Reputation: 1426
What drivers/packages do I have to install in order to enable OpenCL over multiple platforms: CPU (Intel), Integrated GPU (Intel), Dedicated GPU (NVIDIA)?
It would be nice to have all platforms running OpenCL 1.2 or above
I know it is probably a simple fix, maybe just the right selection of libraries/SKDs, but I am having some trouble getting more them one platform to work.
Running ubuntu 14.04: I have a intel core I5 with the integrated intel graphics and a dedicated NVIDIA Geforce 710m board.
https://wiki.tiker.net/OpenCLHowTo
Here (under Debian) it tells me that I only need:
sudo apt-get install nvidia-331 nvidia-331-uvm nvidia-opencl-dev nvidia-modprobe
sudo ln -s /usr/include/nvidia-352/GL /usr/local/include
sudo ln -s /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 /usr/local/lib/libOpenCL.so
Installed Intel opencl_runtime_14.2_x64_4.5.0.8.tgz
Created a simbolic link to intel ICD with:
sudo ln -s /opt/intel/opencl-1.2-4.5.0.8/etc/intel64.icd
OpenCL 1.2 worked for CPU (and still works)
Installed clinfo sudo apt-get install clinfo
ICD in Vendors?
ls -l /etc/OpenCL/vendors/
total 4
-rw-r--r-- 1 root root 15 Out 22 2015 Altera.icd
lrwxrwxrwx 1 root root 45 Abr 28 13:48 intel64.icd -> /opt/intel/opencl-1.2-4.5.0.8/etc/intel64.icd
Note the missing nvidia.icd
CL and GL - GL had a valid link... now is IN RED
ls -l /usr/local/include
total 4
lrwxrwxrwx 1 root root 31 Abr 28 12:48 CL -> /usr/local/cuda-7.5/include/CL/
lrwxrwxrwx 1 root root 26 Abr 27 11:44 GL -> /usr/include/nvidia-352/GL (IN RED COLOR - folder doesn't exist anymore)
.so Files
ls -l /usr/local/lib/ | grep CL
lrwxrwxrwx 1 root root 40 Abr 27 11:45 libOpenCL.so -> /usr/lib/x86_64-linux-gnu/libOpenCL.so.1
Installed packages
dpkg --get-selections | grep nvidia
nvidia-340 deinstall
nvidia-352 install
nvidia-libopencl1-340 deinstall
nvidia-libopencl1-340-updates deinstall
nvidia-libopencl1-352 deinstall
nvidia-libopencl1-352-updates install
nvidia-modprobe install
nvidia-opencl-icd-340 deinstall
nvidia-opencl-icd-352 deinstall
nvidia-prime install
nvidia-settings install
dpkg --get-selections | grep opencl
nvidia-libopencl1-340 deinstall
nvidia-libopencl1-340-updates deinstall
nvidia-libopencl1-352 deinstall
nvidia-libopencl1-352-updates install
nvidia-opencl-icd-340 deinstall
nvidia-opencl-icd-352 deinstall
ocl-icd-libopencl1:amd64 deinstall
ocl-icd-libopencl1:i386 deinstall
opencl-headers install
unity-scope-openclipart install
clinfo
clinfo
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 LINUX
Platform Name: Intel(R) OpenCL
Platform Vendor: Intel(R) Corporation
Platform Extensions: cl_khr_icd 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_spir cl_intel_exec_by_local_thread cl_khr_depth_images cl_khr_3d_image_writes cl_khr_fp64
Platform Name: Intel(R) OpenCL
Number of devices: 1
Device Type: CL_DEVICE_TYPE_CPU
Device ID: 32902
Max compute units: 4
Max work items dimensions: 3
Max work items[0]: 8192
Max work items[1]: 8192
Max work items[2]: 8192
Max work group size: 8192
Preferred vector width char: 1
Preferred vector width short: 1
Preferred vector width int: 1
Preferred vector width long: 1
Preferred vector width float: 1
Preferred vector width double: 1
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 8
Native vector width double: 4
Max clock frequency: 1800Mhz
Address bits: 64
Max memory allocation: 2040185856
Image support: Yes
Max number of images read arguments: 480
Max number of images write arguments: 480
Max image 2D width: 16384
Max image 2D height: 16384
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 480
Max size of kernel argument: 3840
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: Yes
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: No
Round to +ve and infinity: No
IEEE754-2008 fused multiply-add: No
Cache type: Read/Write
Cache line size: 64
Cache size: 262144
Global memory size: 8160743424
Constant buffer size: 131072
Max number of constant args: 480
Local memory type: Global
Local memory size: 32768
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 1
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: Yes
Queue properties:
Out-of-Order: Yes
Profiling : Yes
Platform ID: 0x1659390
Name: Intel(R) Core(TM) i5-3337U CPU @ 1.80GHz
Vendor: Intel(R) Corporation
Device OpenCL C version: OpenCL C 1.2
Driver version: 1.2.0.8
Profile: FULL_PROFILE
Version: OpenCL 1.2 (Build 8)
Extensions: cl_khr_icd 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_spir cl_intel_exec_by_local_thread cl_khr_depth_images cl_khr_3d_image_writes cl_khr_fp64
How can I get NVIDIA gpu to also show up as a OPENCL 1.2 (or higher) platform? How about the integrated intel graphics?
Would AMD libraries work with my hardware?
Why most of the nvidia packages are marked as deinstall
?
Upvotes: 4
Views: 11908
Reputation: 1426
As mentioned before, three things are necessary:
From https://wiki.tiker.net/OpenCLHowTo
Thus for an Intel CPU and a NVIDIA GPU
However, to get it to work, it is necessary to make sure the packages are marked as install by dpkg --get-selections | grep opencl
sudo apt-get install --reinstall nvidia-opencl-icd-352 opencl-headers ocl-icd-libopencl1
On top of that, you must make sure that intel64.icd and nvidia.icd are in /etc/OpenCL/vendors
(ls -l /etc/OpenCL/vendors
).
That said, I had to link intel64.icd with:
cd /etc/OpenCL/vendors/
sudo ln -s /opt/intel/opencl-1.2-X.X.X.X/etc/intel64.icd
And, since nvidia.icd was not in the folder (even after the installation of the right package) I had to extract it and manually move from the deb package
dpkg -x /var/cache/apt/archives/nvidia-opencl-icd-352_352.63-0ubuntu0.14.04.1_amd64.deb ~/tempfolder
sudo mv ~/tempfolder/etc/OpenCL/vendors/nvidia.icd /etc/OpenCL/vendors/nvidia.icd
rm -r ~/tempfolder
Finally, make sure nvidia is the active GPU
sudo prime-select nvidia
sudo reboot -r now
Install and execute clinfo and both platforms should show-up.
clinfo
Number of platforms: 2
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 CUDA 7.5.23
Platform Name: NVIDIA CUDA
Platform Vendor: NVIDIA Corporation
Platform Extensions: cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 LINUX
Platform Name: Intel(R) OpenCL
Platform Vendor: Intel(R) Corporation
Platform Extensions: cl_khr_icd 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_spir cl_intel_exec_by_local_thread cl_khr_depth_images cl_khr_3d_image_writes cl_khr_fp64
Upvotes: 1