Get the CPU set of logical processors that are physically close to OpenCL device
Return the CPU set describing the locality of the OpenCL device
topology and device
device must match the local machine. I/O devices detection and the OpenCL component are not needed in the topology.
The function only returns the locality of the device. If more information about the device is needed, OS objects should be used instead, see hwloc_opencl_get_device_osdev() and hwloc_opencl_get_device_osdev_by_index().
This function is currently only implemented in a meaningful way for Linux with the AMD OpenCL implementation; other systems will simply get a full cpuset.