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IBRION=-1

No update; ions are not moved, but NSW outer loops are performed. In each outer loop the electronic degrees of freedom are re-optimized (for NSW$ >$0 this obviously does not make much sense, except for test purposes). If no ionic update is required use NSW=0 instead.



N.B. Requests for support are to be addressed to: vasp.materialphysik@univie.ac.at