[Pw_forum] the dynmaical matrix are like "***********" when the phonons calculation at gama

Paolo Giannozzi giannozz at democritos.it
Tue Mar 3 14:37:08 CET 2009

xu yuehua wrote:

>      kpoint   1 ibnd  33 solve_e: root not converged  NaN

"NaN" doesn't mean "Sodium Nitride" here but "Not a Number".
There is something seriously wrong going on here and it is
completely useless to go on

Paolo Giannozzi, Democritos and University of Udine, Italy

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