<div dir="ltr">Dear QE community,<div>I am currently facing difficulty in running band structure calculations of a double perovskite with periodic boundary conditions using HSE as a functional. It gets stuck every time after the SCF iteration convergence. There is no update on the output tmp directory either. No XML file generated. NO update in the SCF output and .save directory as well. What could be the problem? I have attached herewith the snapshot of the problem and a copy of the reference input file. Please look into those and let me know what could be done. Please check the input very carefully (pseudopotential choice, parameters—what needs to be improved and facilitated in the calculation?). Please kindly help me out.</div><div><br></div><div>Snap of the inout file:</div><div>....</div><div>&SYSTEM</div>degauss = 0.002<br>ecutwfc = 30<br>ibrav = 0<br>nat = 40<br>ntyp = 5<br>occupations = 'smearing'<br>input_dft = 'hse'<br>exx_fraction = 0.25, ! exact exchange fraction<br>screening_parameter = 0.106 ! HSE06 standard screening (in bohr^-1)<br>nqx1 = 1<br>nqx2 = 1<br>nqx3 = 1<br>x_gamma_extrapolation = .true.,<br>exxdiv_treatment = 'gygi-baldereschi',<br><br>/<br><br>&ELECTRONS<br>electron_maxstep = 300<br>conv_thr = 1e-06<br>mixing_beta = 0.5<br>mixing_mode = 'plain'<br>scf_must_converge = .TRUE.<br>startingwfc = 'random'<br>/<br><br>ATOMIC_SPECIES<br>Cs 132.9054 Cs_ONCV_PBE-1.2.upf<br>Ag 107.868 Ag_ONCV_PBE-1.0.oncvpsp.upf<br>Cu 63.546 Cu_ONCV_PBE_FR-1.0.upf<br>Bi 208.9804 Bi_ONCV_PBE-1.2.upf<br>I 126.9045 I_ONCV_PBE-1.2.upf<br><br>K_POINTS crystal<br>1<br>0.0000000 0.0000000 0.0000000 2.0000000<div>...</div></div>
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