<div dir="ltr">Hello,<div>I am following a tutorial and the following code was given there-</div><div><p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">  &control</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    calculation = 'vc-relax'</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    prefix = 'Si_exc2'</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    outdir = './tmp/'</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    pseudo_dir = '../pseudo/'</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    etot_conv_thr = 1e-5</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    forc_conv_thr = 1e-4</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">/</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">&system</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    ibrav=2, celldm(1) =14, </span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    nat=2, ntyp=1,</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    ecutwfc=30</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">/</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">&electrons</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    conv_thr=1e-7</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">/</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">&ions</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">/</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">&cell</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">    cell_dofree='ibrav'</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">/</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">ATOMIC_SPECIES</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New""> Si 
28.0855 
Si.pbe-n-rrkjus_psl.1.0.0.UPF</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New""> </span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">ATOMIC_POSITIONS
(alat)</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New""> Si 0.00 0.00 0.00 0 0 0 </span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New""> Si 0.25 0.25 0.25 0 0 0</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">K_POINTS
(automatic)</span></p>

<p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New"">  4 4 4 0 0 0</span></p><p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt;font-family:Consolas"><span style="font-family:"Courier New""><br></span></p><p class="gmail-MsoPlainText" style="margin:0in 0in 0.0001pt;font-size:10.5pt"><font face="verdana, sans-serif">I get the following error in CRASH-</font></p><div><img src="cid:ii_k7stdyzm0" alt="image.png" width="452" height="154"><br></div></div></div>