<div dir="ltr"><div>That paper is 11 years old. There is an example of grid phonon calculation in the examples of the phonon code. Please have a look and try that one first (report if ti doesn't work)<br></div><div><br></div><div>Paolo<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 19, 2019 at 5:24 PM M.J. Hutcheon <<a href="mailto:mjh261@cam.ac.uk">mjh261@cam.ac.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div style="font-size:10pt">
<p>Dear Q.E community,</p>
<p>I have been attempting to parallelize an electron-phonon calculations using irreducible representations as described in</p>
<p><a href="http://users.ictp.it/~pub_off/lectures/lns024/10-giannozzi/10-giannozzi.pdf" target="_blank">http://users.ictp.it/~pub_off/lectures/lns024/10-giannozzi/10-giannozzi.pdf</a></p>
<p>However, my grid setup step with start_irr=0 and last_irr=0 produces no output and appears to stop early.</p>
<p>Input file:</p>
<p> </p>
<p>&INPUTPH<br>outdir='.',<br>trans=.true.,<br>ldisp=.true.,<br>nq1=1,<br>nq2=1,<br>nq3=1,<br>start_irr=0,<br>last_irr=0,<br>fildvscf='elph_vscf',<br>electron_phonon='interpolated',<br>/</p>
<p>Output file:</p>
<p>Normal up to printing of the q-points to be calculated, but then just stops abruptly before printing anything about the representations to be done. The last few lines look like:</p>
<p>Dynamical matrices for ( 1, 1, 1) uniform grid of q-points<br> ( 1 q-points):<br> N xq(1) xq(2) xq(3) <br> 1 0.000000000 0.000000000 0.000000000</p>
<p>Weirdly, I had it working for the same system not too long ago, but it is no longer producing the necessary files in _ph0/pwscf.phsave/ directory. I've tried a few compilers/versions of q-e (including the developer version)/combinations of input parameters with the same results.</p>
<p>Have I made a stupid mistake / has anyone had these problems before?</p>
<p>Thanks for your time,</p>
<p>Michael</p>
<div> </div>
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<a href="https://lists.quantum-espresso.org/mailman/listinfo/users" rel="noreferrer" target="_blank">https://lists.quantum-espresso.org/mailman/listinfo/users</a></blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>Phone +39-0432-558216, fax +39-0432-558222<br><br></div></div></div></div></div>