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_byte_addressable_store cl_khr_3d_image_writes cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_spir cl_khr_icd cl_intel_accelerator cl_intel_subgroups cl_intel_subgroups_short Running clinfo gives this output on my laptop:

Sudo apt-get install beignet-opencl-icd ocl-icd-libopencl1 clinfo To confirm that you have a working installation, install clinfo To get a working installation of OpenCL, simply install the debian packages beignet-opencl-icd and ocl-icd-libopencl1. The documentation google gives about 'opencl debian intel' is outdated, in particular 'OpenCLHowTo - Andreas Klöckner's wiki' incorrectly states that 'the Intel CPU ICD is not packaged. Installing OpenCL for an Intel GPU on Debian Lastly, moving data to an from the GPU is slow, so ideally, all computations is done entirely on the GPU and only the results should be read back to the CPU. On my computer, a laptop with 8 GB of RAM, I have the following memory related limits: In addition to the limitation of dependent 'cores', the RAM available to these cores is limited. So, if you have a lot of matrices or vectors to add or multiply, then OpenCL is for you. All sorts of computations on matrices can be executed in parallel, but most parts of an 'ordinary' program can not. However, the 'cores' in the GPU are not fullly fledged independent processing units, each core can only execute the same instruction as the other cores. Modern GPUs have many more 'cores' than modern CPU:s, so the main advantage of OpenCL is that computations that can be parallelised can be executed much faster. OpenCL is a language that enables computation being executed on graphics processing unit, GPU, as well as on the central processing unit CPU, and it was invented by Apple in 2008.

OpenCL on IntelHD on Debian OpenCL on IntelHD on Debian About OpenCL

Install intel graphics driver in debian