For mBJ it is ALWAYS a good idea to use a larger IFFTfactor (complete cycle).

For a surface, case.in0_grr should not be present.

However, you need a file case.grr (normally prepared when case.in0_grr is present). This file (or the corresponding avrg [(grad rho)/rho] value) should be taken from a corresponding bulk calculation.

On 10/18/2013 12:37 PM, alpa dashora wrote:
Dear Prof. Blaha,

Thanks for reply. I am unable to understand the reply. In only one
iteration FFT factor should be 4 or for complete mbj cycle it should be
same or again changed to 2.

Should I remove case.in0_grr file?

Please clear it.
  With regards,



On Fri, Oct 18, 2013 at 11:30 AM, Peter Blaha
<pbl...@theochem.tuwien.ac.at <mailto:pbl...@theochem.tuwien.ac.at>> wrote:

    Switch to PBE for one iteration.
    Increase  IFFTfactor from 2 to 4 in case.in0 (and, most likely,
    reduce RKMAX)

    Am 18.10.2013 05:55, schrieb alpa dashora:

        Dear Prof. Blaha and Wien2k users,

        I am trying to run mbj calculation for MoS2 10 layer slab. After
        few cycles lapw0 hanged. I have seen the earlier posts discussed
        on the same topics. I have used the
        vxclm2.f file as provided by Prof. Blaha and removed
        case.in0_grr file. I have also increased the Rmt*Kmax up to 9
        but still I am not able to solve my problem.

        Please suggest any other solution for this error or any other
        method to calculate the correct band gap.

        Thanks in advance.

        With kind regards,

        --
        Alpa Dashora


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--
Alpa Dashora


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