Dear all,

I have checked the ecut and K point convergence of my primitive cell,

Using this primitive cell I have made a super cell. My super cell

contain 50 atoms and now I want to doped foreign atom in my super cell.

I have also obtained the relax coordinate of doped super cell.

MY QUESTION IS :- Every time when I doped a foreign atom to my super

cell, I have to check ecut and K point convergence or not ?

I am asking this question because convergence checking for super cell

containing 50 atom take very long time.

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