Dear PWSCF users, In one of my relax calculations I got the following warning:-
*WARNING: info= 18 for Hessian* I tried to find some thing from previous postings and nothing was available. My system is a strained metal mono layer, which is quite unphysical. It will be really helpful for me if somebody could shed some light in this issue, like why this coming and how grave is this warning for further relaxation steps. Thanking in Advance Manoj N H JNTU India
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