title: CUDA 2D, 3D thread blocks
body: <p>According to <a href="http://en.wikipedia.org/wiki/CUDA" rel="nofollow">http://en.wikipedia.org/wiki/CUDA</a>, 
  Maximum x- or y-dimension of a block 1024
  Maximum z-dimension of a block 64</p>
  
  <p>Does it mean we can have 1024 x 1024 x 64 threads per block or we can have a maximum of 1024+64 threads in a block?</p>