title: Can i assume that local id is equal to global id for the first workgroup in OpenCL on all platforms
body: <p>Can i assume that <code>get_local_id(0)</code> is equal to <code>get_global_id(0)</code> for the first work group in OpenCL on all hardware/platforms?</p>
  
  <p>The question is about, if every work-item spawned are given id <code>0,1,2,3,4,5,6,7</code> in global space and then <code>0,1,2,3 | 0,1,2,3</code> in local space.</p>
  
  <p>Alternative it could be local space, <code>0,2,4,6 | 1,3,5,7</code>. where | splits the two workgroups in this example of two workgroups and 8 work items.</p>