Hi everyone,

I am a little bit confused about how to choose values for the 
'PolarizationGrids' block. Specifically, I have three questions:

1. The manual says that each row of the block determines the grid for a 
particular lattice vector, but does that refer to the vector in real space or 
k-space? That is, should the longest or shortest unit cell vector have the most 
points?

2. Is the mesh used to calculate the polarization a somewhat convergent 
parameter?

3. Related to the previous question, how does the computational cost of the 
polarization calculation scale with the mesh size specified using the 
'PolarizationGrids' block?


Thanks very much for any information or suggestions you can share, have a nice 
day,



Mike

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