Dear AT Raji, A sample input file will help clarifying the issue.
My guess is that you are dealing with a system with complex potential energy landscape and multiple local minima. If you know that the total magnetization has to be zero and you are using smearing, then try giving small magentization as intial guess (start_magnetization). You can also constrain the total magnetization by tot_magnetization =0. Mostafa AUC, New Cairo, Egypt
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