OpenCL On ubuntu 16.04, Intel Sandy Bridge CPU

Question

Is it possible to install openCL on 16.04 (CPU-Only)? I tried many guides, but still do not get a working box. I have a sandy-bridge second gen CPU, if this matters.

Answer 1

install packets

Generic ubuntu packages for OpenCL

Basic installation sudo apt install ocl-icd-libopencl1 sudo apt install opencl-headers sudo apt install clinfo

Package that allows to compile OpenCL code (1.2 I think)

Needed to link and compile sudo apt install ocl-icd-opencl-dev

For Intel GT core

Package that enables runnig openCL on Intel GT, IvyBridge and up

sudo apt install beignet

For SandyBridge Intel CPU and possible others

Download this file OpenCL™ Runtime 16.1.1 for Intel® Core™ and Intel® Xeon® Processors for Ubuntu* (64-bit) On https://software.intel.com/en-us/articles/opencl-drivers#latest_linux_SDK_release

Install packages for turning rpm to deb sudo apt-get install -y rpm alien libnuma1

Untar downloaded file tar -xvf opencl_runtime_16.1.1_x64_ubuntu_6.4.0.25.tgz cd opencl_runtime_16.1.1_x64_ubuntu_6.4.0.25/rpm/ Turn rpm files to deb fakeroot alien --to-deb opencl-1.2-base-6.4.0.25-1.x86_64.rpm fakeroot alien --to-deb opencl-1.2-intel-cpu-6.4.0.25-1.x86_64.rpm Install .deb packages sudo dpkg -i opencl-1.2-base_6.4.0.25-2_amd64.deb sudo dpkg -i opencl-1.2-intel-cpu_6.4.0.25-2_amd64.deb Touch local config file sudo touch /etc/ld.so.conf.d/intelOpenCL.conf Open the file sudo vim /etc/ld.so.conf.d/intelOpenCL.conf and add the line

/opt/intel/opencl-1.2-6.4.0.25/lib64/clinfo

Create a vendors dir and add intel.icd sudo mkdir -p /etc/OpenCL/vendors sudo ln /opt/intel/opencl-1.2-6.4.0.25/etc/intel64.icd /etc/OpenCL/vendors/intel64.icd sudo ldconfig

test if this worked

Command to list your devices clinfo

Dowload this file

https://codeload.github.com/hpc12/tools/tar.gz/master

Run this code to make sure everything works tar xzvf tools-master.tar.gz cd tools-master make ./print-devices ./cl-demo 1000 10 This should print out GOOD in the end

For Nvidia

install nvidia drivers (I used 370), this should include all the runtime dirvers

Usefull linkes I have used to put this together

https://wiki.tiker.net/OpenCLHowTo http://korniychuk.org.ua/instruction/how-to-use-opencl-on-ubuntu-16-04/ https://laanwj.github.io/2016/05/06/opencl-ubuntu1604.html https://software.intel.com/en-us/articles/opencl-drivers#latest_linux_SDK_release https://software.intel.com/en-us/forums/opencl/topic/285869 https://streamcomputing.eu/blog/2011-06-24/install-opencl-on-debianubuntu-orderly/ https://software.intel.com/en-us/forums/opencl/topic/390630 https://stackoverflow.com/questions/16977216/opencl-compile-on-linux

Answer 2

As per Intel's support site, OpenCL is not supported on 2nd gen (Sandy Bridge) Core processors.

You will need a 3rd gen (Ivy Bridge) or newer CPU to use OpenCL 1.2, or a 7th gen (Kaby Lake) to have the option to use OpenCL 2.0 with the Intel GPU (I am not sure what is currently supported in the drivers available for Linux).