Dear PWSCF users,
I have done some structure optimization calculations using ecutwfc=25,
ecutrho=200 and mixing_ndim = 16 successfully. But when I increase the
parameters ecutwfc=30 and ecut=240 and mixing_ndim=8, I got a lot of "c_bands:
10 eigenvalues not converged" warnings, even "too many bands are not converged"
errors.
I searched the old pw_forum articles and find little things about this.
so I want to know the change of which parameters lead to this problem?
hoping your kindly reply.
all best
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2009-03-17
