Opencl implementation decide Work-group size

Discussion created by Valmass on Dec 19, 2010
Latest reply on Dec 20, 2010 by himanshu.gautam



The opencl specification writes :

local_work_size can also be a NULL value in which case the OpenCL implementation will determine how to be break the global work-items into appropriate work-group instances.

How Opencl implementation can decide the work group size if  local_work_size is a NULL value?

Thanks in advance