// returns local memory size in Bytes
unsigned int localMemorySize(cl::Device device) {
	cl_ulong localMemSize;
	device.getInfo<cl_ulong>(CL_DEVICE_LOCAL_MEM_SIZE, &localMemSize);
	return (unsigned int)localMemSize;
}
// returns number of cores (Compute Units), called Streaming MultiProcessors by Nvidia
unsigned int nbrComputeUnits(cl::Device device) {
	cl_uint nbrComputeUnits;
	device.getInfo<cl_uint>(CL_DEVICE_MAX_COMPUTE_UNITS, &nbrComputeUnits);
	return (unsigned int)nbrComputeUnits;
}