Why a relaxed structure doesn't converge in static run

Queries about input and output files, running specific calculations, etc.


Moderators: Global Moderator, Moderator

Post Reply
Message
Author
User avatar
SKM
Full Member
Full Member
Posts: 125
Joined: Wed Oct 30, 2019 5:39 am
License Nr.: 5-516

Why a relaxed structure doesn't converge in static run

#1 Post by SKM » Mon Dec 06, 2021 1:53 pm

hi
many a times i have faced the situation that after relaxing a structure and use the CONTCAR for a subsequent static run, why it poses converging issues? it some times need very high NELM value to get converge, or some times, even very high NELM it doesnt converge.
any probable reason?
Is there a situation we can consider the relaxed structure energy safely without running a static run?

Regards
Regards
SKM

henrique_miranda
Global Moderator
Global Moderator
Posts: 502
Joined: Mon Nov 04, 2019 12:41 pm
Contact:

Re: Why a relaxed structure doesn't converge in static run

#2 Post by henrique_miranda » Fri Dec 10, 2021 3:17 pm

There are many reasons why this might happen.
I don't want to give a very general answer that might not apply to your (or another user's case).
Could you please share INCAR, KPOINTS, POSCAR, OUTCAR and OSZICAR for the example you have in mind?

Post Reply