<div dir="ltr"><div class="gmail_default" style="font-size:large"><br clear="all"></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><font size="4"><span><span class="gmail_default" style="font-size:large">I could manage it by playing with ecutwfc and ecutfock.</span></span></font></div><div><font size="4"><span><span class="gmail_default" style="font-size:large"><br></span></span></font></div><div><font size="4"><span><span class="gmail_default" style="font-size:large">Regards</span></span></font></div><div><font size="4"><span><span class="gmail_default" style="font-size:large">Bhamu<br></span></span></font></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Aug 19, 2019 at 1:32 PM Dr. K. C. Bhamu <<a href="mailto:kcbhamu85@gmail.com">kcbhamu85@gmail.com</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"><div dir="ltr"><div style="font-size:large" class="gmail_default">Dear Experts,</div><div style="font-size:large" class="gmail_default">I am running GAUPBE calculations for a FCC binary scalar relativistic case with latest version of QE with mkl-2015 on a cluster with pseudo-dojo PPs and SG15 ONCV.</div><div style="font-size:large" class="gmail_default">K_POINTS {automatic}<br></div><div style="font-size:large" class="gmail_default"> X X X 0 0 0 (X=12, 15).<br></div><div style="font-size:large" class="gmail_default">taking converged value of ecutwfc (4meV). Beyond this criteria I am facing memory issue.</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">I am getting the dexx is negative error:</div><div style="font-size:large" class="gmail_default"> Error in routine electrons (1):<br> dexx is negative! Check that exxdiv_treatment is appropriate for the system, or ecutfock may be too low</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">I would like to mention two case where I encounter this error:</div><div style="font-size:large" class="gmail_default"> 1. <br></div><div style="font-size:large" class="gmail_default">k_POINTS</div><div style="font-size:large" class="gmail_default">12 12 12 0 0 0</div><div style="font-size:large" class="gmail_default">nqx=1,2,3,6 finished well but error was occurred with nqx=4.</div><div style="font-size:large" class="gmail_default"><div style="font-size:large" class="gmail_default">2. <br></div><div style="font-size:large" class="gmail_default">k_POINTS</div><div style="font-size:large" class="gmail_default">15 15 15 0 0 0</div><div style="font-size:large" class="gmail_default">nqx=1,5 finished well but error was occurred with nqx=3.</div></div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">I have looked over all the available threads on this forum and trying to overcome this error.</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">To dig into the available options I would like to ask about input variables of gaupbe.</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">1. exxdiv_treatment: as per pw.x input descriptions it should be none but the error says "exxdiv_treatment" ?</div><div style="font-size:large" class="gmail_default">Can we use other approach to be used for treating the Coulomb potential divergencies? I am afraid of using option other than none as the other options are suggested for supercells.</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">2. By default ecutvcut is 0.0. <br></div><div style="font-size:large" class="gmail_default">Can we vary this ecutvcut with gaupbe? if yes then what is the approximate range?</div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default"><br></div><div style="font-size:large" class="gmail_default">regards</div><div style="font-size:large" class="gmail_default">Bhamu<br></div><div style="font-size:large" class="gmail_default"><pre><br></pre></div></div>
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