vexcl

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Hi,

I saw in tests/svm.cpp

#if defined(CL_VERSION_2_0) || defined(VEXCL_BACKEND_CUDA)

I'm wondering where to get the CL_VERSION_2_0 dev files installed for Nvidia on Ubuntu 16.04?

Thanks.

============ $ grep -rIli CL_VERSION_2 /usr/local/cuda-*

shows nothing.

$ ls -lartd /usr/local/cuda-* drwxr-xr-x 14 root root 4096 Mar 30 2017 /usr/local/cuda-8.0 drwxr-xr-x 11 root root 4096 Jun 11 2017 /usr/local/cuda-7.5 drwxr-xr-x 15 root root 4096 Jan 31 00:43 /usr/local/cuda-9.1

looks like only 1.x is there.

$ grep -rIi CL_VERSION_1 /usr/local/cuda-* | grep -w define /usr/local/cuda-7.5/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_0 1 /usr/local/cuda-7.5/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_1 1 /usr/local/cuda-7.5/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_2 1 /usr/local/cuda-8.0/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_0 1 /usr/local/cuda-8.0/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_1 1 /usr/local/cuda-8.0/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_2 1 /usr/local/cuda-9.1/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_0 1 /usr/local/cuda-9.1/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_1 1 /usr/local/cuda-9.1/targets/x86_64-linux/include/CL/cl.h:#define CL_VERSION_1_2 1

The test you mentioned is defined either for OpenCL 2.0 or the CUDA backend. I don't think NVIDIA supports OpenCL 2.0.

I can find the news, but not the dev files:

https://streamhpc.com/blog/2017-02-22/nvidia-enables-opencl-2-0-beta-support/

is it this one ?

https://github.com/NVIDIA/nvidia-docker/issues/17 We just published the OpenCL images on DockerHub (finally!).

https://hub.docker.com/r/nvidia/opencl/

looks like it is defined:

root@91dbfd615000:~# grep CL_VERSION_ /usr/include/CL/* | grep -w define /usr/include/CL/cl.h:#define CL_VERSION_1_0 1 /usr/include/CL/cl.h:#define CL_VERSION_1_1 1 /usr/include/CL/cl.h:#define CL_VERSION_1_2 1 /usr/include/CL/cl.h:#define CL_VERSION_2_0 1

On the latest NVidia drivers, 1.2 is the highest level officially supported. They've been adding bits of 2.0 support as developer previews for a year or so now as technical previews, but nothing official. (See the section: Experimental OpenCL 2.0, "Select features in OpenCL 2.0 are available in the driver for evaluation purposes only.")