[Wien] k-mesh for CNTs

[taiiebeh molarooy]

Dear wien users,
  Hi, For run scf of CNTs how should we select k-mesh? should we always select 1 k-mesh in b and c directions? why?
  How many k-points should be used? do number of k-point must be low? why?
  
  
  
  Best regards,

       
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