<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:12pt"><div class="msg-body inner  undoreset" role="main" aria-label="Corps du message" style=""><div id="yiv1613025291"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: Courier New,courier,monaco,monospace,sans-serif; font-size: 12pt;"><div>Dear all <br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;">i try do relax atomic positions with constant volume for FeRh non magnetic compound, <br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;">my input file:</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier
 New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;">##################################</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"> &control<br>    calculation = 'vc-relax',<br>    restart_mode='from_scratch',<br>    prefix='FeRh',<br>    pseudo_dir = '../',<br>    outdir='../'<br>    forc_conv_thr=1.0D-4,<br>  /<br> &system<br>    ibrav=0,<br>    celldm(1) =5.45,<br>    nat=  2, ntyp= 2,<br>    ecutwfc=20,<br>    occupations='smearing',<br>    smearing='mv',<br>    degauss=0.02,<br>  /<br> &ions<br>    ion_dynamics='bfgs',<br> 
 /<br> &CELL<br>    cell_dynamics='bfgs',<br>    cell_dofree='shape',<br>  /<br> &electrons<br>    mixing_mode = 'plain' ,<br>    mixing_beta = 0.5,<br>    diagonalization = 'david'
 ,<br>    conv_thr = 1.0d-7,<br>    electron_maxstep=1000,<br>  /<br>CELL_PARAMETERS {cubic}<br>    1.000000    0.000000    0.000000<br>    0.000000    1.000000    0.000000<br>    0.000000    0.000000    1.000000<br>ATOMIC_SPECIES<br>    Fe 55.85    Fe.pz-nd-rrkjus.UPF<br>    Rh 102.91   Rh.pz-rrkjus.UPF<br>ATOMIC_POSITIONS {crystal}<br>    Fe      0.00000000  0.00000000  0.00000000<br>    Rh      0.50000000  0.50000000  0.50000000<br>K_POINTS {automatic}<br>    10 10 10 1 <br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color:
 transparent; font-style: normal;">##################################</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;">i get this error</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>     from  read_namelists  : error #         1<br>      reading namelist ions<br> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br></div><div
 style="color: rgb(0, 0, 0); font-size: 16px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 18px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;">thinks<br></div><pre>--------------------------------<br>Sakhraoui Taoufik<br>Ph.D student <br>Faculty of Sciences of Monastir<br>Department of Physics<br>L.M.C.N<br>Monastir, Tunisia<br>--------------------------------</pre></div></div></div>     </div></div></body></html>