<div dir="ltr">For  the following scf file if I use NC pseudopotential I get-<div>Note: The following floating-point exceptions are signalling: IEEE_DIVIDE_BY_ZERO<br></div><div>However, when I use USPP I don't get the error. Why is this happening?</div><div>code-</div><div>&control<br>    calculation = 'scf'<br>    restart_mode='from_scratch'<br>    prefix = 'si_b'<br>    outdir='./tmp/'<br>    pseudo_dir='../pseudo/'<br>/<br>&system<br>    ibrav=2, celldm(1) =10.410909236, <br>    nat=2, ntyp=1,<br>    ecutwfc=40<br>    ecutrho=160<br>    nbnd=8<br>    noinv=.true.<br>    nosym=.true.<br>    ! occupations='smearing', smearing='gaussian',degauss=0.005<br>/<br>&electrons<br>    conv_thr=1e-8<br>/<br>ATOMIC_SPECIES<br> Si  28.0855  Si.upf<br><br>ATOMIC_POSITIONS (alat)<br> Si 0.00 0.00 0.00<br> Si 0.25 0.25 0.25<br>K_POINTS {automatic}<br>12 12 12 0 0 0<br></div><div><br></div></div>