<div dir="ltr">Indeed this is an issue with my QE build (I've just tried with a gcc build - and all went fine!), so please disregard my previous email.<div>Best,</div><div>MK</div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, 9 Oct 2018 at 10:52, Michal Krompiec <<a href="mailto:michal.krompiec@gmail.com">michal.krompiec@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr">Hello,<div>I'm struggling with SCF convergence of something that should be a simple calculation: InP (zincblende structure taken from a CIF). I tried ultra-soft pseudopotentials, PAW, changing the k-point grid, increasing ecutwfc and ecutrho, decreasing mixing_beta and every time the SCF energy is oscillating instead of converging. I would be grateful for any advice.</div><div>This is an example input file:</div><div><div>&CONTROL</div><div> calculation = "scf",</div><div> pseudo_dir = ".",</div><div> outdir = ".",</div><div> prefix = "InP",</div><div> verbosity='high'</div><div> restart_mode = "from_scratch"</div><div>/</div><div>&SYSTEM</div><div> input_dft = "pbe",</div><div> ibrav = 2,</div><div> nat = 2,</div><div> ntyp = 2,</div><div> ecutwfc = 80,</div><div> ecutrho = 800,</div><div> occupations = "fixed",</div><div> A=5.8687,</div><div><br></div><div><br></div><div>/</div><div>&ELECTRONS</div><div> electron_maxstep =1000,</div><div> diagonalization = "cg",</div><div> mixing_beta=0.2,</div><div> mixing_ndim=12,</div><div> mixing_mode="plain"</div><div>/</div><div><br></div><div><br></div><div>ATOMIC_SPECIES</div><div>In 49 In.pbe-dn-kjpaw_psl.1.0.0.UPF</div><div>P 15 P.pbe-n-kjpaw_psl.1.0.0.UPF</div><div><br></div><div>ATOMIC_POSITIONS {alat}</div><div>In 0.00000 0.00000 0.00000</div><div> P 0.25 0.25 0.25</div><div><br></div><div>K_POINTS {automatic}</div><div>9 9 9 0 0 0</div></div><div><br></div><div>Thanks in advance,</div><div><div style="color:rgb(0,0,0);font-family:Tahoma;font-size:13.3333px"><div style="font-size:13px"><div><p class="MsoNormal" style="margin-bottom:12pt"><span style="font-size:9pt;font-family:Helv,sans-serif">Michal</span></p><p class="MsoNormal" style="margin-bottom:12pt"><span style="font-size:9pt;font-family:Helv,sans-serif"><br></span></p><p class="MsoNormal" style="margin-bottom:12pt"><b><span style="font-size:9pt;font-family:Helv,sans-serif">Dr. Michal Krompiec</span></b></p><p class="MsoNormal"><span style="font-family:Helv,sans-serif;font-size:9pt">Adjunct Professor</span></p><p class="MsoNormal"><span style="font-size:12px;font-family:Helv,sans-serif">School of Chemistry, University of Southampton</span></p><p class="MsoNormal"><span style="font-family:Helv,sans-serif;font-size:12px">Highfield, Southampton SO17 1BJ, UK</span></p><div><span style="font-size:12px;font-family:Helv,sans-serif"><br></span></div><p class="MsoNormal"><span style="font-family:Helv,sans-serif;font-size:9pt">and</span></p><p class="MsoNormal"><span style="font-family:Helv,sans-serif;font-size:9pt">Head of Computational Modelling | </span><span style="font-family:Helv,sans-serif;font-size:9pt">Performance Materials | Early Research and Business Development </span></p><p class="MsoNormal"><span style="font-family:Helv,sans-serif;font-size:9pt">Merck </span></p></div></div></div><div style="color:rgb(0,0,0);font-family:"Times New Roman";font-size:16px"></div><br class="m_3146232904235821268gmail-Apple-interchange-newline"></div></div></div>
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