<div dir="ltr">Hi, Everyone,<div><br></div><div style>I get this error in my nscf calculation:</div><div style><br></div><div style><div> from cdiaghg : error # 99</div><div>1069 diagonalization (ZHEGV*) failed .</div>
<div><br></div><div style>I am basically running a TiO2 bulk calculation. The scf calculation runs fine. But I get the above error in the nscf calculation. The only difference in the nscf calculation is that I increase the number of bands to 100. </div>
<div style><br></div><div style>Here is the input file for the scf calculation:</div><div style><br></div><div style><div> &control</div><div> prefix='Rutile',</div><div> pseudo_dir='/scratch/scratchdirs/kopinjol/Calculations/Projects/TiO2/TiO 2/Rutile/Yambo',</div>
<div> outdir='/scratch/scratchdirs/kopinjol/Calculations/Projects/TiO2/TiO2/Ru tile/Yambo/SAVE',</div><div> /</div><div> &system</div><div> ibrav=6, celldm(1)=8.674, celldm(3)=0.645, nat=6, ntyp=2,</div>
<div> ecutwfc = 50.0,</div><div> occupations='fixed',</div><div> nspin=1, nbnd=20,</div><div> force_symmorphic=.true.,</div><div> nosym=.false.,</div><div> /</div><div> &electrons</div>
<div> diago_full_acc = .true.,</div><div> diago_thr_init = 1.0d-6,</div><div> diagonalization='cg',</div><div> /</div><div> ATOMIC_SPECIES</div><div> Ti 47.867 Ti.UPF</div><div> O 15.99 O.UPF</div>
<div> ATOMIC_POSITIONS bohr</div><div> Ti 0.00000000 0.00000000 0.00000000</div><div> Ti 6.13831976 0.00000000 2.79501944</div><div> O -2.38657872 0.00000000 2.79501944</div><div> O 2.38657872 0.00000000 2.79501944</div>
<div> O 6.13831976 -2.38657872 0.00000000</div><div> O 6.13831976 2.38657872 0.00000000</div><div> </div><div> K_POINTS automatic</div><div> 8 8 8 0 0 0 </div><div><br></div><div><br></div><div>
<br></div><div style>And here is the input file for the nscf calculation:</div><div style><br></div><div style><br></div><div style><div> &control</div><div> calculation='nscf'</div><div> prefix='Rutile',</div>
<div> pseudo_dir='/scratch/scratchdirs/kopinjol/Calculations/Projects/TiO2/TiO 2/Rutile/Yambo',</div><div> outdir='/scratch/scratchdirs/kopinjol/Calculations/Projects/TiO2/TiO2/Ru tile/Yambo/SAVE',</div>
<div> wf_collect=.true.,</div><div> verbosity='high',</div><div> /</div><div> &system</div><div> ibrav=6, celldm(1)=8.674, celldm(3)=0.645, nat=6, ntyp=2,</div><div> ecutwfc = 50.0,</div>
<div> occupations='fixed',</div><div> nspin=1, nbnd=100,</div><div> force_symmorphic=.true.,</div><div> nosym=.false.,</div><div> /</div><div> &electrons</div><div> diago_full_acc = .true.,</div>
<div> diago_thr_init = 1.0d-4,</div><div> diagonalization='cg',</div><div> /</div><div> ATOMIC_SPECIES</div><div> Ti 47.867 Ti.UPF</div><div> O 15.99 O.UPF</div><div> ATOMIC_POSITIONS bohr</div>
<div> Ti 0.00000000 0.00000000 0.00000000</div><div> Ti 6.13831976 0.00000000 2.79501944</div><div> O -2.38657872 0.00000000 2.79501944</div><div> O 2.38657872 0.00000000 2.79501944</div>
<div> O 6.13831976 -2.38657872 0.00000000</div><div> O 6.13831976 2.38657872 0.00000000</div><div> K_POINTS automatic</div><div> 8 8 8 0 0 0</div><div><br></div><div><br></div><div><br></div>
<div style>I would really appreciate any help. </div><div style><br></div><div style>Thanks in advance,</div><div style>Kopinjol Baishya</div><div style>Graduate Student,</div><div style>Materials Modelling Group,</div><div style>
Deptt. of Physics,</div><div style>University of Illinois,</div><div style>Chicago,</div><div style>IL 60607</div></div></div></div></div>