# OpenCL Demo

A toy program from 
https://bbs.archlinux.org/viewtopic.php?id=254491

that I saved in the directory `./opencl-demo` and that you can build with `make`

```
cd ../opencl-demo
make
```

## Installing `opencl-headers`

https://stackoverflow.com/a/45880123

Because it can't find `CL/CL.h` at first.
```
sudo apt install opencl-headers
```

## Installable Client Driver (ICD)

Finally I find out what this technology is.
It appears to let you compile against OpenCL
libraries in a platform-independent way
(the same compiled binary would run on Intel / AMD / Nvidia)

https://stackoverflow.com/a/17456374

I can find the vendor definitions in
`/etc/OpenCL/vendors/`