z
  Host:                        Linux 4.13.0-45-generic x86_64
  CMake:                       3.11.4
  CMake generator:             Unix Makefiles
  CMake build tool:            /usr/bin/make
  Configuration:               Release

CPU/HW features:
  Baseline:                    SSE SSE2 SSE3
    requested:                 SSE3
  Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
    requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
    SSE4_1 (3 files):          + SSSE3 SSE4_1
    SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
    FP16 (2 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
    AVX (4 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
    AVX2 (8 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
    AVX512_SKX (0 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_SKX

C/C++:
  Built as dynamic libs?:      YES
  C++11:                       YES
  C++ Compiler:                /usr/bin/c++  (ver 5.4.0)
  C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden   -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
  C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security ...
(more)
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