[Pw_forum] A simple question about convergence testing

[Lijun Zhang]

Dear all,
  As far as known, it is very important to determine a good basis set size and k-mesh before doing lengthy calculations.
  Then,how to do these convergence testing? The total energy of the system is the only parameter to be evaluated? If it is, what is the criterion of the convergency?
  Any help will be appreciated.
  Best regards


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Lijun Zhang 
National Lab of Superhard Materials, Jilin University, Changchun 130012, China
		
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