<div dir="ltr"><div>Dear Quantum espresso users,<br><br></div>I am not able to run the example code using cp. I am getting the error ' Error in routine tqli (200): too many iterations". I tried reducing the maxiter from 200 to 100 but I still get the same error. Also I changed the time-step but it is no use. The input script I am using is <br>
<br>&CONTROL<br> calculation = 'cp',<br> restart_mode = 'from_scratch',<br> nstep = 5,<br> iprint = 10,<br> isave = 10,<br> tstress = .TRUE.,<br> tprnfor = .TRUE.,<br> dt = 1.0d0,<br> prefix = 'Si_dimer',<br>
pseudo_dir = '/home/ras256us/calc/pspot',<br> outdir = '/home/ras256us/calc/pspot/temp',<br>/<br>&SYSTEM<br> ibrav = 8,<br> celldm(1) = 10.,<br> celldm(2) = 1.0,<br> celldm(3) = 1.5,<br> celldm(4) = 0.0,<br>
celldm(5) = 0.0,<br> celldm(6) = 0.0,<br> nbnd=8,<br> nat =2,<br> ntyp =1,<br> ecutwfc = 15,<br> ecutrho = 60,<br> nr1b=20,nr2b=20,nr3b=20<br> occupations = 'ensemble',<br> smearing='fd',<br> degauss=0.025,<br>
nspin=1,<br>/<br>&ELECTRONS<br> emass = 1000.d0,<br> emass_cutoff = 4.d0,<br> orthogonalization = 'Gram-Schmidt',<br> startingwfc = 'random',<br> ampre = 0.02,<br> n_inner = 8,<br> tcg = .true.,<br>
passop=0.3,<br> maxiter = 100,<br> conv_thr=1.d-6<br>/<br>&IONS<br> ion_dynamics = 'damp',<br> ion_damping = 0.,<br> ion_positions = 'from_input',<br> greasp=1.0,<br> ion_radius(1) = 0.8d0,<br>
ion_temperature = 'not_controlled',<br>/<br>ATOMIC_SPECIES<br> Si 28.086 Si.pbe-rrkj.UPF<br>ATOMIC_POSITIONS (bohr)<br>Si 0. 0. 0. 1 1 1<br>Si 0. 0. 5.5 1 1 1<br><div><div><br>-- <br>Thanks<div>Ravi</div>
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